Science Buddies: "Ask an Expert"

Hi all
Love the site. My son and I have decided to do the stealthy shapes project for 6th grade.
I can't seem to find a cardboard box like I want so I will build one.
My question is with the dimensions, I assume the 9 1/2" is the height and the 17" is length 14 1/2" wide.
My question is which end do you put the light in, Length side or width?

Thanks

Rvssts - There doesn't seem to be anything magic or critical about the box dimensions other than the procedure states that the upright cylinder or folded targets not touch the lid when closed or touch the flashlight or sensor. That would suggest that the light and sensor be placed on the side that has the 9.5" dimension. This position should also mean that the longest dimension of 17" is the height that the 8.5 inch target stands up in. Hope this is clear.

Probably the ideal container for the experiment is a cylinder about 6" in diameter and 14" to 18" tall. In fact, you might want to construct a cylindrical container lined with matte black construction paper and compare readings for an additional comparison in your experiment.

Rick Marz

Thanks I was confused because the picture doesn't really depict this. Also it has you move the paper objects around to get a base reading of at least 50lux I believe.