World’s Lightest Solid!

World’s Lightest Solid!

This is aerogel. The world’s lightest, that is least dense, solid. This piece has a mass of just 1.22 grams. That is only a few times the mass of the same volume of air, which kind of makes sense because it is 99.8% air. In fact, some aerogels are so light that if you removed…

Why Boredom is Good For You

Why Boredom is Good For You

Part of this video was sponsored by LastPass. Stick around to the end for a word from our sponsor. In a recent study participants were placed in a room for between 6 and 15 minutes. They were given nothing except a button that they knew would shock them if they pressed it. They were asked…

World’s First Car!

World’s First Car!

– I am about to drive the world’s first car. This was invented by Karl Benz, patented in 1886. Of course, this is not the real thing, this is a replica. But I’ve partnered with Mercedes to make a video about car safety. – Yeah. (laughs) – Right? There’s not a lot of safety here….

Why Are 96,000,000 Black Balls on This Reservoir?

Why Are 96,000,000 Black Balls on This Reservoir?

these are shade balls they’re being dumped into this water reservoir in Los Angeles and contrary to what you may have heard their main purpose is not to reduce evaporation so what are they really for? To find out I am visiting the largest collection of these balls anywhere on Earth at L.A. reservoir 96…

Explained: 5 Fun Physics Phenomena

Explained: 5 Fun Physics Phenomena

– In my last video I showed you five fun physics phenomena and asked you how they work. You responded with thousands of comments and some video responses. Well here are my explanations. Let’s start with the cereal because it seems the simplest but it turns out to be one of the most surprising. The…

Would You Take This Bet?

Would You Take This Bet?

I want you to consider this bet. Here’s ten dollars. This could be yours if I flip this coin in the air, you guys call it in the air. If you’re right I give you the ten dollars. If you’re wrong you give me ten dollars. I saw that coming. That’s not a good bet…

The Absurdity of Detecting Gravitational Waves

The Absurdity of Detecting Gravitational Waves

1.3 billion years ago in a galaxy far, far away two black holes merged As they violently spiraled into each other They created traveling distortions in the fabric of space-time gravitational waves in the last tenth of a second the energy released in these waves was 50 times greater then the energy being released by…

Electromagnetic Levitation Quadcopter

Electromagnetic Levitation Quadcopter

How much does this thing weigh? -Well, try to pick it up. -Okay. Alright. -Be nice to it -105 lbs -105 lbs -It consists of four motors connected up to these spinning magnet arrays and if you spin these fast enough it will actually levitate. -That’s correct. -Let’s see if we can do it Ready?…