Since no one answered, and I really need help:
So I am doing this science experiment about light. I chose to do one where you put a pencil in a glass of water and the light makes it look like it's bending. There is a chart of measurements that you need to fill out and I have no idea how to get them. I know you are gonna use a protractor and measure different stuff about the pencil but can someone please explain to me how to fill out this graph:
Angle of Incidence |Air|Water|Glass
In Air (or water,
or glass)
|__________________|___|____|_____
|__________________|___|____|_____
|__________________|___|____|_____
|__________________|___|____|_____