Period 1 - Light

For homework last night, we had to design an experiment including a lightbulb, a socket, an exacto knife, a piece of cardboard, and a wall. The three hypotheses we came up with in class were, one ray fans out, the light will spread out everywhere, and it varies for the various bulb strengths. My group decided to test the second hypothesis. We put the light bulb into the socket, and cut a hole in the cardboard with the knife. We turned the light on and put the carboard over it. The results were that the light fanned out. The hypthesis was proved.





During the class discussion, we talked about the results of our experiments. On the white board, Mr. Finley drew how the light fans out through the hole in the carboard. The main points of the discussion were that the the light on the wall is bigger than the hole in the cardboard. The other point that we discussed is that if there were no sides of the cardboard the light will go in all directions. The light will go all of the directions it can reach. Also, light on the wall as the surface gets farther away.

I found this link that explained the concept a little more: http://www.accessexcellence.org/AE/AEC/CC/vision_background.php

TR