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Description
Relativity Simply ExplainedSince the publication of Einstein's Special Theory of Relativity in 1905, the discovery of such astronomical phenomena as quasars, pulsars, and black holes all intimately connected to relativity has provoked a tremendous upsurge of interest in the subject. This volume, a revised version of Martin Gardner's earlier Relativity for the Million, brings this fascinating topic up to date. Witty, perceptive, and easily accessible to the general reader, it is
Since the publication of Einstein's Special Theory of Relativity in 1905, the discovery of such astronomical phenomena as quasars, pulsars, and black holes -- all intimately connected to relativity -- has provoked a tremendous upsurge of interest in the subject.This volume, a revised version of Martin Gardner's earlier Relativity for the Million, brings this fascinating topic up to date. Witty, perceptive, and easily accessible to the general reader, it is one of the clearest and most entertaining introductions to relativity ever written.Mr. Gardner offers lucid explanations of not only the special and general theories of relativity, but of the Michelson-Morley experiment, gravity and spacetime, Mach's principle, the twin paradox, models of the universe, and other topics. A new Postscript, examining the latest developments in the field, and specially written for this edition, is also included.
The clarity of the text is especially enhanced by the brilliant graphics of Anthony Ravielli, making this "by far the best layman's account of this difficult subject." -- Christian Science Monitor.
Binding Type: Paperback
Publisher: Dover Publications
Published: 03/06/1997
ISBN: 9780486293158
Pages: 192
Weight: 0.59lbs
Size: 8.54h x 5.42w x 0.48d
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★★★★★ 5
Smell heavenly
Size: 16 Fl Oz (Pack of 1), Style: Pawsitively Fresh
This smells amazing. The smell lingers . It’s a Must have if you have pets and need to refresh the furniture.
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Reviewed in the United States on April 30, 2026
★★★★★ 3
Depends on where you're using it
Size: 16 Fl Oz (Pack of 1), Style: Pawsitively Fresh
It's great that veterinarians approve this product as one of the safer options for pets. It smells good and it does the job as good or better than others I've tried. The reason I won't continue to use it is that it is a heavy liquid and when you spray it into the air, falls to your floor very quickly. On tile, it leaves a shiny oily "wet" patch that can make the tile slippery which is dangerous and on carpet, since it is oily, I assume that dirt will quickly adhere to those areas forcing a carpet cleaning in a short amount of time. I happen to have cream carpet.
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Reviewed in the United States on August 4, 2025
★★★★★ 5
Love, love, love
Size: 16 Fl Oz (Pack of 1), Style: Pawsitively Fresh
Seriously, I LOVE this scent!
Works great, easy to use! I’d love that as natural ingredients and that I can spray it anywhere.
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Reviewed in the United States on June 1, 2026
★★★★★ 4
Nice
Size: 16 Fl Oz (Pack of 1), Style: Pawsitively Fresh
It's fine. It works well to mask the scent of whatever you're trying to hide. No residue. I just wish it was a bit more citrus-y.
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Reviewed in the United States on May 26, 2026
★★★★★ 5
It works!
Scent: Smoky coffee, Size: 4 Fl Oz (Pack of 1)
There is a strong smell or roasted coffee beans but since I started using this product my edges are healthier and the hair at the middle of my head that has been struggling to grow is gaining some length. The product itself can get hard depending on the temperature of your room but if you use it as directed the texture isnt so bad. The oil is thick and not very greasy or difficult to wash away. Definitely effective. 100% will recommend.
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Reviewed in the United States on December 16, 2025