What Happens if You Focus a 5 W Laser With a Giant Magnifying Glass Negative Kelvin Temperature

Get your Action Lab Box Now Source on negative In this video I show you what it means to have negative temperature by focusing a laser beam down to a single point. I show you what happens if you try to focus a light down to a single point, then I show you how a laser is different due to population inversion. Follow me on Twitter: Facebook: