One incorrect but very common notion is that clocks measure rate of passage of time. Instead clocks actually measure the intervals between time . What is the difference?
We cant really find out how fast time moves , because time is a human-constructed notion .A example , on the basis of theory of relativity states that it is merely necessary to get up from your seat and walk a little to sweep thought thousands of years of reality of some distant star. it means that if while sitting we observe say 1000th yr of that star , after taking a short stroll , we would find that it is 6000th year of star's reality .
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