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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? Amazing Experiment Shows Spherical Version of Tesseract How I Made an Ant Think It Was Dead—The Zombie Ant Experiment What Happens if You Open a Vacuum Chamber Under Water? And Do Vacuums Float? Can Light be Black? Mind-Blowing Dark Light Experiments! Mirror-Polished Japanese Foil Ball Challenge Crushed in a Hydraulic Press-What's Inside? Mixing the World's Blackest Paint With the World's Brightest Paint (Black 2.0 vs LIT) Is it Possible to Unboil an Egg? The Amazing Uncooking Experiment! What if You Try To Lift a Negative Mass? Mind-Blowing Physical Impossibility! What Does a Giant Monster Neodymium Magnet do to a Mouse? The Worlds Blackest Black vs The Worlds Brightest Flashlight (32,000 lumen)—Which Will Win? How Much Weight Can a Fly Actually Lift? Experiment—I Lassoed a Fly! DISCLAIMER: Any experiment you try is at your own risk
