Chemistry II students were welcomes to the beginning of the year by a conversation about the nature of light. Several properties of light were discussed, but they found it very difficult to actually define light. What was settled on was that light could be thought of as a particle. Therefore, it would behave much like a basketball. This reinforced as we shined a laser in a dark room. The path of the laser could not be seen until chalk dust was sprinkled above the light trajectory. What can be seen is that light travels in straight lines, much like a basketball rolling across the floor.
Action at a Distance 