Posts Tagged ‘Physics’

India Cutting Evolution and Other important Scientific and Political Subjects from the Curriculum

June 6, 2023

‘The prestigious science journal, Nature, reported on 31st May 2023, that the Indian education authority is dropping several key scientific and political subjects from the education curriculum for pupils under 16. the magazine reported:

In India, children under 16 returning to school this month at the start of the school year will no longer be taught about evolution, the periodic table of elements or sources of energy.

The news that evolution would be cut from the curriculum for students aged 15–16 was widely reported last month, when thousands of people signed a petition in protest. But official guidance has revealed that a chapter on the periodic table will be cut, too, along with other foundational topics such as sources of energy and environmental sustainability. Younger learners will no longer be taught certain pollution- and climate-related topics, and there are cuts to biology, chemistry, geography, mathematics and physics subjects for older school students.

Overall, the changes affect some 134 million 11–18-year-olds in India’s schools. The extent of what has changed became clearer last month when the National Council of Educational Research and Training (NCERT) — the public body that develops the Indian school curriculum and textbooks — released textbooks for the new academic year that started in May.

Researchers, including those who study science education, are shocked. “Anybody who’s trying to teach biology without dealing with evolution is not teaching biology as we currently understand it,” says Jonathan Osborne, a science-education researcher at Stanford University in California. “It’s that fundamental to biology.” The periodic table explains how life’s building blocks combine to generate substances with vastly different properties, he adds, and “is one of the great intellectual achievements of chemists”.

Mythili Ramchand, a science-teacher trainer at the Tata Institute of Social Sciences in Mumbai, India, says that “everything related to water, air pollution, resource management has been removed. “I don’t see how conservation of water, and air [pollution], is not relevant for us. It’s all the more so currently,” she adds. A chapter on different sources of energy — from fossil fuels to renewables — has also been removed. “That’s a bit strange, quite honestly, given the relevance in today’s world,” says Osborne.’

Some material was cut from the curriculum last year in order to lighten it during the Covid pandemic. It was expected that it would be reinstated once the pandemic and the lockdown was over, but this hasn’t happened. Academics and educationalists appear perplexed by the decision, but it looks like it comes from the RSSS, the militant Hindu nationalist organisation linked to Modi’s BJP.

[Amitabh] Joshi says that the curriculum revision process has lacked transparency. But in the case of evolution, “more religious groups in India are beginning to take anti-evolution stances”, he says. Some members of the public also think that evolution lacks relevance outside academic institutions.

Aditya Mukherjee, a historian at Jawaharlal Nehru University in New Dehli, says that changes to the curriculum are being driven by Rashtriya Swayamsevak Sangh (RSS), a mass-membership volunteer organization that has close ties to India’s governing Bharatiya Janata Party. The RSS feels that Hinduism is under threat from India’s other religions and cultures.

“There is a movement away from rational thinking, against the enlightenment and Western ideas” in India, adds Sucheta Mahajan, a historian at Jawaharlal Nehru University who collaborates with Mukherjee on studies of RSS influence on school texts. Evolution conflicts with creation stories, adds Mukherjee. History is the main target, but “science is one of the victims”, she adds.’

See: https://www.nature.com/articles/d41586-023-01770-y

One of the other subjects cut from science teaching is a section ‘Why We Fall Ill’, which seems to me to be particularly wicked and dangerous. Everyone really needs to know about the causes of disease, regardless of their level of education or the country in which they live. This removal threatens to increase the incidence of disease in a country where many people lack access to medicine.

In an article from the previous day, 30 May, Nature reported the Indian education authority’s, NCERT’s, reasons for the changes

‘NCERT says that ‘rationalization’ is needed when content overlaps with material covered elsewhere in the curriculum, or when it considers content to be irrelevant. Moreover, India’s 2020 National Education Policy says that students need to become problem-solvers and critical thinkers, and it therefore advocates less memorization of content and more active learning.

NCERT also wants “a rootedness and pride in India, and its rich, diverse, ancient and modern culture and knowledge systems and traditions”. Some people interpret this as a motivation to remove the likes of Charles Darwin and Michael Faraday, and instead use the time to learn more about India’s precolonial history of science.’

But it comments

‘India is not the only postcolonial country grappling with the question of how to honour and recognize older or Indigenous forms of knowledge in its school curricula. New Zealand is trialling the teaching of Māori ‘ways of knowing’ — mātauranga Māori — in a selection of schools across the country. But it is not removing important scientific content to accommodate the new material, and for good reason.’

See: https://www.nature.com/articles/d41586-023-01750-2

It all reminds me of the furore back in the 1990s when Christian Creationists in Kansas banned evolution from being taught in their schools. The great comedian, the late Bill Hicks joked about it, saying ‘In many parts of our troubled world, people are crying ‘Revolution! Revolution’. In Kansas they’re shouting ‘Evolution! Evolution! We want our opposable thumbs’. There have been periodic concerns ever since about the teaching of evolution and Creationism in schools. Western scientists have been particularly worried about Creationism, or Creation Science, being taught as scientific fact. There was particularly controversy nearly two decades ago with the emergence of Intelligent Design, and the Discovery Institute. Intelligent Design accepts evolution, but considers that it has carried out by a God or other intelligent force that has actively intervened at specific points. One form of Intelligent Design, proposed by the cosmologist Fred Hoyle in his 1980s book, Evolution from Space, is that the creator may have been an extradimensional computer civilisation. For years discussions of Creationism and its supposed threat to science was chiefly confined to Christianity. There was some discussion of the rise of Islamic Creationism in Turkey, but from what I recall this was mostly confined to the internet. India at that time seemed not to be experiencing any similar concerns about evolution or other doctrines which may have challenged traditional religious teaching.

This looks very much like it’s going to damage India as an emerging global economic and technological force. Yes, the country has a millennia-old tradition of scientific and medical innovation, but the country has become a scientific powerhouse as well through embracing modern, western science, just as its neighbour China has done. I’ve been particularly struck by the country’s ambitious space programme, which has made some remarkable advances and has made India a space power. If these changes to its schools curriculum continue, I can see the tradition of scientific excellence that the country has done so much to build being severely handicapped.

I also note the similarity of its stance on the environment to various right-wing political lobby groups and think tanks to ban the teaching of environmentalism and climate change, and to make us all believe that the massive pollution of the environment by business isn’t happening and won’t cause permanent damage. Trump when he was in the White House passed legislation preventing the American environmental watchdog from publishing anything about climate change of the environment. This partly came from oil industry, whose own, astroturf climate organisations has a policy of buying up independent climate analysis laboratories and using them to turn out its own, anti-climate change propaganda.

Regarding the excision of material on politics, I’ve got the impression that India is trying to establish itself as the true home of democracy, looking back to its traditional village councils or panchayats. But there seems to be a more sinister purpose to the removal of chapters on democracy and diversity; political parties; and challenges to democracy, as well as a chapter on the industrial revolution for older students. It looks here like the BJP and its storm troopers are trying to stop India’s young people from acquiring the historical and political knowledge to understand how their country could be – or actually is – being taken towards authoritarianism and Fascism.

Vicious totalitarian governments of both left and right, from Hitler’s Germany to Stalin’s Russia, have all attacked and refashioned science, history and education as part of their programmes. Now it seems India, under the BJP, is also going down this path.

