Einstein’s theory of relativity predicts the stretching out of time, time moving at different speeds and is known to happen in the cosmos. For example, if you are near a black hole or in a speeding galaxy. Yet in 2010, researchers were able to look at the effects of relativity here on Earth at a much smaller scale.
By using the atomic clocks, clocks that are much more accurate than standard watches, physicists were able to show that time does indeed move much slower when someone happens to be closer to Earth. The research brought to life that even a slight difference in height of 1 foot (33 centimeters) can cause an actual measurable difference in time.
To break this down for you in a concrete example, if you one twin lived at an altitude 1 foot higher than the other then the first twin would actually be 90 billionths of a second older. So that means if you want to live longer, never go up in altitude. Mountain climbing or skiing should definitely be avoided!
The researchers used super sensitive clocks, that used an atom to vibrate over a million billion times a second. This allowed them to truly measure the differences in time and when they placed one higher, just as Einstein had theorized, the clock which was placed higher did run a little faster than the lower clock.
At the same time, they also proved another of Einstein’s theories that time seemed to move slower when standing still compared to the motion. This was done with two identical atomic clocks, one set in motion across the lab and the other stood still. The lead on the study Chin-Wen Chou from the National Institute of Standards and Technology advised that:
“We have to discard the concept of absolute time”
As physics and research continue to leap forward, we may even see more theories of time proved. Eventually, we may even understand exactly why time moves differently when at different heights or movement.