I once saw someone playing music by breaking laser beams with his hands. I thought it was fake, but discovered it was real and made my own laser harp.
Need a bright surface for your projector? Get high gain at low cost using house paint and sandblasting beads.
OK, so it’s not, actually.
In this project, we’ll build a small, vertical-axis wind turbine, or VAWT for short.
I’ve always wanted to take pictures through a microscope so I can see what tiny screws and coins look like when magnified, but I don’t have the money to purchase that kind of equipment.
For this tutorial, you will need (or at least it is helpful to have) a knowledge of the Python programming language.
What do you do with the toilet brush right after you use it?
It’s rare to get very low temperatures where I live, but last winter the temperature was low enough to freeze and burst pipes.
The first spectroscopes used glass prisms to split light into colors, but Fraunhofer found that an array of closely spaced wires had the same effect. Today we call these arrays of tiny slits diffraction gratings.
Sometimes running a handmade biz can get pretty pricey.
Collin Cunningham teaches you how to etch your own circuit boards using the photoengraving method.