Mathematician Eric Weinstein Wonders If Aliens Have an FTL Drive Not Based on Einsteinian Physics

March 21, 2023

This one is more for the science and space nerds among the readers of this blog. This video is a short piece from Eric Weinstein’s appearance on the Joe Rogan show. Weinstein’s an American mathematician who’s seriously dissatisfied with the state of physics and cosmology at the moment. In a previous video he takes square aim at Quantum Gravity. This is an attempt to unify two very different theories – Einstein’s theory of relativity, which works extremely well on the macro level, but doesn’t extend to the quantum world, and quantum physics, which is the opposite. It works extremely well at the level of atomic particles, but doesn’t work at the level of people, planets, cars and the like. Weinstein’s complaint is that great minds have worked for over 70 years on Quantum Gravity without any success. However, because of the prestige of some of the great minds promoting the theory, like Ed Witten and the author Michio Kaku, people are still pursuing it and anyone who speaks against it is regarded as a crank. Weinstein has come up with his own theory, Geometric Unity, which posits there are 4 or 6 extra dimensions.

In this video he talks about Faster Than Light travel. He’s dismissive of the Alcubierre drive, which states that it may be possible to create a warp drive by warping space around the space ship. It sounds like he doesn’t believe it would work because the force of gravity is so weak. The Earth’s gravity barely warps space, for example. He believes that if aliens do have a space drive, it operates on a theory that has transcended Einstein. This would involve there being several dimensions of time. He describes how time might work if there are two or three dimensions of it, but then it becomes impossible for physicists at the moment to imagine what it would be like with more. He says that physicists imagine there being extra physical dimensions all the time, but the only physicist imagining what it would be like if there were two dimensions of time is Turkish Jewish fellow. And indeed only a little while ago there was a refereed scientific paper suggesting Faster Than Light travel could be possible if our universe did have two temporal dimensions.

This is advanced physics at the level where it starts to hurt the brain. Weinstein, however, appears to believe that UFOs are real, or that there is a genuine conspiracy around them. I also wondered if multiple temporal dimensions would explain John Keel’s Ultraterrestrials and some of the tales about the fairies. I’m think here of the tales in which someone stumbles or is abducted into fairyland, and when they finally emerge into the normal world centuries have passed although to them it has been only minutes or hours.

History Debunked Refutes Ethnomathematics/Rehumanizing Mathematics

September 8, 2020

This is another video from History Debunked. In it, youtuber and author Simon Webb attacks Ethnomatics, sometimes also called Rehumanizing Mathematics. This is a piece of modern pseudo-scholarship designed to help Black children tackle Maths. The idea is that Blacks perform poorly compared at Maths compared to other ethnic groups. This is held to be because Maths is the creation of White men, and this puts Blacks off studying and mastering it.

The solution has been to scrutinise African societies for their indigenous Maths, especially the Dogon of Mali. They have been chosen as the chief model for all this, as they possessed extremely advanced astronomical and mathematical knowledge. In the 1970s there was a book, The Sirius Mystery by Robert K.G. Temple, which claimed that they owed this advance knowledge to contact with space aliens. Apparently this claim was subsequently dropped 10 – 15 years later, and the claim made instead that they were just superlative astronomers and mathematicians themselves. But Dogon Maths is held to be different from White, western Maths because it’s spiritual. History Debunked then goes on to demonstrate the type of pseudo-scientific nonsense this has lead to by providing a link to an Ethnomathematics paper and reading out its conclusion. It’s the kind of pretentious verbiage the late, great Jazzman, Duke Ellington, said stunk up the place. It’s the kind of postmodern twaddle that Sokal and Bricmont exposed in their Intellectual Impostures. It’s deliberately designed to sound impressive without actually meaning anything. There’s a lot of talk about expanding cognitive horizons and possibilities, but History Debunked himself says he doesn’t understand a word of it. And neither, I guess, will most people. Because it doesn’t really mean anything. It’s just there to sound impressive and bamboozle the reader into thinking that somehow they’re thick because they don’t, while the fault is entirely the writers.

I think History Debunked is a man of the right, and certainly his commenters are Conservatives, some with extremely right-wing views. He’s produced a series of videos attacking the pseudo-history being pushed as Black History, and apparently Seattle in America is particularly involved in promoting this nonsense. But he expects it to come over here in a few years. Given the way Black History month has jumped the Atlantic, I think he’s right.

There’s been a particular emphasis on find ancient Black maths and science for some time I know. For a brief while I got on well with a Black studies group when I was a volunteer at the slavery archives in the former Empire and Commonwealth Museum. That was before I read their magazine and got so annoyed with it and its attitude to Whites that I sent them a whole load of material arguing to the contrary, and pointing out that in places like the Sudan, Blacks were being enslaved and oppressed not by White Europeans, but by the Arabs. I also sent them material about the poor Whites of South Africa, who also lived in grinding poverty thanks to Apartheid. This was stuff they really didn’t want to hear, and I was told that if I wanted to talk to them further, I should do so through someone else. They were also interested in finding examples of Black maths and science. I sent them photocopies and notes I’d made of various medieval Muslim mathematicians. These were Arabs and Persians, like al-Khwarizmi, who gave his name to the word algorithm, Omar Khayyam, best known in the west for his Rubayyat, but who was also a brilliant mathematician, al-Haytham, who invented the camera obscura in the 12th century and others, rather than Black. But they were grateful for what I sent them nonetheless, and I thanked me. This was before I blotted my copybook with them.

I’m reposting this piece because, although it comes from the political, it is correct. And you don’t have to be right-wing to recognise and attack this kind of postmodern rubbish. Sokal and Bricmont, the authors of the book I mentioned early attacking postmodernism, were both men of the left. Sokal was a physicist, who taught maths in Nicaragua under the left-wing Sandinista government. They wrote the book because they took seriously George Orwell’s dictum that writing about politics means writing clearly in language everyone can understand. And even if you believe that Black people do need particular help with maths because of issues of race and ethnicity, Ethnomathematics as it stands really doesn’t appear to be it. It just seems to be filling children’s heads with voguish nonsense, rather than real knowledge.

I also remember the wild claims made about the Dogon and their supposed contact with space aliens. Part of it came from the Dogon possessing astronomical knowledge well beyond their level of technology. They knew, for example, that Sirius has a companion star, invisible to the naked eye, Sirius B. They also knew that our solar system had nine planets, although that’s now been subsequently altered. According to the International Astronomical Association or Union or whatever, the solar system has eight planets. Pluto, previously a planet, has been downgraded to dwarf planet, because it’s the same size as some of the planetoids in the Kuiper Belt. Lynn Picknett and Clive Prince discuss this in one their books,The Stargate Conspiracy (London: Little, Brown & Company 1999), which claimed that the American intelligence agencies were secretly preparing a fake UFO landing in order to convince everyone that the space gods really had arrived, and set up a one-world dictatorship. This hasn’t happened, and I’ve seen the Fortean Times and other weird magazines trying to explain their book as a high-level hoax which people took too seriously. I don’t believe this, as they seemed very serious at the time. The Dogon believe that the first human ancestors, and some of their gods, came from the sky. Hence Temple’s claim that they were contacted by space aliens. Picknett and Prince, however, sided with sceptics like Carl Sagan. They argued instead ithat the Dogon owed it to a French priest, anthropologist or colonial administrator, I’ve forgotten which, who visited them in the 1920s and who was extremely interested in astronomy. This seems to me to be far more likely than that they either got it from space aliens or that they far better mathematicians and astronomers than they could have been at their level of development.

The Dogon are fascinating as their homes and villages are laid out to be microcosms of the male and female human body and the universe. The book African Mythology by Geoffrey Parrinder, London: Hamlyn 1967, describes the layout of a Dogon house thus:

The shape of the Dogon house is symbolical. The floor is like the earth and the flat roof like heaven. The vestibule is a man and the central room woman, with store rooms at her sides as arms. The hear at the end is her head. The four posts are the man and woman entwined in union. So the family house represents the unity of man and woman and God and the Earth. This is accompanied by the elevation and ground plan of a typical Dogon house. (p. 49).

