Powers of Ten • 1977

4:51

…or why we live on an onion made of magma.

Physics

92:48

Ninety years after the historic double-slit experiment, the quantum revolution shows no sign of slowing. Join a vibrant conversation with renowned leaders in theoretical physics, quantum computation, and philosophical foundations, focused on how quantum physics continues to impact understanding on issues profound and practical, from the edge of black holes and the fibers of spacetime to teleportation and the future of computers.

World Science Festival • Physics

57:59

Hannah is going the other way by asking whether everything could, in fact, be smaller. But going smaller turns out not to be much safer... First, we shrink the Earth to half its size - it starts well with lower gravity enabling us to do incredible acrobatics, but things gradually turn nasty as everyone gets altitude sickness - even at sea level. Then we visit Professor Daniel Lathrop's incredible laboratory, where he has built a model Earth that allows us to investigate the other effects of shrinking the planet to half size. The results aren't good - with a weaker magnetic field we would lose our atmosphere and eventually become a barren, lifeless rock like Mars. In our next thought experiment, we shrink people to find out what life is like if you are just 5mm tall. We find out why small creatures have superpowers that seem to defy the laws of physics, meet Jyoti Amge, the world's smallest woman, and with the help of Dr Diana Van Heemst and thousands of baseball players reveal why short people have longer lives. Lastly, the Sun gets as small as a sun can be. We visit the fusion reactor at the Joint European Torus to find out why stars have to be a minimum size or fusion won't happen. And if our Sun were that small? Plants would turn from green to black, and Earth would probably resemble a giant, frozen eyeball. Which all goes to show that size really does matter.

S1E2 • Size Matters with Hannah Fry • 2018 • Physics

51:42

Planet Earth shrinks to half size causing altitude sickness and a cosmic disaster, the sun gets as small as a sun can be, turning Earth into a frozen mud ball. We also see what happens to a man who shrinks to the same size as a wasp.

S1E2 • Size Matters • 2019 • Physics

82:27

Albert Einstein and Stephen Hawking were revolutionary thinkers who changed everything we know about our universe, and using the latest discoveries, experts explore the connections between these two great minds.

2019 • Physics

5:16

Particles come in pairs, which is why there should be an equal amount of matter and antimatter in the universe. Yet, scientists have not been able to detect any in the visible universe. Where is this missing antimatter?

TED-Ed • Physics