Multiple choice

Very small time intervals are accurately measured by the

  1. Pulsars

  2. Quartz Clocks

  3. Atomic Clocks

  4. White dwarfs
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Atomic clocks use the frequency of atomic vibrations (typically cesium-133) to measure time with extreme precision - accurate to within one second in millions of years. They are far more precise than quartz clocks or astronomical methods.

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