There’s also this diagram of an idealised Dogon village:

The caption for the diagrame reads:

Like the house, the Dogon village represents human beings. The smithy is at the head like a hearth in a house. The family houses in the centre and millstones and village represent the sexes. Other altars are the feet. (p. 51).

Truly, a fascinating people and I have no problem anybody wanting to study them. But it should be in anthropology, ethnography or comparative religion, not maths.

But it struck me that if teachers and educators want to enthuse and inspire young minds with what maths Africans were studying, they could start with ancient Egypt and the great Muslim civilisations of the Sahara and north Africa, like Mali. Aminatta Forna in one of her programmes on these civilisations was shown an ancient astronomical text from the medieval library of one of these towns, which she was told showed that Muslims knew the Earth orbited the sun before Copernicus and Galileo. I doubt that very much. It looks like a form of a combined helio-and geocentric system, first proposed by the ancient Greeks, and then taken up by some medieval astronomers not just in Islam, but also in Christian Europe. In this system, all the other planets when round the Sun, which orbited the Earth. Close to the modern system, but not quite. But it showed that the Black citizens of that civilisation were in contact with the great currents of Muslim science, and that they would have had learnt and taught the same kind of Maths that was being investigated and researcher right across the Muslim world, from India to Morocco and further south to Mali. One of the Black educationalists would like to translate one of these books from Arabic, the learned language of Muslim civilisation, and use it as an example of the kind of maths that was also taught in Black Africa.

Or you could go right back to ancient Egypt. Mathematical texts from the Land of the Nile have also survived in the Moscow and Rhind mathematical papyri. These have various maths problems and their solution. For example, problem No. 7 of the Moscow papyrus is about various calculations for a triangle. This runs

Example of calculating a triangle.

If you are told: A triangle of 2 thousands-of-land, the bank of 2 of 2 1/2;

You are to double the area: result 40 (arurae). Take (it) 2 1/2 times; result [100. Take its square root, namely] 10. Evoke 1 from 2 1/2; what results is 2/5. Apply this to 10; result 4. It is 10 (khet) in length by 4 (khet) in breadth. From Henrietta Midonick, The Treasury of Mathematics: 1 (Harmondsworth: Pelican 1965) p. 71.

It’s amazing to think that the boys at the scribal school were being taught all this millennia ago. It gives you a real sense of connection with the ancient schoolkids reading it. You can imagine them, hunched over with their pen and ink, busily cudgeling their brains while the teacher prowls about them. The Babylonians were also renowned as the pioneers of early mathematics. They even uncovered a school when they excavated Ur of the Chaldees in the 1920s, complete with the maths and other texts the schoolboys – female education didn’t exist back then, but I’m willing to be corrected – were required to learn. As a schoolboy character in the Fast Show used to say: ‘Brilliant!’ You don’t need to burden modern African societies like the Dogon with spurious pseudo-history and pseudo-science, when the real historic achievements of ancient Egypt and medieval Africa are so impressive.

It struck me that even if you don’t use the original Egyptian maths texts to teach maths – which would be difficult, as their maths was slightly different. Their method of calculating the area of a field of four unequal sides yields far too high a figure, for example – you could nevertheless inspire children with similar problems. Perhaps you could do it with assistance of a child or two from the class. You could bring them out in front of everyone, give them and ancient Egyptian headdress, and then arranged the lesson so that they helped the teacher, acting as pharaoh, to solve it. Or else pharaoh showed them, his scribes, and thus the class. This is certainly the kind of thing that was done when I was a kid by the awesome Johnny Ball on the children’s maths and science programme, Think of a Number. And every week, as well as showing you a bit of maths and science, he also showed you a trick, which you could find out how to do by dropping him a line. It was the kind of children’s programme that the Beeb did very, very well. It’s a real pity that there no longer is an audience for children’s programmes and their funding has subsequently been cut.

Here’s History Debunked’s video attacking Ethnomathematics. He also attacks a piece of ancient baboon bone carved with notches, which he states has been claimed is an ancient prehistoric African calendar. He provides no evidence in this video to show that it wasn’t, and says its the subject of a later video. If this is the one I’m thinking of, then that is a claim that has been accepted by mainstream archaeologists and historians. See Ivor Grattan-Guinness, The Fontana History of the Mathematical Sciences (London: Fontana Press 1998) p. 24.

If you want to know more about ancient and medieval maths, and that of the world’s many indigenous cultures, see the book Astronomy before the Telescope, edited by Christopher Walker with an introduction by the man of the crumpled suit and monocle himself, Patrick Moore (London: British Museum Press 1998).

This has chapters on astronomy in Europe from prehistory to the Renaissance, but also on astronomy in ancient Egypt, Babylonia, India, Islam, China, Korea and Japan, North and South America, traditional astronomical knowledge in Africa and among Aboriginal Australians, Polynesia and the Maori. It can be a difficult read, as it explores some very technical aspects, but it is a brilliant work by experts in their respective fields.

Star Trek: Was Gene Roddenberry Influenced by Asimov’s ‘Space Ranger’ Novels

March 20, 2020

This is just a bit of SF fan speculation before I start writing about the really serious stuff. I’ve just finished reading Isaac Asimov’s Pirates of the Asteroids. First published in 1952, this is the second of five novels about David ‘Lucky’ Starr, Space Ranger. In  it, Starr goes after the Space Pirates, who killed his parents and left him to die when he was four. He tries to infiltrate their organisation by stowing away aboard a remote-controlled ship that’s deliberately sent into the asteroids to be attacked and boarded by the pirates. He’s captured, forced to fight for his life in a duel fought with the compressed air push guns NASA developed to help astronauts maneuver during spacewalks. After fighting off an attempt on his life by his opponent, Starr is taken by the pirates to the asteroid lair of a reclusive, elderly man, one of a number who have bought their own asteroids as retirement homes. The elderly man, Hansen, helps him to escape, and the pair fly back to Ceres to meet Starr’s old friends and mentors from the Science Academy. Starr and his diminutive Martian friend, Bigman, decide to return to the old hermit’s asteroid, despite it having disappeared from its predicted position according to Starr’s orbital calculations in the meantime. Searching for it, they find a pirate base. Starr is captured, his radio disabled, and literally catapulted into space to die and the pirates plan to attack his spaceship, left in the capable hands of Bigman. Starr and Bigman escape, travel back to Ceres, which they find has been attacked by the pirates in the meantime, and the hermit, Hansen, captured. Meanwhile Earth’s enemies, the Sirians, have taken over Jupiter’s moon, Ganymede. Starr reasons that the pirates are operating in cahoots with them to conquer the solar system, and that the pirates are taking Hansen there. He heads off in hot pursuit, seeking not just to stop the pirates and their leader before they reach Ganymede, but thereby also prevent a devastating war between Earth and Sirius.

In many ways, it’s typical of the kind of SF written at the time. It’s simple fun, aimed at a juvenile and adolescent readership. Instead of using real profanity, the characters swear ‘By space’ and shout ‘Galloping Galaxies’ when surprised or shocked. It also seems typical of some SF of its time in that it’s anti-war. The same attitude is in the SF fiction written by Captain W.E. Johns, the author of the classic ‘Biggles’ books. Johns wrote a series of novels, such as Kings of Space, Now to the Stars, about a lad, Rex, and his friends, including a scientist mentor, who make contact with the civilisation behind the UFOs. These are a race of friendly, humanoid aliens from Mars and the asteroid belt, who befriend our heroes. Nevertheless, there is also an evil villain, who has to be defeated by the heroes. It’s a very long time since I read them, but one thing a I do remember very clearly is the anti-war message expressed by one the characters. The scientist and the other Earthmen are discussing war and the urge for conquest. The scientist mentions how Alexander the Great cried when he reached the borders of India, because there were no more countries left to conquer. The characters agree that such megalomaniac warriors are responsible for all the needless carnage in human history, and we’d be better off without them. This is the voice of a generation that lived through and fought two World Wars and had seen the horror of real conflict. They weren’t pacifists by any means, but they hated war. It’s been said that the people least likely to start a war are those who’ve actually fought in one. I don’t know if Asimov ever did, but he had the same attitude of many of those, who had. It’s in marked contrast with the aggressive militarism of Heinlein and Starship Troopers, and the ‘chickenhawks’ in George W. Bush’s administration way back at the beginning of this century. Bush and his neocon advisers were very keen to start wars in the Middle East, despite having done everything they could to make sure they were well out of it. Bush famously dodged national service in Vietnam. As has the latest incumbent of the White House, Donald Trump.

