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

Get your Action Lab Box Now! Source on negative Kelvin: 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: My Other Channel: For more awesome videos checkout: Darker Than Vantablack—Absorbs % of Light Amazing experiment actually makes black fire Crushing My Own Hand In a Hydraulic Press—Crazy Experiment on My Brain What Does a 4D Ball Look Like in Real Life? Amazi