We’ve already told you before that you should never look directly at the sun during Monday’s solar eclipse. I mean, didn’t we hear that all the time growing up? But there is a safe way to watch the ...

Learn how to build a portable, collapsible, and affordable outdoor projector screen for movie nights using common tools. This video features projector screen material, red tent stakes, paracord, and ...

A large LCD is entirely unsuitable. Light (especially high intensity of the sort used for projection) makes heat. The more light that must be "filtered away" the more heat you must be able to transfer ...

Technically, this simple DIY project doesn't produce a hologram, but the results look very similar. The idea is to create a pyramid of transparent, reflective material with the point facing down onto ...