But what I found interesting was the similarity of some the elements in the book with Star Trek. Roddenberry, Trek’s creator, was influenced by another SF book, The Voyage of the Space Beagle, as well as the ‘Hornblower’ novels. The latter is shown very clearly in Kirk’s character. But I suspect he was also influenced by Asimov as well in details like the Vulcan Science Council, subspace radio and the energy shields protecting Star Trek’s space ships. The Science Council seems to be the chief organ of government on Spock’s homeworld of Vulcan. Which makes sense, as Vulcans are coldly logical and rational, specialising in science, maths and philosophy. But in Asimov’s ‘Space Ranger’ books, Earth’s Science Council is also a vital organ of government, exercising police powers across the Terrestrial Empire somewhat parallel to the admiralty.

Communications across space are through sub-etheric radio. This recalls the sub-etha radio in Douglas Adams’ Hitchhiker’s Guide to the Galaxy, and shows that Adams probably read Asimov as well. In Star Trek, space communications are through ‘sub-space radio’. The idea of FTL communications isn’t unique to Asimov. In Blish’s Cities in Flight novels, the spacefaring cities communicate through normal radio and the Dirac telephone. The ansible, another FTL communication device, appears in Ursula K. Le Guine’s 1970s novel, The Dispossessed. What is striking here is the similarity of terms: ‘sub-etheric’ and ‘sub-space’. These are similar names to describe a very similar concept.

Star Trek’s space ships were also protected by force fields, termed shields, from micrometeorites and the ray weapons and torpedoes of attacking aliens, like Klingons, Romulans, Orion pirates and other riff-raff. The spacecraft in Asimov’s ‘Space Ranger’ books are protected by histeresis shields. Histeresis is a scientific term to describe the lag in materials of the effects of an electromagnetic field, if I recall my ‘O’ level Physics correctly. Roddenberry seems to have taken over this concept and imported it into Trek, dropping the ‘histeresis’ bit. And from Trek it entered Star Wars and Science Fiction generally. The idea is absent in the recent SF series, The Expanse. This is set in the 23rd century, when humanity has expanded into space. The Solar System is divided into three political powers/ groups: the Earth, now a united planet under the government of the United Nations, the Mars Congressional Republic, and the Belt, which is a UN protectorate. The Martians have gained their independence from Earth only after a war, while the Belt is seething with disaffection against UN/Martian control and exploitation. The political situation is thus teetering on the brink of system-wide war, breaking out into instances of active conflict. The ships don’t possess shields, so that bullets and projectiles launched by rail guns smash straight through them, and the crews have to dodge them and hope that when they are hit, it doesn’t strike anything vital. The Expanse is very much hard SF, and I suspect the absence of shields is not just the result of a desire to produce proper, scientifically plausible SF, but also a reaction to force fields, which have become something of an SF cliche.

But returning to Asimov’s ‘Space Ranger’ novels, it does seem to me that Roddenberry was influenced by them when creating Star Trek’s universe alongside other SF novels,  just as Adams may have been when he wrote Hitch-Hiker. Asimov’s best known for his ‘Robot’ and ‘Foundation’ novels, which have also been highly influential. But it looks like these other books also exercised a much less obvious, though equally pervasive influence through Roddenberry’s Trek.

Video Summary of BBC Horizon Programme ‘The Hunt for Gravity Control’

November 25, 2019

And now for something a little different. Trev, one of the great commenters on this blog, asked me a little while ago about anti-gravity in a comment on a piece I’d put up about UFOs. Way back in 2016 the BBC’s Horizon science programme had an edition, ‘The Hunt for Gravity Control’, which dealt with the hunt by British, American and Russian scientists to create an anti-gravity device. This began in Britain with the aerospace scientist Ron Evans at BAE, who started Project Greenglow. At the same time the Americans had a similar project, NASA’s Advanced Propulsion physics Programme, under the direction of Marc Millis. This aimed to discover alternative methods of space propulsion to rockets. A Russian scientist, Eugene Podkletnov, believed he had also discovered a method of creating anti-gravity through the use of superconductors and a spinning disc. However, this has not been replicated, and one of the scientists interviewed on the programme dismisses Podkletnov’s claims as ‘crap’. A Black physicist, who I don’t think is named in the clip, explains why scientists believe anti-gravity is impossible: it would need an object with negative mass, which instead of creating a kind of hole in spacetime would produce a type of mound around it instead.

There has, however, been a breakthrough of sorts. At the end, Dr. Evans is shown a device which uses quantum physics to detect bodies as small as that of a human through the tiny gravitational attraction they cause, at a distance of a meter. This gives Evans hope that one day, humans may be able to master gravity.

The full documentary’s about 50 minutes or so long. It was repeated a few months ago on BBC 4, and I think it might be available on BBC iplayer. The narrator’s Peter Capaldi, who was the last Dr. Who before Jodie Whitaker took over.

Richard Dawkins Promoting Atheism at the Cheltenham Festival of Literature

October 7, 2019

This week is the Cheltenham festival of literature. It’s an annual event when novelists, poets, illustrators and increasingly TV and radio personalities descend on the town to talk about and try to sell the books they’ve had published. There can be, and often are, some great speakers discussing their work. I used to go to it regularly in the past, but went off it after a few years. Some of the people turn up, year in, year out, and there are only so many times you can see them without getting tired of it.

Dawkins, Atheism and Philosophical Positivism

One of the regular speakers at the Festival is the zoologist, science writer and atheist polemicist, Richard Dawkins. The author of Climbing Mount Improbable, The River Out Of Eden, The Blind Watchmaker and so on is appearing in Cheltenham to promote his latest book, Outgrowing God: A Beginner’s Guide. It sounds like a kind of successor to his earlier anti-religious work, The God Delusion. According to the accompanying pamphlet for the festival, he’s going to be talking to an interviewer about why we should all stop believing in God. There’s no doubt Dawkins deserves his platform at the Festival as much as any other writer. He’s a popular media personality, and writes well. However, his knowledge of philosophy, theology and the history of science, which forms the basis for his attacks on Christianity, is extremely low, and defenders of religion, and even other scientists and historians, who are just interested in defending their particular disciplines from factual mistakes and misinterpretations, have shot great holes in them.

Dawkins is, simply put, a kind of naive Positivist. Positivism was the 19th century philosophy, founded by Auguste Comte, that society moved through a series of three stages in its development. The first stage was the theological, when the dominant ideology was religion. Then came the philosophical stage, before the process ended with science. Religion was a thing of the past, and science would take over its role of explaining the universe and guiding human thought and society. Comte dreamed of the emergence of a ‘religion of humanity’, with its own priesthood and rituals, which would use sociology to lead humanity. Dawkins doesn’t quite go that far, but he does believe that religion and science – and specifically Darwinism – are in conflict, and that the former should give way to the latter. And he’s not alone. I heard that a few years ago, Alice Robert, the forensic archaeologist and science presenter, gave a speech on the same subject at the Cheltenham Festival of Science when she was its guest director, or curator, or whatever they term it. A friend of mine was less than impressed with her talk and the lack of understanding she had of religion. He tweeted ‘This is a girl who thinks she is intelligent.’

