Einstein's theory proved - higher you live, faster you age

Einstein

The world's most accurate atomic clock has clearly proved the nearly 100-year-old theory by Albert Einstein that time is a relative concept and the higher you live above sea level the faster you should age.

Einstein's theory of relativity states that time and space are not as constant as everyday life would suggest. He suggested that the only true constant, the speed of light, meant that time can run faster or slower depending on how high you are, and how fast you are travelling.

Now researchers have demonstrated the true nature of Einstein's theory for the first time with an incredibly accurate atomic clock that is able to keep time to within one second in about 3.7 billion years, roughly the same length of time that life has existed on Earth, The Independent reported.

James Chin-Wen Chou and his colleagues from the US National Institute of Standards and Technology in Boulder, Colorado, found that when they monitored two such clocks positioned just a foot apart in height above sea level, they found that time really does run more quickly the higher you are just as Einstein predicted.

"These precise clocks reveal the effects of gravitational pull, so if we position one clock closer to a planet, you also increase the gravitational pull and time actually runs slower than for another, similar clock positioned higher up," Chou said.

"No one has seen such effects before with clocks which is why we wanted to see if these effects are there. We would say our results agree with Einstein's theory we weren't expecting any discrepancies and we didn't find any," he explained.

The atomic clocks used in the study are based on the tiny vibrations of aluminium atoms trapped in an electric field.

These vibrations are in the same frequency range of ultraviolet light, detected by lasers, which effectively means that the atomic timepieces are optical clocks, accurate enough to measure billionths of a second and to keep time accurately over millions of years.

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