Did you think of a question that could be studied, or make an observation
that was interesting or unexpected? You should send it to the Question
board!
Discuss some of these questions with the people in your group:
If you wanted to use solar heating to keep your house warm, would it help
to use large converging lenses as windows? Would there be any
point to using diverging lenses?
The heating coil of an electric stove gives off a lot of energy in the
form of infrared light. You can detect it with your hands and face,
and can make shadows that you can detect this way. Discuss how you
could use the liquid crystal sheet to show
that the infrared light is reflected by a mirror and focussed by a lens.
Would glow-in-the-dark paper work, too?
The blank parts of a newspaper will turn yellow if you leave it in the
sun all afternoon. Design an experiment to show that this is caused
by light (instead of some other aspect of being outside or elapse of
time).
Design another experiment to test the possibility that ultraviolet light
is an important cause. If the sun is shining, you might try
doing the experiments!
Please send
us your discussion of two of these questions. Don't forget to tell
us who is in the group.
If there is something that you don't understand about light energy,
Ask
us! Please note that the activities in this section are written up (in
slightly different form) in the manual (in the Light Energy section).
This is the end of this section. Summary of the Virtual Workshop on Light