War of Science and Religion a Myth

No, or very few historians of science, actually believe that there’s a war between the two. There have been periods of tension, but the idea of a war comes from three 19th century writers. And it’s based on and cites a number of myths. One of these is the idea that the Church was uniformly hostile to science, and prevented any kind of scientific research and development until the Renaissance and the rediscovery of ancient Roman and Greek texts. It’s a myth I learnt at school, and it’s still told as fact in many popular textbooks. But other historians have pointed out that the Middle Ages was also a period of scientific investigation and development, particularly following the influence of medieval Islamic science and the ancient Greek and Roman texts they had preserved, translated, commented on and improved. Whole books have been written about medieval science, such as Jean Gimpel’s The Medieval Machine, and James Hannam’s God’s Philosophers. Hannam is a physicist, who did a doctorate in examining the development of medieval science, showing that, far from retarding or suppressing it, medieval churchmen were intensely interested in it and were active in its research. Medieval science was based very much on Aristotle, but they were well aware of some of the flaws in his natural philosophy, and attempted to modify it in order to make it conform to observed reality. The Humanists of the Renaissance, rather than bringing in freedom of thought and scientific innovation, were actually a threat. They wanted to strip philosophy and literature of its medieval modifications to make it correspond exactly with the ancients’ original views. Which would have meant actually destroying the considerable advances which had been made. Rather than believe that renaissance science was a complete replacement of medieval science, scholars like Hannam show that it was solidly based on the work of their medieval predecessors.

Christian Theology and the Scientific Revolution

The scientific revolution of the 17th century in England also has roots in Christian philosophy and theology. Historians now argue that the Royal Society was the work of Anglican Broadchurchmen, who believed that God had created a rational universe amenable to human reason, and who sought to end the conflict between the different Christian sects through uniting them in the common investigation of God’s creation. See, for example, R. Hooykaas, Religion and the Rise of Modern Science (Edinburgh: Scottish Academic Press 1972).

Christian Monotheism and the Unity of Physical Law

It is also Christian monotheist theology that provides one of the fundamental assumptions behind science. Modern science is founded on the belief that the laws of nature amount to a single, non-contradictory whole. That’s the idea behind the ‘theory of everything’, or Grand Unified Theory everyone was talking about back in the 1990s. But this idea goes back to St. Thomas Aquinas in the 13th century. Aquinas said that we must believe that the laws of nature are one, because God is one.  It’s the assumption, founded on Christian theology, the makes science possible.

Atheist Reductionism also a Danger

When The God Delusion Came Out, it was met by a series of books attacking its errors, some of them with titles like The Dawkins Delusion. The philosopher Mary Midgley has also attacked the idea that science can act as a replacement for religion in her books Evolution as a Religion and The Myths We Live By. On page 58 of the latter she attacks the immense damage to humanity atheist reductionism also poses. She writes

Both reductive materialism and reductive idealism have converged to suggest that reductivism is primarily a moral campaign against Christianity. This is a dangerous mistake. Obsession with the churches has distracted attention from reduction employed against notions of human individuality, which is now a much more serious threat. It has also made moral problems look far simplar than they actually are. Indeed, some hopeful humanist reducers still tend to imply that, once Christian structures are cleared away, life in general will be quite all right and philosophy will present no further problems.

In their own times, these anti-clerical reductive campaigns have often been useful. But circumstances change. New menaces, worse than the one that obsesses us, are always appearing, so that what looked like a universal cure for vice and folly becomes simply irrelevant. In politics, twentieth-century atheistical states are not an encouraging omen for the simple secularistic approach to reform. it turns out that the evils that have infested religion are not confined to it, but are ones that can accompany any successful human institution. Nor is it even clear that religion itself is something that the human race either can or should be cured of.

Darwin Uninterested in Atheist Campaigning

Later in the book she describes how the Marxist Edward Aveling was disappointed when he tried to get Darwin to join him in a campaign to get the atheist, Bradlaugh, to take his seat as a duly elected MP. At the time, atheists were barred from public office by law. Aveling was impressed by Darwin’s work on evolution, which he believed supported atheism. Darwin was an agnostic, and later in life lost belief in God completely due to the trauma of losing a daughter and the problem of suffering in nature. But Darwin simply wasn’t interested in joining Aveling’s campaign. When Aveling asked him what he was now studying, hoping to hear about another earth-shaking discovery that would disprove religion, Darwin simply replied ‘Earthworms’. The great biologist was fascinated by them. It surprised and shocked Aveling, who hadn’t grasped that Darwin was simply interested in studying creatures for their own sake.

Evolutionists on Evolution Not Necessarily Supporting Atheism

Other evolutionary biologists also concluded that evolution has nothing to say about God, one way or another. Stephen Jay Gould stated that he believed that Darwinism only hinted at atheism, not that it proved it. Charles Darwin’s grandfather, Erasmus Darwin, who published his own theory of evolution in Zoonomia in 1801, believed on the other hand that the development of creatures from more primitive forebears made the existence of God ‘mathematically certain’.

Frank H.T. Rhodes of the University of Michigan wrote in his book Evolution (New York: Golden Press 1974) on its implications the following, denying that it had any for religion, politics or economics.

Evolution, like any other natural process or scientific theory, is theologically neutral. it describes mechanisms, but not meaning. it is based upon the recognition of order but incorporates no conclusion concerning the origin of that order as either purposeful or purposeless.

Although evolution involves the interpretation of natural events by natural processes, it neither assumes nor provides particular conclusions concerning the ultimate sources or the significance of materials, events or processes.

Evolution provides no obvious conclusions concerning political or economic systems. Evolution no more supports evolutionary politics (whatever they might be) than does the Second Law of Thermodynamics support political disorder or economic chaos. 

(Page 152).

Conclusion

I realise that the book’s nearly 50 years old, and that since that time some scientists have worked extremely hard to show the opposite – that evolution support atheism. But I’ve no doubt other scientists, people most of us have never heard of, believe the opposite. Way back in 1909 or so there was a poll of scientists to show their religious beliefs. The numbers of atheists and people of faith was roughly equal, and 11 per cent of the scientists polled said that they were extremely religious. When the poll was repeated in the 1990s, the pollsters were surprised to find that the proportion of scientists who were still extremely religious had not changed.

Despite what Dawkins tells you, atheism is not necessarily supported by science, and does not disprove it. Other views of the universe, its origin and meaning are available and still valid.

Time Travel Tale of Scientists Warning of Ecological Collapse: Gregory Benford’s ‘Timescape’

May 10, 2019

Gregory Benford, Timescape (London: Victor Gollancz 1980).

Julian, one of the great commenters on this blog, has asked me to do a review of Gregory Benford’s time machine book, Timescape. I read it a few years ago, having bought the 1996 edition, over a decade and a half after it was first published. It is just a bit dated now in its prediction of life in 1998, but still well-worth reading if you’re into physics and hard SF.

Benford, the ‘Galactic Centre’ Novels and Timescape

Gregory Benford is an American astronomer and hard SF writer. He’s probably best known for his ‘Galactic Centre’ series of novels. Set thousands of years in the future, this is about the last remnants of humanity battling for survival against a ruthless and almost overwhelmingly superior machine civilisation, the Mechs, at the centre of the Galaxy. Hard SF is the type of science fiction that tries as far as possible to keep to established scientific rules. Such as, for example, the inviolability of the rule of Relativity, so that there are no Faster Than Light drives taking humans to the stars in a matter of hours, days or months rather than years. But that doesn’t mean ruling out other scientific advances, like time travel. Several of the ‘Galactic Centre’ novels are set in an artificial environment within the Black Hole at the centre of our Galaxy, where careful engineering by alien creatures formed of pure magnetism have merged two Black Holes to form an artificial environment of warped space time, within which humans and organic aliens are able to seek sanctuary from the Mechs. The curvature of spacetime and stress cracks within it in this environment allow the inhabitants to travel backwards and forwards in time. One of the novels features the adventures of a modern human family, who are forced to flee forward in time as the Mechs invade, almost to the end of time itself.

