AST201H1 Study Guide - Midterm Guide: Length Contraction, Special Relativity, Dark Matter

59 views2 pages and 37594 others unlocked
AST201H1 Full Course Notes
AST201H1 Full Course Notes
Verified Note
24 documents

Document Summary

Astronomy midterm review sketch of look back time : the further you look, the further in time you are looking. Dark energy and dark matter: it was first observed through rotation curves. Speed of light : constant and invariant. The fact that everyone agrees of law of physics then weird stuff happens: length contraction, clock dilation etc . Issue of the twin paradox: but there is a solution to it. Seems like a paradox but it"s not. Two twins traveling shows that what one sees is not necessarily what"s happening. Based on the fact that light takes time to travel while the twins travel. The twin that is moving is young because clock runs slower when moving. Gravity: as a way to introduce general relativity. 4 forces of nature. Newton"s law of motion and law of gravity (classical physics) In general relativity: anything with mass bends space time. Gravity is a force (newton) or spacetime curvature (einstein)

Get access

Grade+20% off
$8 USD/m$10 USD/m
Billed $96 USD annually
Homework Help
Study Guides
Textbook Solutions
Class Notes
Textbook Notes
Booster Class
40 Verified Answers

Related Documents