To make your simple pinhole projector, grab one of the card stocks, fold it in half, and cut a small 1-inch (or 2-inch) hole at its center.

Turning your smartphone into a sort a budget holographic projector is much easier than you’d expect, and it’s a fun project if you find yourself bored enough. We rarely advise you to drop ...

How to build a pinhole projector for the Ring of Fire eclipse: Pinhole projectors or pinhole cameras are very simple devices that use a tiny hole (aperture) instead of a lens to project an ...

How to turn your smartphone into a simple holographic projector Turning your smartphone into a sort a budget holographic projector is much easier than you’d expect, and it’s a fun project if you find ...

Turning your smartphone into a sort a budget holographic projector is much easier than you’d expect, and it’s a fun project if you find yourself bored enough. We rarely advise you to drop everything ...

A YouTuber tech wizard, who specializes in short instructional videos, has designed an easy-to-make plastic contraption that allows you to project 3D holographic videos that float directly above your ...

An curved arrow pointing right. It's really simple to build a projector for your smartphone to be able to project the same types of holograms seen in Star Wars and other movies. Here's how! The ...

The total solar eclipse will take place the morning of Aug. 21. Along with eclipse-viewing glasses, another simple and safe way to view the eclipse is with a box pinhole projector. It is easy to ...

How to make a pinhole projector from a cereal box to safely view the total solar eclipse. You don't need fancy equipment to watch the celestial event.

If your approved solar-eclipse glasses didn’t come in time or the store is sold out, it’s not too late to safely see the eclipse.