AST201H1 Lecture Notes - Lecture 5: Sound, Radio Wave

• School: UTSG
• Department: Astronomy & Astrophysics
• Course: AST201H1
• Professor: Stephen Reid

Document Summary

Lecture 5: 10^1 , 10^2, 10^3 (the more the number goes up, he further it is): like 10^50 is farther than 10^1 . in meters. In other words the higher the number of the. Light years is the further it is from earth (like. Dense objects : every dense objects emit light, very much like a blackbody spectrum. Humans : (humans emit electra-red light, but also some of every other type of lights, like gama lights, ultraviolet lights) the more space you take up, the more light you give out. The higher you are from the space the hotter it will be, like the sun- super hot. If a spectrum gives out a straight line, than it is not a blackbody spectrum. You"ll find that no star is actually green" it is close to green. (your bare eye will not see green light) Low density gas in front of a black body.