资讯

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.
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 ...
Introduction 00:10 Initial setting 00:50 Create Projection 01:50 Create light rays 02:21 Adjust the Blur of the Projection Hope it is useful to you Thanks for watching Subscribe!
You don't necessarily need fancy equipment to watch one of the sky's most awesome shows: a solar eclipse. With just a few simple supplies, you can make a pinhole camera that allows you to view the ...
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 ...
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 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.
You don't necessarily need fancy equipment to watch one of the sky's most awesome shows: a solar eclipse. With just a few simple supplies, you can make a pinhole camera that allows you to view the ...
Along with eclipse-viewing glasses, another simple and safe way to view the eclipse is with a box pinhole projector. It is easy to make from a cardboard box and ordinary household items.