The projector that most of today’s adults would consider most synonymous with their days at elementary, middle and high school is most likely the overhead projector. Who doesn’t remember the thrill of ...

[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 ...

The projector will be great for outdoor movie nights, but it lacks one essential feature. It doesn’t make popcorn. Larry ...

A Brief History: Roger Appeldorn created a machine that projected the image of writing on clear film in the early 1960s, while working at 3M, according to the company’s recount of the invention of the ...

i figured so, and so did sine~language, who sent us this link last night to a tom’s hardware article on building a sweet video system out of an lcd monitor and an overhead projector. more ...

Both cotton swabs are simultaneously inserted into opposite ends of a long glass Graham’s Law apparatus and placed on an overhead projector. A white ring of solid ammonium chloride forms where the two ...

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 ...