The EM spectrum or electromagnetic spectrum is the range of all possible frequencies of electromagnetic waves (radiation). Electromagnetic waves are radiation consisting of of waves of energy associated with electric and magnetic fields resulting from the acceleration of an electric charge. The spectrum shows the lowest frequencies to the highest frequencies. Radio waves are the lowest type of radiation, it's frequency ranges between 500 - 1000 kHz. Microwaves are greater than radio waves, it's frequency ranges between 10⁹ - 10¹¹ Hz. Infrared is greater than microwaves, it's frequency ranges between 10¹¹ - 10¹⁴ Hz. Visible light (radiation) is visible to the human eye and it's frequency ranges between 4 × 10¹⁴ - 7 × 10¹⁴ Hz, the colors in the visible spectrum consist of (from lowest frequency to highest) red, orange, yellow, green, blue, indigo, and violet. Ultraviolet rays have a frequency between 10¹⁴ - 10¹⁷ Hz, this can cause skin cancer and cataracts. X-rays have a frequency between 10¹⁷ - 10¹⁹ Hz, they can penetrate though objects so they are used to view bones, tumors and ect. Gamma rays have the highest frequencies that are greater than 10¹⁹ Hz.
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| Here is visible light, yeah I know, it's simple.... |
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