An ultra-precise method of time synchronization through cosmic rays has appeared

The researchers noted that a reliable system for measuring time already exists in the world. However, she

imperfect and vulnerable to cyberattacks and disruptions.Therefore, scientists from the University of Tokyo decided to improve the system and develop a new time synchronization method that uses the properties of cosmic rays.

They noted that with time synchronization there istwo big problems. The first is keeping the watch accurate over a long period of time. Modern clocks mostly run on the rhythmic vibrations of quartz crystals, but they cannot be compared to atomic clocks. Thanks to these atomic measurements, the latest atomic clocks are only one second behind every ten million years.

But the second, even more difficult task in chronometry- synchronization of all clocks around the world. For example, clocks on board satellites in orbit must be regularly calibrated against ground-based atomic clocks in order to be stable. It is precisely this synchronization problem that Professor Hiroyuki Tanaka of the University of Tokyo hopes to solve with the new method.

Tanaka called the new method CTS (Cosmic Timesystem). It is based on sensors that detect particles left behind after cosmic rays collide with Earth's atmosphere. Cosmic rays scatter at an altitude of about 15 km, causing a stream of particles, some of which reach the ground, including muons moving at close to the speed of light. CTS devices in multiple locations can detect these muons and use them to synchronize with each other. Each muon stream is unique, allowing CTS devices to identify a single event and synchronize with each other based on that event.

Muons can penetrate stone and water, so thesethe devices will work inside buildings, on submarines and in underground railway tunnels. “Modern synchronization has a lot of “dead zones” in mountainous areas and underwater, CTS can fill these and other gaps. And since these are signals of natural origin, they cannot be tampered with or hacked like artificial GPS signals, ”the scientist notes.

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