[pvelez (Pete)]

My 11 year old son is doing a school project on the inverse square law.

I have attempted to demonstrate how this works with a camera and my lightbox. but no matter how I try to play with different distances and camera settings, Maxim just won't play ball and give me the right result.

I am sure I am doing something dumb - doubtless there is a uniform stretch that I need to turn off.

Any suggestions? Of course the project is due tomorrow!

Pete