1. Ultra HD 4K provides superior visual quality：Enjoy 4K Ultra HD resolution with this portable mini projector, delivering crystal-clear images and incredibly sharp details. Transform every home ...

Enter overhead projectors, film strips, and of course, Apple's brightly-colored Mac computers. From wooden pencil sharpeners to those blue calculators, here are 12 nostalgic pics of overhead ...

Ben Rimes, Director of Technology and School Improvement at Coloma Community Schools (CCS), shared many of the technological ...

[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 ...

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 ...