i am looking for this special paper where you can cast shadows of objects on it and

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mjellybean1889m

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then "develop" the paper? this paper is blue, and you put rocks and stuff on it in the sun, let it be for an hour and then you put the paper in water, and the rock shadows come out white i think. does anyone know the name of the paper and where i can get it??
 
sun sensitive paper

i just did a google search for it, and it turned up a lot of results.

that stuff is fun! :)
 
You are looking for light-sensitive paper. It's widely available. Here's one source: http://www.amazon.com/gp/product/0811852636

And another: http://www.stevespanglerscience.com/product/1354

The Discovery Store (related to the Discovery Channel on TV) where I live carries it, too, as do other science stores and stores geared toward teachers.
 
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