Physics: Studying Never Ceases

So tomorrow I have a physics exam, and part of the exam is on optics. While I must say that optics have not been my favorite subject in physics, I do enjoy it more than when we first started. I even created a quick ray diagram for fun:

Now I must return to studying!

P.S. I found this photo on Flickr today when I was searching for physics photos (yay! I'm not the only one), and I about died laughing! Here it is: Elephant.