Collaborate Disseminate
Helium-neon lasers may be little more than glorified neon signs, but there’s just something about that glowing glass tube that makes the whole process of stimulated emission easier to understand. …read more Continue reading Lasers Al Fresco: Fun with Open-Cavity Lasers
Ever wish you could do a little target shooting in a galaxy far, far away? Well then you’re in luck, as the Star Wars inspired GlowBlaster designed by [Louis Abbott] …read more Continue reading GlowBlaster Uses 405 nm Laser To Make Its Mark
You can get a red laser diode pretty cheap these days—as cheap as £1 in fact. [Beamer] had purchased one himself, but quickly grew bored with just pointing it at …read more Continue reading Trying to Build A Communications Device With a 1-Pound Laser And a 7805
Lasers are pretty much magic — it’s all done with mirrors. Not every laser, of course, but in the 1980s, the most common lasers in commercial applications were probably the …read more Continue reading More Mirrors (and a Little Audio) Mean More Laser Power
If sharks with lasers on their heads weren’t bad enough, now China is working on submarines with lasers on their butts. At least, that’s what this report in the South …read more Continue reading Chinese Subs May Be Propelled Silently By Lasers
No matter how small you make a pair of tweezers, there will always be things that tweezers aren’t great at handling. Among those are various fluids, and especially aerosolized droplets, …read more Continue reading Optical Tweezers Investigate Tiny Particles
One of the problems with laser cutting projects is that while they look good, they often look like they were laser cut. [Timber Rough] has a wooden desk lamp that …read more Continue reading Wooden Desk Lamp Uses Unusual Dimmer
One of the first logic circuits most of us learn about is the humble flip-flop. They’re easy enough to build with just a couple of NOR or NAND gates, and …read more Continue reading This Unique Flip-Flop Uses Chemistry and Lasers
You wouldn’t think that shaking something in just the right way would be the recipe for creating laser light, but as [Les Wright] explains in his new video, that’s pretty …read more Continue reading Homemade Raman Laser is Shaken, Not Stirred
Woodworkers have always been very clever about making strong and attractive joints — think of the strength of a mortise and tenon, or the artistry of a well-made dovetail. These …read more Continue reading This Laser-Cut One-Piece Wedge Tenon Locks Wood Joints Tight