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Description
Is Einstein Still Right?: Black Holes, Gravitational Waves, and the Quest to Verify Einstein's Greatest CreationAlbert Einstein is often viewed as the icon of genius, and his theories are admired for their beauty and correctness. Yet the final judge of any theory is the rigorous test of experiment, not the fame of its inventor or the allure of its mathematics. For decades, general relativity has passed test after test with flying colors, including some remarkable new tests using the recently detected gravitational waves. Still, there are reasons for doubt.
Albert Einstein is often viewed as the icon of genius, and his theories are admired for their beauty and correctness. Yet the final judge of any theory is the rigorous test of experiment, not the fame of its inventor or the allure of its mathematics. For decades, general relativity has passed test after test with flying colors, including some remarkable new tests using the recently detected gravitational waves. Still, there are reasons for doubt. Einstein's theory of gravity, as beautiful as it is, seems to be in direct contradiction with another theory he helped create: quantum mechanics. Until recently, this was considered to be a purely academic affair. But as more and more data pour in from the most distant corners of the universe, hinting at bizarre stuff called "dark energy" and "dark matter," some scientists have begun to explore the possibility that Einstein's theory may not provide a complete picture of the cosmos. This book chronicles the latest adventures of scientists as they put Einstein's theory to the test in ever more precise and astonishing ways, and in ever more extreme situations, when gravity is unfathomably intense and rapidly churning. From the explosions of neutron stars and the collisions of black holes to the modern scientific process as a means to seek truth and understanding in the cosmos, this book takes the reader on a journey of learning and discovery that has been 100 years in the making.Binding Type: Hardcover
Publisher: Oxford University Press, USA
Published: 10/01/2020
ISBN: 9780198842125
Pages: 304
Weight: 1.15lbs
Size: 8.60h x 5.40w x 0.90d
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★★★★★ 5
Works well, smells great, goes on easily
Sun protection factor: 15 Sun Protection Factor (SPF), Size: 6 Count (Pack of 2)
It smells good. It goes on easily with the spray bottle. It keeps me from burning while out biking. It's a good price. Overall, a very nice product that does what it should. We carry it in our bike packs and in the car when we know we'll be out in the sun all day. Doesn't feel heavy when sprayed on so it smooths over your skin very well. Keeps me from burning.
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Reviewed in the United States on July 9, 2025
★★★★★ 5
Good sunscreen
Sun protection factor: 70 Sun Protection Factor (SPF), Size: 6 Ounce (Pack of 1)
Works well, nice smell, easy to apply
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Reviewed in the United States on May 29, 2026
★★★★★ 5
Get Outside!
Sun protection factor: 15 Sun Protection Factor (SPF), Size: 6 Count (Pack of 2)
Love, smells great!
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Reviewed in the United States on June 7, 2026
★★★★★ 5
My favorite sunscreen!
Sun protection factor: 70 Sun Protection Factor (SPF), Size: 6 Ounce (Pack of 1)
I have been using Hawaiian Tropic sunscreen for years and absolutely love the smell. I wanted to try a spray version as I hate the feeling of oily hands after applying sunscreen. This version sprays on super evenly and has that same beachy smell as the lotion! It stays on for hours and doesn’t leave a sticky residue. My go to sunscreen! With such high SPF as well, this sunscreen truly cannot be best for the value.
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Reviewed in the United States on May 8, 2026
★★★★★ 5
my favourite spf
Sun protection factor: 15 Sun Protection Factor (SPF), Size: 6 Count (Pack of 2)
This is one of my favourites SPF out there. It goes on so easily and always protects me so well from the Sun. It smells absolutely gorgeous and leaves my skin so soft and silky.
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Reviewed in the United States on February 2, 2026