Time dilation

We all heard about space-time,time dilation, length contraction etc.These are the ideas coming from special theory of relativity of Einstein.He gave a thought when any object goes in a speed nearly of light then it's mass converts into emerge
This is a huge change in the history of science.We all know about the popular equation.

Hence from these ideas many theory invented.Lorentz also came in the field of physics.we know about Lorentz contraction.Time dilation is the property which says that  for a particle which go in the speed of light,to it time goes very slowly,otherwise for any normal particle in any inertial medium time goes normally.

In a brief we say that moving clock goes slow.Here arises the twin paradox.It says that there are two twin brother.one of them is interested in space .So one brother went space in a speed of light 'C',other bother lived in earth normally,The astronomer brother who went space spend 3 years in space.The time is 3 years to him.Then he came back to earth and saw that his other brother in earth became very old.To the twin who lived in earth many time gone in this incident.So,Time moves very slowly to the astronomer twin.This paradox is called twin paradox.For earth twin time moves slowly,So time dilation occurred.This is called time dilation.