Imagine you are looking at a clock. The time you are looking
at is not the true time; it is rather the time that you saw
a very short
while ago. The
light reflecting off the clock takes time to reach your eyes. Now
imagine
traveling
away
from
the clock
at
a
certain velocity. The light would take longer to reach your
eyes as
both you
and the light are moving in the same direction. Because of this,
the time you see on this clock is what it was some time ago.
However,
if you are moving at the speed of light away from the clock,
the light from the clock will never reach you. From this
phenomenon,
you never “see” the time. At this point, time
for you, relative to the time where the clock is, has stood
still.
This proved Einstein's definition of time, which is your
movement in relation to the movement of light.
Scientists use Einstein’s theory of relativity in order
to explain the creation of a black hole as well as the time
functions
in and
outside of a black hole. The theory of relativity combines the
theory of Special Relativity and the Equivalence Principle.
