The device is more accurate than an atomic clock

Scientists have studied a type of laser clock with an accuracy of three times the atomic clock.

Previously, humanity relied on the Earth's rotation to calculate time and considered an Earth's rotation equivalent to one day. However, because the Earth is tilted on its axis during rotation, some days may be shorter or longer than other days.

Atomic clocks have been proven to be a more accurate method of determining time, and it has been used to calculate seconds in the International System of Units since the 1960s. They discovered a more accurate method to calculate time.

This so-called optical lattice is only 1 second wrong for 300 million years, meaning it is three times more accurate than the current atomic clock.

Optical eyeglasses are 3 times more accurate than atomic clocks

From this finding, the team published in Nature Communications that they propose a more accurate system to calculate seconds.

The current atomic clock system uses very regular "vibrations" of atoms to calculate the time gap by transmitting microwaves into a cloud of cesium atoms to make them vibrate. However, in the new system, scientists use light to stimulate strontium atoms.

Dr. Jerome Lodewyck of the Paris Observatory said: 'In these watches we use laser beams. Lasers produce vibratory stimuli much faster than microwave radiation, and we divide the time into much shorter distances to calculate time more accurately. "

This optical clock is more than three times more accurate than the cesium atomic clock, which is only 1 second false every 100 million years.

The team hopes this type of watch will contribute to redefining time

In addition to comparing optical lattice clocks with atomic clocks, the team also compared two optical clocks together, and as a result, these two clocks are completely uniform in time and also very stable. .

Dr. Lodewyck explains: 'For example, you have a watch, and today you are 1 second late, tomorrow is 1 second early, which means your watch is not stable. But if it still ensures accuracy for 1 million days, that time is right. "

Many current technologies such as telecommunications, satellite navigation and the stock market depend heavily on time calculation methods. The team thinks that their new optical clock will contribute to redefining the second one day.

Another type of watch is also being studied, the ion meter. This type of watch is only 1 second in a few billion years, but because it depends on a single ion, the stability required for widespread use is not achieved.