This is a video of the folks at Youtube channel The Hackensmith testing the world’s first retractable plasma lightsaber, the construction of which they featured in a build video last week (included below). The lightsaber burns at around 4,000-degrees Fahrenheit (2,200-Celsius), is powered by a mix of liquid propane and

This is a video of TheBackyardScientist experimenting with a 200-watt powerful burning laser to burn a bunch of stuff INCLUDING A ROCK, then mounting the thing to a vehicle and waving it around in the sky (after verifying there would be no planes nearby). Just look at that thing. Interestingly,