Brief Synopsis

Timescape doesn’t go that far, and is very firmly set in the recent past, and near future according to the time it was written. It’s the tale of two scientists and their friends, Gordon Bernstein and his fellows at CalTech in 1963, and Gregory Markham, an American scientist and his friend Markham, at Cambridge Uni in 1998. Bernstein is a young graduate student, who detects strange signals from an experiment he and his fellows are running, signals that he gradually begins to realize cannot be explained as just random noise or the product of background radiation. In 1998 Markham and Renfrew are working on ways to generate tachyons, faster than light subatomic particles that will travel back in time through bombarding iridium with high energy particles. They hope that by creating such particles, they may be able to use them to send a warning to the past.

The Earth in this very near future is dying. The ecology is collapsing through a deadly bacteriological bloom that destroys vegetable and animal life. The result is global famine, poverty and social unrest, with food rationing and bands of hostile, violent beggars moving across England. Markham and Renfrew hope they can send a message to the past detailing how the disease can be fought and eradicated in order to save civilisation by preventing the catastrophe occurring in the first place.

Time Travelling Subatomic Particles from Space

The idea of using subatomic particles and quantum physics to contact the past is highly speculative, of course, but not unreasonable. Some interpretations of quantum physics suggest that information is able to move backwards through time, so that events in the future are able to determine the results of certain experiments, for example. There was also speculation in the 1990s that some subatomic particles reaching Earth from despite might be tachyons in origin. I can’t quite remember whether these were a type of neutrino or meson, but the theory was that they were produced by high energy events in space, such as supernovas. This produced tachyons, which traveled backwards in time until they decayed to become neutrinos or mesons or whatever, which were then able to be detected by scientists.

The Connecticutt College Professor’s Time Machine

Also in the 1990s came a plan by a Black professor at Connecticutt Community college to build a real, working time machine. This wouldn’t be able to transport people, just other subatomic particles back into the past. The idea was to create an Einstein-Rosen Condensate of iridium ions. An Einstein-Rosen Condensate is a strange state of matter where a plasma – an ionised gas is supercooled so that its component particles behave as a single particle. This plasma was to be whirled around in a chamber mimicking the spin of stars. Stars are so massive that as they spin, they pull the fabric of space time itself around after them. The effect has been observed around the Sun, providing confirmation of Einstein’s Theory of Relativity. It has been suggested that this effect could be used in the case of extremely massive objects, like Black Holes, to travel back in time. You simply enter the region of space being dragged around by the Black Hole, and then travel in the opposite direction to the local movement of spacetime. This should make you go back in time, it is suggested, and so you should be able to leave that area of space some time in the past, before you entered it. The professors plan worked along similar lines. Electrons would be shot into the chamber in the opposite direction to the circulation of the condensate. This should allow them to travel back into the past. If the scientists running the experiment found a larger number of electrons in the condensate than normal or otherwise explained, before they had started shooting them into it, then it would mean that the electrons had traveled there from the future. Time travel, or at least that possibility of communication between past and future, would be possible.

This obviously got very many people very excited. H.G. Wells’ grandson, who directed the ’90s version of his grand-dad’s classic, The Time Machine, appeared in a documentary telling us that the age of time travel was almost upon us. The experiment was due to be run aboard one of the space shuttles, but I think it must have been cancelled when one exploded, thus grounding the fleet and finally endings its use.

Time and the Weird World of Quantum Physics

Benford warns in his acknowledgements that

Many scientific elements in this novel are true. Others are speculative, and thus may well prove false. My aim has been to illuminate some outstanding philosophical difficulties in physics. If the reader emerges with the conviction that time represents are fundamental riddle in modern physics, this book will have served its purpose.

Which must be one of the rare occasions when a scientist writes a book to show how mysterious and incomprehensible a scientific phenomenon is, rather than how it can be grasped and understood. This famously applies to quantum physics. As one prominent scientist said of this subject, you don’t understand it, you just get used it.

Science and Society in the ’60s and ’90s

As you’d expect, there’s a lot of physics in the book, though none of its so hard that only physics graduates, let alone the late Stephen Hawking, would be the only people that understand it. And the book does an excellent job of showing what it must have been like doing physics at an advanced level in the early 1960s and the beginning of the 1980s. Gordon Bernstein, the hero of the early years, is a New York Jew, whose girlfriend, Marjorie, is a Conservative gentile. As his investigations proceed, he first believes that the signals are messages from space before coming to understand they’re from the future instead. He faces scepticism and opposition from his colleagues and academic supervisors, and risks being failed and his academic career and research terminated. as he goes on and his theories become public, he suffers from the attentions of the press and a procession of cranks, who traipse through his office door offering their own weird theories. I think this is a common experience to many astronomers and cosmologists. I can remember reading a comment by one such scientist that hardly a week went by without him receiving in the mail letters from people explaining their ‘theory of the universe’. At the same time, Bernstein’s relationship with his girlfriend also comes under pressure. His family don’t approve, and would like him to marry a nice Jewish girl instead. There are also political disagreements. Penny and her friends fully support the Vietnam War, views that aren’t shared by the liberal Bernstein. But in a twist, it’s Penny who understands that the waiters at their favourite restaurant are gay, is comfortable with that fact.

Back in Blighty in 1998, Markham’s and Renfrew’s backgrounds are solidly middle class. This is still a world where women were expected to stay home and cook, and the aristocracy still wields power and influence. A society in which entitled public school boys shout their food and alcohol choices in the local pub in Latin. It’s a world in which Markham is an outsider, and resents the privilege and condescension of the upper class Brits among which he moves.

Timescape and ’70s Fears of the End of Civilisation

Like much near-future SF, the book’s now dated. 1998 is now twenty years ago, and fortunately civilisation has not collapsed. Not yet. The book was partly a product of the sense of crisis in the 1970s, when many people really did fear the end of civilisation through industrial and social unrest and ecological collapse. It was predicted that overpopulation would result in mass famine, while the resources would run out and the Earth itself become uninhabitable through massive pollution. Fortunately, this hasn’t happened. Not yet. But there is still a real danger of global civilisation collapsing through irreversible ecological damage from climate change and pollution, and algal blooms are poisoning the water in some parts of the world. Despite it’s age, the book thus remains acutely relevant.

Social Change and the Rise of Domestic Computers

In other respects, the book as a prediction of the future hasn’t worn quite as well. The advance of feminism in the 1980s and ’90s meant that traditional gender roles were breaking down as women sought careers outside the home. By 1998 there was the expectation that both partners in a relationship would be working, and the old domestic arrangement in which women looked after children and the home and were supported by their husbands was seen as anachronistic. At the same time, he also doesn’t predict the advances in information technology that has produced the home and personal computers or mobile phones. There is, however, a machine called the Sek, which is a type of answerphone and database, if I recall correctly.

Conclusion

These differences between the book’s expectation of what the ’90s would be like and the reality actually don’t make much difference to the enjoyment of the story. Science Fiction tends not to be very good at predicting the future. If it was, then humanoid robots with a comparable level of intelligence and genuine consciousness, like Star Wars’ C3PO, would be in every home and we would already have colonies on the Moon, Mars and Earth orbit. We don’t have any of that. But we do have personal computers, the internet and mobile phones, as well as a variety of industrial machines, which weren’t predicted. Many SF novels still remain worth reading even though their predictions of the future, or the contemporary present in which they were set, are dated. These include such classics as those of H.G. Wells’, Jules Verne, John Wyndham and so on. What matters in the story and the writer’s ability to create a convincing, fascinating world, which Timescape does.

