Question

Considering gravitational time dilation, calculate the time that passes in Earth’s surface while 1 hour passes in deep space. Based on your answer, is general relativity obvious on Earth?

Answer 1

Gravitational time dilation on Earth's surface is
  
By using the binomial expansion, we write
   
   
   So, if the time in deep space is 1 hr, then
     
And for the Earth's surface
     
and
  
so, we get the time passed on the earth's surface
  
by putting the given values, we get
  
     

This implies that general relativity is obvious if we consider a very large and precise time calculation for example in the GPS system.