A nuclear clock or nuclear optical clock is an atomic clock which uses photons from a nuclear isomeric transition as its reference frequency, instead of the atomic electron transition energy used by conventional atomic clocks. Such a clock is expected to be more precise than the best current atomic clocks by a factor of about 10, with an achievable precision approaching the 10−19 level.
A nuclear clock or nuclear optical clock is an atomic clock which uses photons from a nuclear isomeric transition as its reference frequency, instead of the atomic electron transition energy used by conventional atomic clocks. Such a clock is expected to be more precise than the best current atomic clocks by a factor of about 10, with an achievable precision approaching the 10−19 level.
Source: Wikipedia "Nuclear clock" · CC BY-SA 4.0
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