JUST 发表于 2025-3-25 05:45:52
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Mechanics and electromagnetism,netic theory. Although the former was established almost two hundred years before the latter, it did not enjoy the same rigorous foundations. One of the first to recognize this was Ernest Mach (1836–1916), who was to have such a great influence on Einstein. Since Mach’s day, Newton’s laws have been印第安人 发表于 2025-3-25 13:05:10
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Space and time, Albert Einstein (1879–1955). It is difficult, after a span of some seventy years, to realize the magnitude of the problem and to appreciate the enormous intellectual and imaginative leap that Einstein had to make. It is, however, salutory to read that even for Einstein the problem was not an easy one.葡萄糖 发表于 2025-3-26 16:03:50
The Lorentz transformation,her we can take the velocity of light or the interval as an invariant. Clearly there is no conflict between these two statements, since we derived the second from the first. Which we take is a matter of personal choice, so let us take the invariance of the velocity of light, simply on the grounds that it is the experimentally observed invariant.Condense 发表于 2025-3-26 17:37:25
The conservation of energy and momentum,ow do these equations transform under the Lorentz transformation? Are they form invariant? If they are not, we seem to be in the same difficulty that led us to derive the new transformation, namely that half of nineteenth-century physics does not satisfy the principle of relativity.