And on Sunday light rests in paradox and mystery. In theory we may be uncertain, but in practice we know a great deal about light and how it behaves. Let's explore some of that behavior. Strangely enough, one thing you cannot do with light is see it. What you see are the objects that light hits.
Light can bounce off objects, like a billiard ball hitting the side of a billiard table.
And when the light hits an object, it will bounce off-be reflected at an angle exactly equal to the angle at which it hit. Try it yourself with a flashlight and a mirror. If light hits a perfectly black surface, it will not reflect at all. Instead, the light will be absorbed. This means that the light energy has all been changed into heat energy.