We see light all the time, in fact, light is the reason we can see at all. As a species, we associate dark with danger and light as being good for us. How often have you thought to understand the good (in this case light) around you? Light is measured on units of waves. Light is a form of energy that moves in beams. Light waves are made up of energy in the form of an electric or magnetic field. Light from the sun travels an average of ninety-four million miles to reach Earth. That is a bit of a trip, isn’t it? The light you see from the sun left eight minutes before you see it. Understanding light, in general, is interesting, but looking at how light reacts with various things around us, is even cooler. Light can be bent and focused to do work for us. Light is can actual be used as a tool.
The really spend a great deal of time trying to help student visualize the concept of each form of energy.