The Week of the September 14th

This Week in Mr. Finley's class i learned many new ideas about light. I learned these ideas by testing many experiments. One of the biggest experiments about light we had was the dark room experiment. My hypothesis was that in a dark room our eyes would adjust to having no light in 5 minutes. Our experiment was we went under Mr. Finleys desk in the complete darkness. After 5 minutes if you could see what the sign on the wall said your hypothesis would be right. My prediction was after 4 or 5 minutes i would be able to see the sign. When i did my experiment i could see nothing. My conclusion was that you cant see in the dark because when you see, the pupils expand in your eyes to bring in light and without light this cant happpen. It is important to know this idea so if you decide to go somewhere or do something at night you wont hurt yourself. We also learned about light rays,but we are not completely finished with that experiment.
Later in the week we also learned about laser pointers. We learned that a laser pointer flows in a straight beam until it hits a solid object. We are all able to see the dot because the dot hits onto the wall and bounces in many directions into our eyes. This concept is also the same with light rays. To end my post we learned that the laser pointer travels in a straight beam by clapping flour with chalk earsers by the beam showing the beams fullness. This works because flower particles are opaque enough for the beam to bounce off of into our eyes. THE END