অনুসন্ধান করুন
Atomic clock
01
a timepiece that derives its time scale from the vibration of atoms or molecules
উদাহরণ
Pendulum clocks were widely used before the invention of quartz and atomic clocks.
অ্যাপ ডাউনলোড করুন
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অনুসন্ধান করুন
a timepiece that derives its time scale from the vibration of atoms or molecules