4. The existence of time speed
In a gravitational field, it has been theorized and proven
by the theory of relativity that time slows down. Therefore,
if you place a series of clocks vertically in the gravitational
field above the earth, they will beat slower, if close to the
surface, and beat faster away from earth(4.a). From that, one can
infer that there is a time speed gradient in a gravitational
field.(4.b)
fig 4.1 earth gravitational field and time speed gradient
