PH 111 Wiki activities:light:powerfulideaslight http://sites.science.oregonstate.edu/physics/coursewikis/ph111/ 2020-01-25T23:42:52-08:00 PH 111 Wiki http://sites.science.oregonstate.edu/physics/coursewikis/ph111/ http://sites.science.oregonstate.edu/physics/coursewikis/ph111/lib/images/favicon.ico text/html 2012-08-17T11:50:23-08:00 activities:light:powerfulideaslight:start http://sites.science.oregonstate.edu/physics/coursewikis/ph111/doku.php?id=activities:light:powerfulideaslight:start&rev=1345229423 Powerful Ideas about Light, Shadows, and Pinhole Explorations (and the evidence to demonstrate them) Navigation Links Light Activities Sun/Earth/Moon System Phenomena Fall 2009-Day 4 1. Light travels outward in all directions from a light source (light dispersed on screen from clear bulb with vertical filament)