We hear the word used a lot, but what is resonance? First, in order to explain we have to explain the terms we will use.

• A period is the amount of time it takes to complete one cycle
• The number of cycles in one second is the frequency of an oscillation.
• Frequency is measured in Hertz, named after the 19th-century German physicist Heinrich Rudolf Hertz
• One Hertz is equal to one cycle per second.

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