How To Bend Light With Your Finger

how does the light have to enter the glass: a) to produce a large amount of bending? b) for no refraction to happen?

a) How can you bend light away from the normal? b) How must light travel away from the normal?

The bending of light about corners of an obstacle is called

Take a pencil sharpened at one end and press it between your fingers. Which end will hurt more and why?

When you walk on a woolen carpet and bring your finger near the metallic handle of a door an electric shock is produced. This is because

Why does the skin of your finger shrink when you keep your hand in water (soap solution) for a long time?

Which of the following lenses will bend the light rays through largest angle?