Radio & TV - Less than 3.0 × 108 Hz, Microwave - 1 × 1010 Hz, Infra-red - 1 × 1013 Hz, Visible - 7.5 × 1014 Hz to 4.3 × 1014 Hz, Ultraviolet - 1 x 1016 Hz, X-ray - 1 × 1018 Hz, Gamma - 1 × 1020 Hz,

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