New Portable Atomic Clock
June 15 , 2024
162 days
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- Researchers introduced a kind of portable optical atomic clock that can be used onboard ships.
- These devices traded some accuracy for size and robustness.
- They were still more accurate than other vessel-borne timekeeping options.
- Atomic clocks work by keeping time using atoms.
- Cs-133 is a highly stable atom and is found naturally, which is why it is so commonly used in atomic clocks.
- India also uses a Cs-133 atomic clock to define the second for timekeeping within its borders.
- A caesium atomic clock loses or gains a second every 1.4 million years.
- Atomic clocks are prized for their accuracy, losing or gaining just one second over 300 million years.
- Optical atomic clocks only loss or gain a second over 300 billion years.
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