4/12 Clyde

Today in class, we answered questions about what could reflect light and what we would see of an apple in a completely dark room. From this we learned that all of the objects listed could reflect light because they were all visible things, meaning that they reflect light to our eyes, which is why we can see them. We also learned that where there is no light, there is no reflection of light, and as a result we cannot see anything in complete darkness. We then completed a brainbuster in which we had to design the shortest pipeline that we could, connecting two points with the requirement that the line had to come into contact with the river. From this, we found that the shortest line was made by the lines that made equal angles with the river on each side, which can be drawn by drawing a line from one point to the other point's reflection over the line they have to contact. We found that this is the way that light travels when it reflects off of a shiny surface, such as a mirror. Armed with this knowledge, we then did a lab in which we set up four mirrors at such angles that a laser pointer could be shone on one, bounce off all four mirrors, and hit a target. The homework is to answer questions on the Reflection and Refraction reading packet that we got.

QOD:
The brainbuster had to do with our reflection lab in that the method we used to find where the shortest pipeline could be built was the same method in which one could find the path of light when bouncing off of a reflective surface. Knowing this, we found that we had to set the mirrors in such a way that the light hitting the first mirror and bouncing off in a vertical angle would be directed towards the second mirror, which would do the same to the third and the fourth.