Frequency refers to how often an event occurs. High frequency events, like waves, are measured in Hertz. Lower frequency events, like comets, are often referred to by terms like "twice a century" or even how many years until an event reoccurs. Events like comets happen with predictable regularity, but a "once in 100-year flood" does not refer to frequency, rather statistical probability (every year there is a 1/100 chance that the flood would occur).

To learn more about frequency from a Physics perspective, check out Hyperphysics.

Authors and Editors

Jordan Hanania, James Jenden, Kailyn Stenhouse, Jason Donev
Last updated: November 13, 2015
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