AS101 Study Guide - Final Guide: Metallic Hydrogen, Nebular Hypothesis, Plate Tectonics
Document Summary
Light has properties of both waves and particles. Frequency (f): number of peaks that pass through a location every second. Changing wavelength or frequency will have the inverse effect on the other example: increasing wavelength will decrease frequency. Different colours associate with different wavelengths (and correspond to different energy levels and frequencies) The rate at which an object is moving towards or away from us is called radial velocity. Two objects are getting farther from each other: 1. emmision-> the sun: absorption-> black t shirt, transmission-> light passing through, reflection/ scattering-> the moon, a mirror. If you heat up object, you"ll produce electromagnetic radiation (including visible light) If the object is dense: it will emit a full spectrum. If the object is thin (gas): it will produce light at certain colours (certain wavelengths) Hot, dense objects emit a perfect spectrum of light.
