PCS 181 Study Guide - Midterm Guide: 30 Foot Fall, Radial Velocity, Emission Spectrum

• School: Ryerson University
• Department: Physics
• Course: PCS 181
• Professor: Margaret Buckby

Document Summary

The scientific method sept6/11: observation, hypothesis, experiment, conclusion, reproducibility. & is falsifiable can be proven wrong & replaced with better theory. Starlight: the star"s temperature, chemical composition, motion, pressure, distance, magnetic fields & etc. Light: mutually perpendicular oscillating electric & magnetic fields; moves in wavelike pattern at a speed of c = 3 x 108 m/s. Wavelength, : distance between peaks of wave. 1 nanometer = 1nm = 1 m = 1 x 10-9 m = 10-9 m. Red = 700 nm = 700 x 10-9 m = 7 x 10-7 m. Violet = 400 nm = 400 x 10-9 m = 4 x 10-7 m. Yellowy-green = 550 nm = 550 x 10-9 m = 7 x 10-7 m. Photons: bundles of energy light as a particle. Gamma rays (nuclear) x-rays (deform) ultraviolet (blind) infrared (heat) radio waves. Frequency (how often happen during certain time period) 13.