The time which is very important in everyone's life but did you know the definition of time ? did you know how many hours we have in a day ? did you know Which things determine the time ? did you know the length of day is increasing?
In physics, Time is one of the seven fundamental physical quantities in both the International System of Units and International System of Quantities. According Einstein's theory of relativity time is determined by gravity and Velocity. If you travel fast, then the passage of time runs slowly for you. In the same way if you are in a strong gravitational field then the passage of time runs slowly for you. If you travel at 90% percent speed of light then the passage for you becomes half. For example if 10 minutes passed on earth than for you only 5 minutes will passed. At infinite gravity time doesn't exist such conditions are found at black holes. Time is the fourth dimension. Many scientists are working on time travel if they got success then we can go in future and past anytime anywhere just like doraemon.
One second is defined as the 9,192,631,770 vibrations of cesium atom. Time is measured by the periodic motion like periodic motion of pendulum, vibration, etc. In future We may use pulsar stars to measure time because the pulsation by pulsar stars is so regularly.
According to psychology time is determined by your feelings
Time is slow when you wait !
Time is fast when you are late !
Time is deadly when you are sad !
Time is short when you are happy!
Time is short when you are happy!
Time is Endless when you are in pain!
Time is Long when you feel bored !
Time is Long when you feel bored !
Time is most beautiful when you are in love !
We have only 23 hours and 56 minutes in day. We don't have 24 hours in a day. But did you know the length of day is increasing because the earth's rotation is slow downing due to moon's gravity. After 200 million years we will have 25 hours in a day. The increase in day length per century is 2 millisecond.
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