CONS 127 Lecture 8: CONS 127 - The Electromagnetic Spectrum Part 2 Feb 1 2018

• School: UBC
• Department: Natural Resources Conservation
• Course: CONS 127
• Professor: Nicholas Coops

Document Summary

Continuation from last class (electromagnectic spectrum part 2) 3 characteristics: wavelength: the length from one peak to the next peak, frequency: how many times a wavelength goes through this window in one second, energy: shorter wavelength = more energy. As the wavelengths gets longer, the frequency gets shorter. There exists a direct relationship between how hot something is and how many photons the object is producing. There are 3 types: near infared, far infared, mid infrared. Electromagnetic spectrum (longest wave to shortest wavelengths: radio waves, microwaves, infrared, visible light, ultraviolet, x-ray, gamma ray. The shortest wave length we can see: violet. The longest wave length we can see: red. So when photons come through our atmosphere and hit a surface, 3 things can happen: Some chemicals absorb photons, and some chemicals don"t. Take a look at a table or desk. Some photons are being absorbed by this table (because of the pigment in this table)