While some of its details are inaccurate, this is still a readable, gripping story with a solid base in plausible science, and whose warning about environmental decline is, horrendously, just as relevant now as it was when it was first published in 1980.

 

Radio Programmes Next Week on Homelessness, Conspiracy Theories and Aliens

February 6, 2019

Looking through next week’s Radio Times for 9th-15th February 2019 I found a number of programmes which might be of interest to some people following this blog.

On Monday, 11th February at 8.00 pm on Radio 4 there’s Beyond Tara and George, about rough sleepers. The blurb for this programme reads

Last year there were nearly 600 deaths on the streets of the UK. In this follow-up to last summer’s Radio 4 series on east London rough sleepers Tara and George, presenter Audrey Gilan catches up with the pair to ask what it would take to prevent the unnecessary deaths of homeless people. (p. 137).

Then a half hour later at 8.30 on the same channel, Analysis covers conspiracy theories. The Radio Times says of this

Professor James Tilley explores the current spate of political conspiracy theories, and examines what belief in them tells us about voters and politicians.

The next day, Tuesday 12th February, at 1.30 pm on the Beeb’s World Service there’s Documentary: So Where Are the Aliens?, which the Radio Times describes thus

Space, to quote the late, great Douglas Adams, is mindboggling big. So huge, in fact, that the probability of there being civilized life elsewhere in the universe is almost a mathematical certainty. This begs an obvious question, to which Seth Shostak – chief astronomer of the Seti institute (Search for Extraterrestrial Intelligence) has devoted his career. He speaks with fellow scientists Frank Drake and Jill Tarter about their pioneering work chasing extraterrestrial radio signals as well as the new listening and light-based techniques designed to open up the sky like never before. Last year’s tantalizing fly-by of the mysterious cigar-shaped Oumuamua has revived interest in this topic, although in 2019 ET could be forgiven for giving Earth a wide berth. (p. 138).

Regarding the programme on preventing the homeless dying, one way to stop it would be to fix the welfare state so that poor and vulnerable people didn’t become homeless in the first place. Giving more funding and expanding the number of homeless shelters so that they were safe and able to provide accommodation for rough sleepers would also be very good. As would support schemes for those with drug, alcohol or mental health problems. And as Mike’s pointed out in his reports on attacks on the homeless, it would also be very good idea for the right-wing media to stop portraying the homeless, as well as the disabled, the unemployed and those on benefits generally all as scroungers committing welfare fraud and generally demonizing them. But as the Tory party, the Scum, Express and Fail all depend on this for votes and sales, it isn’t going to happen.

The prgramme on conspiracy theories could be interesting, but I doubt it will actually face up to the fact that some conspiracies are real. Not the malign and bogus myths about a Jewish plot to destroy the White race, or that the business and political elite are really evil Reptoid aliens, a la David Icke, or have made a demonic pact with grey aliens from Zeti Reticuli to allow them to abduct us for experimentation while giving them the benefits of alien technology. Or similar myths about the Illuminati, Freemasons or Satanists.

The real conspiracies that exist are about the manipulation of politics by the world’s secret services, and secret big business think tanks and right-wing pressure groups. Such as the various front organisations set up by the CIA during the Cold War, the smears concocted by MI5 during the 1970s presenting Harold Wilson as a KGB agent, and the contemporary smears by the Integrity Initiative, funded by the Tory government, claiming that Corbyn and other left-wing figures across Europe and America were agents of Putin. And, of course, the real conspiracy by Shai Masot at the Israeli embassy to have Tory cabinet ministers, who didn’t support Israel, removed from government. As well as the embassy’s role in making fake accusations of anti-Semitism against entirely decent people in the Labour party.

But I’ve no doubt that the Beeb will shy well away from these real conspiracies, not least because of Britain’s sordid role in the West’s history of regime change in Developing nations that dared to defy the Americans and ourselves. The Beeb has put on similar programmes before, and the person being interviewed or presenting the argument was former Independent journo David Aaronovitch. And his line has always been to ignore these real conspiracies, and concentrate on all the mythical rubbish, which he presents as typical of the conspiracy milieu as a whole. Which you’d expect from an establishment broadcaster, that now seems to see itself very much as the propaganda arm of the Conservative British state.

Moving on to the programme on SETI, Shostak, Tarter and Drake are veterans not only of the search for intelligent alien life, but also of programmes and documentaries on the search. Drake was the creator of the now famous equation which bears his name, which is supposed to tell you how many alien civilisations we can expect to exist in the galaxy. He was one of the brains behind Project Ozma, alias ‘Project Little Green Men’ in the 1960s to listen for alien signals from two nearby, roughly sun-like stars, Tau Ceti and Epsilon Eridani. Which found zilch, unfortunately. Shostak and Tarter were two of the leaders of the new wave of SETI researchers in the 1990s, and Shostak wrote a book about the possibility of alien life and what they would possibly be like. This concluded that they wouldn’t be anything like us, ruling out aliens like Mr Spock in Star Trek. In size they would probably be the same as Labradors.

It’s been known now that the Galaxy is old enough and big enough, with the right kind of stars and an increasing multitude of known planets, some of them possibly suitable for life, for alien civilisations to have emerged several times. And if they only advanced at the speed of light, they should be here by now. But they’re not. So far we’ve detected no sign of them. Or no absolutely indisputable signs. So where are they? This problem is called the Fermi paradox after the Italian-American physicist, Enrico Fermi. Suggested answers are that life, or perhaps just intelligent life, is extremely rare in the universe. Space travel may be extremely difficult. Aliens may exist, but they may be completely uninterested in talking to us. In this respect, we may even be a ‘protected species’ considered too fragile at our current level of civilization for contact with the rest of the Galaxy. Or perhaps there really are predatory alien intelligences and civilisations out there, who automatically attack any culture naïve and trusting enough to announce their presence. In which case, all the alien civilisations out there are paranoid and keeping their heads well down. One of SF writer even wrote a collection of short stories, each of which gave one solution to the Paradox.

Physics Textbook on Cosmology and Gravitation

March 15, 2018

M.V. Berry, Principles of Cosmology and Gravitation (Bristol: Institute of Physics Publishing 1989).

Yesterday came the news of the death of the great British physicist and cosmologist, Stephen Hawking at the age of 76. Hawking had suffered for most of his adult life from motor neurone disease, since he was diagnosed with it in his early 20s. He was given only three years to live, but instead managed to live out a very full lifespan working on his theories of the origin of the universe and Black Holes. He was a great ambassador for science. His book, A Brief History of Time, was a bestseller when it appeared in 1980s, although he admitted that it was probably a book few finished. And he showed that it was still possible for a disabled person to do cutting edge research, provided they had the necessary technical and medical support. In his case, it was his wheelchair and the machine that allowed him to speak, first of all by keying in the words, then by twitching just a single muscle. Some of the praise seemed a bit too fulsome to me. Like when they started saying that he was the greatest scientist since Newton and Einstein. I don’t think he was. And Hawking on his own didn’t unlock the secrets of universe or Black Holes, as the Beeb’s presenters also claimed. As for his great sense of humour, well, it existed, as his appearance on shows like The Simpsons demonstrated, but my memory of it is marred by him turning up with the TV critic, Victor Lewis Smith, telling fart jokes and laughing on the 1990s series, Inside Victor Lewis Smith. But it really was inspiring to see how he was a great hero to the ‘A’ level students at a science fair yesterday, and how he had inspired them to become interested in science.

