Sunday, December 14, 2008

happy holidays with physics

While I was watching TV, I glanced over at the Christmas tree my mom decorated. Because of the huge mess Christmas tree make, my family has an artificial tree. The tree originally came with lights already on the tree. After a few years, some of the lights stopped working. I recently realized that this was due to a string of Christmas lights that was arranged in a series circuit. The result: when one bulb goes out, the others on the string stop working as well. My mom replaced the lights with a new string that's arranged in a parallel circuit so that if one of the bulbs go out, she won't have to replace all the lights again.

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Sunday, December 7, 2008

rear view mirrors

On Friday, my friends and I went to the Aloha Stadium to watch Iolani's football team compete against Radford for the div II state title. Iolani beat Radford 35-20. After the game, we decided to go to Pearlridge to get dinner and catch a movie. Matt was driving in front of me and Shantha while we were leaving the stadium. While we were stuck in traffic, we remembered that if Matt looked into his rear view mirror, we would be able to make eye contact with him, and we would both be able to see each other. We learned this in physics in the past week and this occurs because of the angle of incidence and the angle of reflection. Shantha and I began to jump around in the car, and waved our arms to try to get Matts as a good driver should, he kept his eyes on the road, and didn't see us in his rear view mirror.