Clocks and The Law of Physics
Contrary to what we might expect, all clocks do not tell the exact same time.
According to the general theory of relativity put forth by Albert Einstein, time can run faster or slower depending on how high you are, and on your speed.
This theory was put to the test by scientists at the National Institute of Standards and Technology who set up two atomic clocks.
One was placed a mere 33 centimeters higher than the other.
The higher clock, as per the predictions of Einstein's theory, ran at a slightly faster pace than the one below.
Though the difference is minuscule, this time dilation effect has significant implications for high-precision timekeeping systems, such as GPS satellite systems.
For these systems, corrections have to be put in place to account for these time discrepancies induced by gravitational and motion effects, thus aligning with Einstein's remarkable prediction..