We started out class with what we did yesterday (shining lasers through triangles).
Yesterday for homework we had played a game that had lasers and "light splitters" in it, so we tested that out by pointing the laser at a tip of the triangle. Instead of seeing the laser split in half, we got a line on the table, but only viable when the laser wasn't touching the triangle. After that we shone a flashlight at the triangle, and there was a strange figure. The shadow had a lighter and darker spot with small rainbows on either side. But from different angles, the shadow would change a little bit. When we shone the flashlight though the side instead of the top, the shadow was a dark rectangle and a smaller , bright one inside it.
After doing that, we were told to put the materials away and discussed the ideas and hypotheses.
Someone went to the board and drew a triangle with laser beams bouncing all around in it and two beams coming out. The flashlight discussion started with showing everybody the rainbows would appear. The colors were blue, yellow, red, orange, a bit of purple and green. We talked about why the light would emit a rainbow. one hypothesis was that the lights were getting weaker and weaker and eventually, the weaker light would create the color (defusesion of light). We said the rays were somewhat similar to bouncy balls, but it didn't follow the rule of refraction, so we came up with waves.
We looked at a picture of Newton's experiment that had a white light entering a triangular prism and coming out as a laser. We said some rays bend more than others to create the rainbow because the light was slowing.
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