Journal 9/21 continued

In a completely dark room we wouldn't be able to see anything. There wouldn't be any light rays to bounce off of anything to go back to our eyes. Nothing would be visible, even though our eyes would be much more sensitive to light. Our classroom wasn't completely dark otherwise we wouldn't be able to see anything at all. For a room to be completely dark, no light rays can enter the room. We couldn't totally seal off the room and make sure no light comes in.