GGR337H1 Lecture Notes - Lecture 2: Radiance, Lambertian Reflectance, Solid Angle
7 Sep 2016
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Document Summary
The electromagnetic (em) spectrum is the range of all types of em radiation. Radiation is energy that travels and spreads out as it goes the visible light that comes from a lamp in your house and the radio waves that come from a radio station are two types of electromagnetic radiation. The other types of em radiation that make up the electromagnetic spectrum are microwaves, infrared light, ultraviolet light, x-rays and gamma-rays. Remote sensing images record the interaction of electromagnetic energy w/ the earth"s surface. The most familiar from of electromagnetic radiation is visible light. Maxwell"s theorem: two properties of electromagnetic ration involve wave and particle. To quantify this, we use equation 1: = c. Wavelength is defined as the distance between two successive crests of a wave. When studying light, the most common units used for wavelength are: meter, centimeter, nanometer, and ngstr m. = the frequency of the light wave.
