The new clock corrects the timing

After 50 years, the definition of a second has changed because scientists have produced the most accurate clock in history.

German scientists believe they have found the most accurate way to calculate time. Accordingly, the Big Bang explosion about 14 billion years ago that we calculated was deviated 100 seconds.

This change is difficult to recognize by humans but is important for the current global GPS navigation system. It will increase the accuracy of the system from meter errors to several centimeters.

The new clock changes the definition of a second of a human being - (Photo: Independent).

In fact, the way to measure time is still based on the idea of ​​a pendulum . Since 1967, International System of Units (SI) introduced the concept of one second as 9.192.631.770 cycle of microwave signals emitted by shaking vibrations.

However, like a traditional pendulum clock, they can run fast or slow with an error of about 1 nanosecond / 30 days.

The report published in Optica magazine describes a new watch that uses the strontium atom - an element that is much faster than cesium in the popular types of watches today. In addition, it will be an optical clock - using spectroscopy instead of microwaves in normal pendulum vibrations.

If a second is defined based on strontium, it will last about 429,000 billion cycles. The new calculation method on the meter reduces the error to less than 0.2 nanoseconds / 25 days.

Dr Christian Grebing of the German National Metrology Institute said: "Our research is an important milestone for making optical clocks a reality."

These optical clocks use lasers to regulate atoms and ions in the vacuum chamber that are not shielded from external influences, having encountered many technical problems that are complex and easy to stop. But Dr. Grebing said, this study solved that problem.

The new calculation method on the meter reduces the error to less than 0.2 nanoseconds / 25 days - (Photo: 3tag).

He added that redefining the length of a second should be delayed for about 10 years. This allowed scientists to create other observational clock versions using different types of substances such as aluminum and ion atoms instead of strontium.

"We want to improve the timing base around the world with better and better watchmakers and then integrate them into the time-keeping infrastructure. What we have proven is the first step. directing to the global improvement of timing, 'explained Christian Grebing. In addition, once the length of a second is redefined, humanity wants to have a smooth transition, minimizing the length of the difference as possible.