http://sites.science.oregonstate.edu/physics/coursewikis/ph111/ 2020-01-25T23:16:18-08:00 http://sites.science.oregonstate.edu/physics/coursewikis/ph111/ http://sites.science.oregonstate.edu/physics/coursewikis/ph111/lib/images/favicon.ico text/html 2015-07-14T11:47:43-08:00 http://sites.science.oregonstate.edu/physics/coursewikis/ph111/doku.php?id=days:fall2009daybyday:fall2009day6:midtermpreparation:start&rev=1436899663 To prepare for the midterm on Tuesday, we went over the powerful ideas that we have developed about light and shadows. 1) A light source projects light in many directions. The evidence that the students have for this phenomena are the initial drawings they drew in the diagnostic questions, the observations they made when playing with an object in front of a light source (shadows were created), and also the simple fact that they can see everything around them. 2) Light travels in a straight line …