Suppose there are two twin brothers, one of them remains on earth while the other goes for a space travel at a very high speed (comparable to the speed of light). The astronaut comes back from…
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Time is an obvious physical quantity that can be felt in daily life but defining it remains a challenge even for the physicists of current times. A famous scientist once said ‘time is something that flows…
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Michelson interferometer, as it is famously called, is used in the Michelson-Morley experiment. Earth moves around the sun at a speed of around 108000 km/h so when a light beam is shone along the direction…