Hey there do you know what is a time dilation
you might be getting confused and shock about it as you heard the word time dilation.
Time dilation is nothing but its the difference in the time with respect to two observer due to a velocity difference relative to each other, or by being differently situated relative to a gravitational field.
It means time can be controlled if we increase the velocity of a body by doing so we can slow down the time.
follow url Now you might be thinking how can a time be controlled ?
yes it is possible to control the time as einstein special relativity says about time dilation.It means we can slow down the time if we can travel at the speed of light or if we are pulled by a gravitational force which has enoromous force like a black hole.
go to site How can we slow down the speed of the time?
this can be understood by the space time.As travelling at a speed of light the we are travelling more distance .
To better understand it think a simple clock having two mirrors opposite to it and the light particle is bouncing from top to bottom one the other hand think about the same mirror clock which is travelling at a speed .
now if the light is travelling more distance than the time will run slow or else you can think by taking the formula speed =distance / time i.e speed is inversely proportional to time.
watch can we travel at the speed of light?
No that is not possible at all because according to einstein the mass also increases as velocity increases so if we travel then we will be gaining mass within some milliseconds which human being can not tolerate as we will blast off.
As mass increases it will be a resistance to the speed so attaining the velocity of light is not possible at all.
Examples of time dilation.
1.if there were two twin so one twin left the earth with a spaceship which can attain the speed of light and later he comes back after 1 week when he comes back his twin brother has grown old and he has travelled 100 years according to the earth.
2.the same concept can be applied if one twin is near a black hole and the other on earth so the twin near black hole will be have a slow time compared to the twin.
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