Refraction of Light
Season 2 Episode 203 | 28m 29s Video has closed captioning.
Light energy travels in straight lines and in waves. When light strikes a plane or a flat surface, it reflects in a manner that is predictable. For example looking directly into a mirror provides a reflection that is straight back from the source. However if light strikes the plane surface mirror on an angle, then it will bounce of with an equal angle.
Problems Playing Video? | Closed Captioning