ABC of Relativity (Routledge Classics), by Bertrand Russell
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ABC of Relativity (Routledge Classics), by Bertrand Russell
Free PDF Ebook ABC of Relativity (Routledge Classics), by Bertrand Russell
First published in 1925, Bertrand Russell’s ABC of Relativity was considered a masterwork of its time, contributing significantly to the mass popularisation of science. Authoritative and accessible, it provides a remarkable introductory guide to Einstein’s theory of Relativity for a general readership. One of the most definitive reference guides of its kind, and written by one of the twentieth century’s most influential philosophers, ABC of Relativity continues to be as relevant today as it was on first publication.
ABC of Relativity (Routledge Classics), by Bertrand Russell- Published on: 2015-05-19
- Original language: English
- Number of items: 1
- Dimensions: 7.80" h x .0" w x 5.08" l,
- Binding: Hardcover
- 168 pages
Review ‘An ideal introduction to the theories of special and general relativity’ - Nature.
About the Author
Bertrand Russell (1872-1970). A celebrated mathematician and logician, Russell was and remains one of the most genuinely widely read and popular philosophers of modern times.
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23 of 28 people found the following review helpful. A Philosopher who truly understands relativity By Thomas Wikman Bertrand Russel was an excellent writer, and one of the few philosophers who truly understood relativity. This book is also a classic. However, the book attempts to explain relativity to the layman using "text" only. The book is not mathematical, and it contains very few graphs or diagrams. This is not the best approach to explaining relativity. Good graphs/diagrams/images can to a certain extent replace equations. There are many modern introductory books and multimedia presentations that does a better at job at introducing relativity.I recommend this book as a "classic", but not as an introduction to relativity for the non-physicist.
11 of 14 people found the following review helpful. ABZ of Relativity By Cevat Cokol I think this book can justifiably be called ABZ of relativity. The author sincerely tries to tell us about relativity by building up from basic elements, but at the point it gets to the stuff that is supposed be really interesting, it becomes unintelligible for the less gifted. He gives three pages to tell us about the difference between mass and weight, but the central concept of "interval" is used for some pages before being poorly defined and explained. I am positively sure he understands relativity and all, and I am sure those definitions are correct in the strictest sense, however they didn't help a beginner, at least in this case. Having said this though, this book is still a very nice read and could be read even if only for its strange humor and wisecracks.
1 of 1 people found the following review helpful. THE EMINENT PHILOSOPHER PROVIDES AN EXCELLENT EXPLANATION OF EINSTEIN'S THEORIES By Steven H Propp Russell's book was first published in 1925; later editors have made some changes to accommodate more recent development in Relativity theory, but Russell's illustrations and text remain as illuminating as they always were.He points out, "A certain type of superior person is fond of asserting that 'everything is relative.' This is, of course, nonsense, because, if EVERYTHING were relative, there would be nothing for it to be relative to. However, without falling into metaphysical absurdities it is possible to maintain that everything in the physical world is relative to an observer. This view... has led philosophers and uneducated people into confusions. They imagine that the new theory proves EVERYTHING in the physical world to be relative, whereas, on the contrary, it is wholly concerned to exclude what is relative and arrive at a statement of physical laws that shall in no way depend upon the circumstances of the observer." (Pg. 16)He observes, "Physics must... be concerned with those features which a physical process has in common for all observers... This requires that the LAWS of phenomena should be the same whether the phenomena are described as they appear to one observer or as they appear to another. This single principle is the generating motive of the whole theory of relativity." (Pg. 23)He explains, "When people said that space had three dimensions, that meant... that three quantities were necessary in order to specify the position of a point in space, but that the method of assigning these quantities was wholly arbitrary. With regard to time, the matter was thought to be quite different... it was thought that the method of fixing position in space and the method of fixing position in time could be made wholly independent of each other... The theory of relativity has changed this. There are now a number of different ways of fixing position in time, which do not differ merely as to the unit and the starting-point... the space and time reckonings are no longer independent of each other." (Pg. 42)He observes, "In the general theory of relativity, it is only neighbouring events that have a definite interval, independent of the route by which we travel from one to the other... The interval between neighbouring events, with it is time-like, will appear as the time between them for an observer who travels from the one event to the other... For some routes this time will be longer, for others shorter; the more slowly the man travels, the longer he will think he has been on the journey... I am not saying that if you travel from London to Edinburgh you will take longer if you travel more slowly. I am saying something much more odd. I am saying that if you leave London at 10 a.m. and arrive in Edinburgh at 6:30 p.m.... the more slowly you travel the longer it will take---if the time is judged by your watch... But if you had been a ray of light travelling round the solar system, starting from London at 10 a.m. ... until at last you were reflected back to Edinburgh and arrived there at 6:30 p.m., you would judge that the journey had taken you exactly no time... the diminution of time would be continual as your speed approached that of light." (Pg. 78-79)He says about Einstein's theory of gravity, "The most interesting point about it is that it makes the law no longer the result of action at a distance; the sun exerts no force on the planets whatever... The law of gravitation has become the geometrical law that every body pursues the easiest course from place to place, but this course is affected by the hills and valleys that are encountered on the road." (Pg. 81-82) Later, he adds, "The planets move round the sun because that is the easiest thing to do... It is the easiest thing to do because of the nature of the region in which they are, not because of an influence emanating from the sun." (Pg. 124)This (along with Einstein's own Relativity: The Special and the General Theory), is one of the most helpful explanations of Relativity to us "non-scientists."
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