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Gravitys Century: From Einsteins Eclipse to Images of Black Holes free ebook download

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Astronomy and Cosmology

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Author(s):	Ron Cowen

Date:	2019	Format:	PDF	Language:	English	ISBN/ASIN:	0674974964
Pages:	1	OCR:		Quality:		ISBN13:
Uploader:	eternal	Upload Date:	7/15/2019 4:31:37 PM

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A sweeping account of the century of experimentation that confirmed Einsteins general theory of relativity, bringing to life the science and scientists at the origins of relativity, the development of radio telescopes, the discovery of black holes and quasars, and the still unresolved place of gravity in quantum theory.

Albert Einstein did nothing of note on May 29, 1919, yet that is when he became immortal. On that day, astronomer Arthur Eddington and his team observed a solar eclipse and found something extraordinary: gravity bends light, just as Einstein predicted. The finding confirmed the theory of general relativity, fundamentally changing our understanding of space and time.

A century later, another group of astronomers is performing a similar experiment on a much larger scale. The Event Horizon Telescope, a globe-spanning array of radio dishes, is examining space surrounding Sagittarius A*, the supermassive black hole at the center of the Milky Way. As Ron Cowen recounts, the foremost goal of the experiment is to determine whether Einstein was right on the details. Gravity lies at the heart of what we dont know about quantum mechanics, but tantalizing possibilities for deeper insight are offered by black holes. By observing starlight wrapping around Sagittarius A*, the telescope will not only provide the first direct view of an event horizona black holes point of no returnbut will also enable scientists to test Einsteins theory under the most extreme conditions.

Gravitys Century shows how we got from the pivotal observations of the 1919 eclipse to the Event Horizon Telescope, and what is at stake today. Breaking down the physics in clear and approachable language, Cowen makes vivid how the quest to understand gravity is really the quest to comprehend the universe.

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Gravitys Century: From Einsteins Eclipse to Images of Black Holes free ebook download

Category: Astronomy and Cosmology

Description: Click to see full description

Category:
Astronomy and Cosmology