Gravitational Waves How Einstein's spacetime ripples reveal the secrets of the universe【電子書籍】[ Brian Clegg ]
＜p＞On 14 September 2015, after 50 years of searching, gravitational waves were detected for the first time and astronomy changed for ever.＜br /＞ Until then, investigation of the universe had depended on electromagnetic radiation: visible light, radio, X-rays and the rest. But gravitational waves ? ripples in the fabric of space and time ? are unrelenting, passing through barriers that stop light dead.＜br /＞ At the two 4-kilometre long LIGO observatories in the US, scientists developed incredibly sensitive detectors, capable of spotting a movement 100 times smaller than the nucleus of an atom. In 2015 they spotted the ripples produced by two black holes spiralling into each other, setting spacetime quivering.＜br /＞ This was the first time black holes had ever been directly detected ? and it promises far more for the future of astronomy. Brian Clegg presents a compelling story of human technical endeavour and a new, powerful path to understand the workings of the universe.＜/p＞画面が切り替わりますので、しばらくお待ち下さい。
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