Make Quantum Dots (Cadmium Selenide Type)

This experiment uses toxic and carcinogenic reagents and directly handles extremely hot liquids. Gloves, protective clothing and a fume hood should be used. This should be performed by, or under the direct supervision of, an experienced chemist. Greetings fellow nerds. In this video we’re going to make cadmium selenide quantum dots, a type of nanoparticle […]

Could We Terraform Mars?

Thanks to LEGO – presenting LEGO City – for their support of PBS Digital Studios. Humanity’s future is glorious. As we master space travel, we’ll hop from one lifeless world to the next. Life will blossom in our path and the galaxy with shimmer with beautiful Earth-like orbs. Hmmm… maybe. This won’t sound so far […]

Michio Kaku: The Universe in a Nutshell (Full Presentation)

My name is Professor Michio Kaku.  I’m a professor of theoretical physics at the City University of New York and I specialize in something called string theory.  I’m a physicist. Some people ask me the question, “What has physics done for me lately?  I mean, do I get better color television, do I get better […]

This Is the End of the Silicon Chip, Here’s What’s Next

Electronics keep getting smaller, and it’s all thanks to electric switches called transistors. When these little fellas replaced vacuum tubes, computers went from the size of entire rooms to merely the corner of a room. In the 60-odd years since, transistors have kept shrinking, scaling down and powering up our electronics with them. But many […]

A Polarizing Discovery About the Big Bang!

Light is a wave, and as it travels it does its “waving” along a certain direction – its polarization. Polarization, among other things, heavily influences the way light bounces and scatters – that’s why horizontally polarized light reflects off of a lake or car windshield, which in turn is why sunglasses with a vertical polarizing […]

How Black Holes Kill Galaxies

Thanks to Brilliant.org for supporting PBS Digital Studios Black Holes are really only dangerous if you get too close Who am I kidding ? It turns out that they may be responsible for ending Star formation across the entire Universe When we first realized that Black Holes could have masses of Millions or even Billions […]

Spaceships pushed by LIGHT – the future of space travel?

DIANNA COWERN: This episode is brought to you by Squarespace. Squarespace, build it beautiful. Imagine a spacecraft with a huge, shiny sail attached, like a kite, accelerating through space. But there’s no wind in space. This sail ship is pushed by sunlight. Think about it. Photons, or particles of light, have no mass, and yet […]