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Transcript: Any change in a gravitational field or gravitational configuration causes ripples in space time to be emitted. These disturbances which travel at the speed of light are called gravity waves or gravitational radiation. Pulsars slow down slightly in their periods, and this corresponds to the conversion of rotation energy into gravitational wave energy. It’s a very subtle effect and can only be measured because pulsars are such excellent clocks. In 1993 this indirect prediction of General Relativity, the emission of gravity waves, was confirmed by Joe Taylor and Russell Hulse who subsequently won the Nobel Prize in physics.
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قسمت های دیگر در این پادکست
Transcript: Collapsed stellar objects offer the best chance to test Einstein’s Theory of General Relativity. General Relativity is based on the idea that acceleration due to gravity is not distinguishable from acceleration due to any other force. The consequence of this idea is that gravity disto…
Transcript: A light beam is deflected slightly by gravity. According to E = mc2 any photon has energy, and so it has equivalent mass. Therefore, a mass acting on a photon will bend it. A better way to think of it is that the mass causes a distortion of space, so the photon is following the disto…
Transcript: A fundamental prediction of General Relativity is the fact that time slows down in strong gravitational fields. The ultimate test of this idea would be to observe someone falling into a black hole carrying a clock. In theory, the clock would slow down and come to a complete halt as th…
Transcript: If you throw an object up into the air it will eventually slow down and fall back to Earth. The object is losing kinetic energy by trying to climb out through the gravitational field of the Earth. Photons also lose energy as they climb out of the pit of gravity. This effect is called…
سلب مسئولیت: پادکست و آثار هنری تعبیه شده در این صفحه متعلق به Dr. Christopher D. Impey, Professor, Astronomy است که متعلق به صاحب آن است و به Listen Notes، Inc وابسته یا تایید نشده است.
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