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Nt1210 Lab 10.1

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Unit D Summary: Light and Geometric Optics

10.1:Light and The Electromagnetic Spectrum
Chapter 10.1 covers light and the electromagnetic spectrum. This chapter starts off by describing how light is a form of energy that travels in waves. The properties of said waves include a crest (the highest point of the wave), the trough (the lowest point of the wave), and the rest position (the level of a wave without energy). The three most important properties of a wave are the wavelength, the amplitude, and the frequency. The wavelength is the distance from one point on a wave to the next identical point on the next wave. The amplitude is the distance from a waves rest position to either the crest or trough of the wave. The frequency is a rate which represents the amount of times a wave repeats …show more content…

This reaction does not cause a rise in temperature.
One other source is triboluminescence which is light produced from friction. Another source is electric discharge which is light produced when an electrical current passes through air or another, like neon, that produces a glow.
Another source is light-emitting diode which is light produced when an electrical current passes through a semi-conductor which controls how well is conducts electricity.
Another source of light is an organic light-emitting-diode which is light produced when several thin layers of organic material are exposed to an electrical current and glow as a result. Another source is plasma displays which is light produced when an electrical signal causes, a gas similar to neon, to release ultraviolet radiation.
One last source of light is liquid crystal display. This is light produced when a white light is placed behind a liquid crystal. That crystal can then change the orientation of its molecules and block or allow light as required. This is only possible, however, when electricity is applied to the

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