YouTube user magx1 builds a lot of home-made gas lasers, running electric current through sealed tubes filled with various gases. When you do that, you get the gas atoms all riled up and their electrons absorb energy. Eventually, that energy gets released in the form of directional, highly focused light—a laser. There's a bit more to it than that, but you've got the idea.
One type of laser magx1 builds is called a carbon dioxide laser, though it actually contains a mixture of carbon dioxide, nitrogen, hydrogen and helium. In this video, the carbon dioxide in the mix is coming from his own breath.
By exhaling into my 'supply' balloon, I was able to get pretty good results considering! Unlike a 'proper' laser mix of CO2, N2, and He; the 'breath' trick appears to have a much narrower pressure range over which lasing will occur. But I like it anyway - it doesn't get much more DIY than this!
“To the world leaders and those in power, I would like to say that you have not seen anything yet. You have not seen the last of us, we can assure you that. And that is the message that we will bring to the World Economic Forum in Davos next week.” In the Swiss city […]
This is some pretty amazing and highly rare video — seldom do you get footage of five, count ’em FIVE, California mountain lions all hanging out together. The big cats were captured on home surveillance video, in a rare gathering of the typically solitary critters.
We’re all guilty of constantly staring at a variety of screens throughout the day. The only problem is that the blue light that’s emitted by most electronics — and even energy-efficient lightbulbs — is notoriously bad for our eyes and, subsequently, our health. Here are three glasses that offer superior protection for your eyes both […]
From OneDrive to Slack, there are numerous ways to store files online. Because many platforms offer a certain amount of free storage, it makes sense to mix and match. However, spreading your files across multiple apps can make things very confusing. Rethink Files offers a simple solution. By connecting to all your other cloud storage […]
Winter can be a difficult time of year for golfers. Between the freezing temperatures and frequent snow showers, maintaining your handicap can seem almost impossible. When the fairways are frozen solid, the PhiGolf simulator lets you practice at home. This device captures every nuance of your swing to provide virtual coaching. Better still, you can […]