Staff Writer It’s 9:30 a.m. on a Tuesday morning, and the third-graders in Doug Keddie’s classroom are practicing their time-telling skills. With their desks in a ...
They will transform this two-dimensional star field into a three-dimensional star field by shining light from an overhead projector across the room. Attach each Styrofoam ball to the end of a ...
[Joel] wanted a huge-screen TV on the cheap, so he converted an overhead projector to something he can use with his XBox. Using a bare LCD panel with an overhead projector is a decades-old hack ...
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