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!
The large black bear in this video was observed ambling around a Monrovia, California neighborhood last Friday morning. The bear walked through residential lawns, driveways and rested in a nearby alley.
How does an owl’s tail help it fly? To better see the role of the tail in raptor aerodynamics, researchers at the UK’s Royal Veterinary College recorded birds of prey flying through clouds of tiny helium bubbles. According to the science journal Nature, analyzing the swirling motion of the bubbles enabled the scientists to discover […]
Thirty years ago today, the Voyager 1 spaceprobe had completed its ncounters with the outer planets and was careening out of our solar system. The time came to shut off the probes’ cameras to preserve power and memory for the other onboard scientific instruments. But before engineers flipped the switch, one last photo opportunity was […]
Is it just us, or does it feel like winter hasn’t been as horrendous as usual this year? Well, stats show it’s actually been one of the warmer winters on record so far this year for many eastern U.S. cities in January and February. But, almost on cue, weather experts warn signs of a serious […]
While mobile devices are all but essential and the center of so many individual universes these days, find one person who loves their wireless plan with that type of passion. Check around. We’ll wait… Didn’t find anybody, did you? That’s because most wireless plans are designed for the convenience of the provider and will nickel-and-dime […]
In the early days of the web, everyone wanted a .com domain for their site. As a result, all the good ones got snapped up. But .com no longer has the cachet it once did. In fact, many new businesses and individuals are opting for other top-level domain extensions. One of the most memorable is […]