One perennial demonstration for grade school science is the pinhole camera. A small hole functions as a lens. Yep, it's cheap, but you don't get much light and you can't zoom, so it's just a little bit limited for practical photography.
Been there done that, right? But I'll bet you didn't go making the camera itself out of photographic paper. Then you get this (as found at Max Power).
No comments:
Post a Comment