ASTR 100 Study Guide - Comprehensive Final Exam Guide - Sun, Orbit, Earth
20 Nov 2018
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Document Summary
If two stars differ by one magnitude, then one is about 2. 5 times brighter than the other. If their magnitudes differ by a value of two, then one is 2. 5 x 2. 5 (2. 5)^2 times brighter: greek astronomers. Interpreted as 2 bodies orbiting saturn: milky way, appeared to the human eye as a milky band of light across the sky, phases of venus, disproved the ptolemaic model. Inherited tycho"s detailed observations copernican model: published astronomia nova in 1609, contains the first 2 of 3 laws of planetary motion, laws of planetary motion, 1st, planets follow elliptical orbits. Isaac newton discovered that white light is composed of different colors: composed of many different colors, emitted, reflected, absorbed, light as a particle, light meter reading, count the number of baseballs that strike detector, light as a wave. Interstellar reddening: gives sunsets a red color, stellar structure.
