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Why no one has measured the speed of light

AdultsData ScienceEducationScience...
Physics students learn the speed of light, c, is the same for all inertial observers but no one has ever actually measured it in one direction.
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Do You Expand With The Universe?

AdultsEducationScienceSpace...
As the universe expands, is said to "stretch" photons. But if it stretches photons, does it also stretch molecules, galaxies and you? A portion of this video was sponsored by Salesforce.
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Why Gravity is NOT a Force

AdultsEducationScienceSpace...
The General Theory of Relativity tells us gravity is not a force, gravitational fields don't exist.
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The Great Acceleration

AdultsPhysicsScienceWorld...
We’re in the middle of a rapid, unprecedented, and world-changing increase in the intensity and scale of human activity on this planet.
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3 Perplexing Physics Problems

AdultsMediaPhysicsScience
Why does shaken soda explode? Does ice melt first in fresh or salt water?
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How to STEAL Elon Musk’s Space Car

AdultsPhysicsScienceSpace...
What would it take to steal the only road car currently crossing the cosmos? Kyle outlines a villainous plan that he totally doesn’t approve of.
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Why Don't We Have Water Powered Cars Yet?

AdultsCreativityIndustryScience...
Today we're dipping our toes into the engineering and physics behind water-powered cars!
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Making Liquid Nitrogen From Scratch!

AdultsEducationPhysicsScience...
I used a nitrogen membrane and Stirling cryocooler to liquefy nitrogen out of the air. For this video I partnered with Starbucks to celebrate their Nitro Cold Brew.
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Can You Swim in Shade Balls?

AdultsEducationIndustryScience...
I bought 10,000 shade balls and tried to swim in them. They appear to act like a non-Newtonian fluid: rigid under high shear stress, but they flow like a liquid under low shear.
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World's Lightest Solid!

AdultsConstructionMediaScience...
Aerogels are the world's lightest (least dense) solids. They are also excellent thermal insulators and have been used in numerous Mars missions and the Stardust comet particle-return mission.