01:750:109 Chapter Notes - Chapter 5.1: Sunburn, Electromagnetic Spectrum, Radiography
7 Jul 2016
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Document Summary
Spectrum the light from the sun as it appears when we pass it through a prism or similar device. The electromagnetic spectrum (from shortest wavelength to longest) Frequency the number of times that any piece of the wave moves up and down each second. If wave moves up and down three times each second, we have to say that the wave has a frequency of three cycles per second, or three hertz. The distance between adjacent peaks in a row of electrons would tell us the wavelength of the light wave, while the number of times each electron bobbed up and down would tell us the frequency. Because light can affect both electrically charged particles and magnets (which is why light is called electromagnetic radiation and the spectrum of light is called electromagnetic spectrum) The longer the wavelength of light, the lower its frequency and energy.
