Experiment 1

Needed:

- 2 flashlights
- 2 books
- 4 other objects

A Shine with 1 flashlight on the books from one side. (see picture).
Sketch the shadow.

B Shine with both the flashlights on the books from one side (see picture).
Sketch the shadow.

C Repeat the experiment with the other objects.

- When did you see the shadow overlap?

- Do you now know which person was right? Write it down in the Forum