AST201H1 Study Guide - Midterm Guide: Photosphere, Redshift, Flashlight

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

Document Summary

Keplers 3 laws: - a) planets movie in elliptical orbits around the sun: planets sweep out equal area as they move in equal time, planets move faster when closer to the sun, and slower when far from sun. Copernicus- sun centered model- gave to tycho brah to find solution to make sun centered model. Galileo- sun centered model 1) moon has flaws, 2) stellar parallax, 3) jupiter has other things orbiting it. The weaker the gravitational pull between the two objects are. Newtons version of keplers 1st and 2nd law, and him extending kepler"s third law. Atmospheric drag- friction and how things can blow up, because of it, things. Escape velocity- 40 000km/h, or 11km/s every required to leave earth . Gravity causes tides: there are daily 2 high tides and 2 low tides in earths rotation every day. Radio waves, microwaves, infrared, visible light, ultra violet, x-rays,