Frequency is the amount of cycles that occur within a given unit of time, and is usually measured in cycles per second, or Hz.

Frequency applies to electromagnetic radiation since it travels as a wave at the speed of light.

The natural frequency of the radiation coming from the human-standing body is about 7.5 Hz. Humans give off mostly infrared radiation, a type of electromagnetic radiation associated with heat, which has a frequency lower than visible light.

Physics currently recognizes Nature as having four (4) fundamental forces:

• Electromagnetic
• Weak Nuclear
• Strong Nuclear
• Gravitational

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11.04.2022 / Northwestern University / What is frequency?