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This 2 page Class Notes was uploaded by Charles Miller on Monday September 19, 2016. The Class Notes belongs to ISCI 101 at James Madison University taught by Tom Devore in Fall 2016. Since its upload, it has received 11 views. For similar materials see Physics, Chemistry, and the Human Experience in Science at James Madison University.
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Date Created: 09/19/16
ISCI 101 Week 3 Waves Wavelength: The distance from crest to crest (or from any point on the wave to the next identical point) Frequency: The number of times a wave occurs divided by a given time Wavelength is equal to Frequency*Velocity Light Spectrum 10^3 Radio 10^2 Microwave 10^5 Infrared 10^6 Visible 10^8 Ultraviolet 10^10 XRay 10^12 Gamma Ray Theories of Light The Wave Theory of Light Christian Huygens, waves that spread out from the source that generates the light. Each color is a different wavelength. Corpuscular Theory of Light Newton, theory that treats light as being composed of tiny particles Electromagnetic Theory of Light James Maxwell, describes light as having electric and magnetic properties. It is an improvement over the wave theory in that it explains how light is generated. Visible light is only one type of electromagnetic wave. Quantum Theory of LightSimilar to corpuscular theory of Newton, except that instead of describing light as particles, light is composed of ‘packets of energy’ or photons. The energy of the photon determines the color. (Planck) Black Body Radiation As objects are heated they glow. The color and intensity depend on the temperature of the object.
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