One of the complaints Richard Dawkins has made about popular science programmes is that they’re too ‘dumbed-down’. He points out that they have to have lots of explosions, and they mustn’t include equations, in case that scares people off. There’s a lot with which I don’t agree with Dawkins. I’m not an atheist, and have argued on this blog against him and the other militant atheists. But he is right here. Scientists writing the popular science books have said that they’ve been told by their publishers to leave equations out, because every equation in a book damages sales.

I think this is the wrong attitude to have. It’s why I’ve put up this piece about the above book by M.V. Berry. It’s an undergraduate physics textbook, which does contain the fundamental mathematical equations for this area of physics. Its contents include

1. Introduction

2. Cosmography
2.1 What the universe contains
2.2 The cosmic distance hierarchy and the determination of galactic densities
2.2.1 Parallax
2.2.2 Distance from velocity measurements
2.2.3 Distance from apparent luminosity
2.2.4 Weighing galaxies
2.3 The red shift and the expansion of the universe.

3. Physical base of general relativity
3.1 The need for relativistic ideas and a theory of gravitation.
3.2 Difficulties with Newtonian mechanics: gravity
3.3. Difficulties with Newtonian mechanics: inertial frames and absolute space.
3.4 Inadequacy of special relativity.
3.5 Mach’s principle, and gravitational waves.
3.6 Einstein’s principle of equivalence.

4 Curved spacetime and the physical mathematics of general relativity.
4.1 Particle Paths and the separation between events
4.2 Geodesics
4.3 Curved spaces
4.4 Curvature and gravitation.

5 General relativity near massive objects
5.1 Spacetime near an isolated mass.
5.2 Around the world with clocks.
5.3 Precession of the perihelion of Mercury
5.4 Deflection of light
5.5 Radar echoes from planets
5.6 Black Holes

6 Cosmic Kinematics
6.1 Spacetime for the smoothed-out universe
6.2 Red shifts and horizons
6.3 Apparent luminosity
6.4 Galactic densities and the darkness of the night sky.
6.5 Number counts

7 Cosmic dynamics
7.1 Gravitation and the cosmic fluid
7.2 Histories of model universes
7.3 The steady state theory
7.4 Cosmologies in which the strength of gravity varies

8 In the beginning
8.1 Cosmic black-body radiation.
8.2 Condensation of galaxies
8.3 Ylem.

Appendix A: Labelling astronomical objects
Appendix B: Theorema Egregium
Problems
Solutions to odd-numbered problems
Useful numbers.

there’s also a bibliography and index.

I’m not claiming to understand the equations. I struggled at both my ‘O’ level maths and physics, and what I know about science and astronomy I learned mostly through popular science books. But in the mid-1990s I wanted to see at least some of the equations scientists used in their explorations and modelling of the universe. One of the popular science books I was reading said at the time that this book was at the level that people with ‘A’ level maths could understand, and this didn’t seem quite so much a jump from my basic maths skills. So I ordered it. I’m afraid I can’t say that I’ve read it properly, despite the fact that I keep meaning to. Some of the equations are just too much for me, but I can follow the explanations in the text. I’m putting this notice of the book up here, in case there are any budding Stephen or Stephanie Hawkingses out there, who want to go a bit further than the pop-sci explanations, and see for themselves what the maths behind it all is like.

The Beeb also said in their eulogy for the great man, that Hawking hoped that the people reading his A Brief History of Time would come away with one point, even if they hadn’t finished it: that the universe is governed by rational law. Actually, this ideas isn’t unique to Hawking by a very, very long way. It actually comes from the Middle Ages, and is the assumption that makes science possible. Hawking was an agnostic, I believe, and many scientists are atheists. But this assumption that the universe is governed by rational laws ultimately comes from Christian theology. The founds of modern science in the Renaissance pointed to the passages in the Bible, in which God’s Wisdom creates the universes and establishes the boundaries and courses of natural phenomena, like the tides and stars. And the anarchist of science, Feuerabend, pointed out that the assumption that the laws of the universe all form a consistent whole come from Christian doctrine, quoting the 13th century theologian and philosopher, Thomas Aquinas: ‘We must believe that the laws of the universe are one, because God is one.’

Hawking has passed away, but it’s clear that he has inspired many more people to become interested in this rather arcane branch of the sciences. I hope this continues, despite the Tories’ attack on education and science and research for its own sake.

Stephen Hawking to Play The Book in New Series of the Hitch-Hiker’s Guide to the Galaxy

February 18, 2018

The I newspaper yesterday reported that the physicist and cosmologist, Stephen Hawking, is set to play the Book in a new radio series of the Hitch-Hiker’s Guide to the Galaxy. Entitled ‘The Hitch-Hiker’s Guide to the Galaxy: Hexagonal Edition’ the series will commemorate the original show on Radio 4 back in 1978, featuring the original cast.

I loved the original series of the Hitch-Hiker’s Guide to the Galaxy, and the first two books based on the show, the Hitch-Hiker’s Guide to the Galaxy and The Restaurant at the End of the Universe. However, I lost interest in it after the third book. I tried reading the fourth, only to give up. I think by that time Douglas Adams himself was growing tired of writing them. I’ve heard someone say on an interview that he was only lured back to write his last Hitch-Hiker book by the publisher’s promise that in it he could destroy every possible Earth in every possible universe. So I’m not sure I’ll listen to it, especially as the series is being carried on by other writers.

I also wasn’t impressed by Adams’ expressed contempt for the genre he wrote in. Back in the 1990s he was interviewed on the radio by Paxo, who said his book was Science Fiction, but different. It was good. Adams replied by saying that he didn’t write Science Fiction. Which is odd, because that’s what Hitch-Hiker is. But I guess Adams wanted to avoid being pigeonholed as a genre writer.

At that time the prejudice of the literary establishment towards Science Fiction and Fantasy was much stronger than it is now. I can remember seeing Terry Pratchett speaking at the Cheltenham Festival of Literature, saying how the organisers looked on him as if he was going to talk to people about fixing motorcycles. There’s a clip of the BBC arts programme, The Late Review, in which the Oxford lecturer and poet, Tom Paulin, and a female litterateur are asked to review one of Pratchett’s books, where they both make very disparaging remarks. The woman states that she felt like writing across it in big lines ‘I cannot read any more’. Paulin compared it to lifting up a stone to find all these weird people doing weird things underneath it. And going further back to the 1950s Brian Aldiss commented in The Trillion Year Spree that at that time, despite being championed by Kingsley Amis, pornography had a better reputation than Science Fiction amongst the literary elite.

Pratchett had to fight against that literary snobbishness throughout his life, but is now being taken very seriously by critics. I think Adams avoided it. Back in the ’90s he and Hitch-Hiker were the subjects of one edition of the South Bank Show with Melvin Bragg. But perhaps the price of that critical acclaim was his denial that he wrote Science Fiction at all.

But other people are different, and so I’ve no doubt that there are millions of Hitch-Hiker fans out there, who will be delighted to hear the news. They know who they are. They’re the people, who bought merchandising, like the Hitch-Hiker bath towels. This was a large, white bath towel with the text from the HHGG talking about how every Hitch-Hiker really needed to know where their towel was on it. I found one of those in Forever People, the comics/ SF shop in Bristol. The show’s fans are also the people, who organised conventions with dubious names like ‘Slartibartday’, after one of the creators of the Earth, Slartibartfast.

Hawking is in many ways an ideal choice for The Book after the death of Peter Jones, who was its original voice on Radio 4 and then in the BBC 2 TV series. He already has an electronic voice to fit the character of an electronic book, and is a world famous space scientist and advocate of space colonisation. But you wonder how massive his ego will be after playing a publication, which the Hitch-Hiker’s Guide to the Galaxy describes as, amongst some people, having displaced the great Encyclopaedia Galactica as the standard repository of all knowledge and wisdom.