We continued our discussion of light as a particle and introduced ray diagrams. This naturally led to the discussion of shadows and how they work in terms of the particle model of light. In the lab that they started today, they are examining how to manipulate shadows and then explain them using ray diagrams. In the first part, their task was to change the size of the shadow but keep the image the same. They were then asked to draw a ray diagram explain why what they did was successful
Action at a Distance 