voiceofaa
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The world experienced a great leap in science when Einstein proposed his theories of Special and General Relativity. For about 200 years physics depended on Newtonian laws. It was thought then that time was constant; an hour is the same all over, under any conditions.
Understanding of time soon changed, and time was different ever since.
Let's view the way Newton thought of time. It was said that time can be related to the running of water in a river. Should the speed of the water be measured at any point, it would yield equal results. The same was thought of time; if time was measured at any point in the universe it would be the same.
Suppose George and Bill synchronised their watches. George left on a super fast spaceship, and came back an hour later (according to his own watch). Newton would say that Bill would have waited an hour for George to come back, and their watches would read the same time.
Understanding of time soon changed, and time was different ever since.
Let's view the way Newton thought of time. It was said that time can be related to the running of water in a river. Should the speed of the water be measured at any point, it would yield equal results. The same was thought of time; if time was measured at any point in the universe it would be the same.
Suppose George and Bill synchronised their watches. George left on a super fast spaceship, and came back an hour later (according to his own watch). Newton would say that Bill would have waited an hour for George to come back, and their watches would read the same time.