Light energy


Light transmits both information and energy. In the preceding sections we have been more interested in the sharpness of shadow edges and the crispness of images; these are aspects of the information content. Sometimes we are more interested in the energy itself. A slide projector and a spotlight are similar in design, but they differ in that one delivers information and the other, energy. This section is about the aspects of light that involve transportation of energy.
Concentrating the energy of sunlight with a lens, we can set paper to smoldering
Pages in this section:
SectionEstimated time required
Exploring light energy 30 minutes
Light energy stored in luminescent paper 60 minutes
Light delivers energy, which causes an increase in temperature 30 minutes
Science content: light energy 30 minutes
What have we learned about light energy? 30 minutes
Another page relevant to this section:
Why study light energy?

Summary of the Virtual Workshop on Light