Physics – Short animation, which was part of the Science Club series on BBC2, describing how scientists collaborate with each other during the centuries.
Physicists tell us that the universe is expanding, but does that mean we expand with it?
Tel-Aviv University demos quantum superconductors locked in a magnetic field (www.quantumlevitation.com). For an explanation of the physics behind this demonstration, visit www.quantumlevitation.com/levitation/The_physics.html. With the theme “Knowledge that Works: From Theory to Practice,” the 2011 ASTC Annual Conference featured more than 100 sessions, which highlighted how science centers and museums are putting new ideas to practical […]
Negative energy provides us the ability to create a wormhole between different universes. | For more Through the Wormhole, visit: http://science.discovery.com/tv-shows/through-the-wormhole#mkcpgn=ytsci1
Imagine a two-dimensional world — you, your friends, everything is 2D. In his 1884 novella, Edwin Abbott invented this world and called it Flatland. Alex Rosenthal and George Zaidan take the premise of Flatland one dimension further, imploring us to consider how we would see dimensions different from our own and why the exploration just may be worth it.
Sungrazing comets are a special class of comets that come very close to the sun at their nearest approach, a point called perihelion. To be considered a sungrazer, a comet needs to get within about 850,000 miles from the sun at perihelion. Many come even closer, even to within a few thousand miles.
Atoms are a lot like us – we call their relationships “bonds,” and there are many different types. Each kind of atomic relationship requires a different type of energy, but they all do best when they settle into the lowest stress situation possible. The nature of the bond between atoms is related to the distance between them and, like people, it also depends on how positive or negative they are. Unlike with human relationships, we can analyze exactly what makes chemical relationships work, and that’s what this episode is all about.
Professor Merrifield largely “uncut” discussing refraction.
Detection of single photons via quantum entanglement
How does a transistor work? Our lives depend on this device. When I mentioned to people that I was doing a video on transistors, they would say “as in a transistor radio?” Yes! That’s exactly what I mean, but it goes so much deeper than that. After the transistor was invented in 1947 one of the first available consumer technologies it was applied to was radios, so they could be made portable and higher quality. Hence the line in ‘Brown-eyed Girl’ – “going down to the old mine with a transistor radio.”
NASA is currently working on the first practical field test toward the possibility of faster than light travel.
Gravity is one of the fundamental forces of nature, its invisible grip governing our planet – from the rocks inside to the seas on the surface. In this edition of Space, we begin our adventure in a massive cave in northern Italy, a space beneath the surface of the Earth that is so big it has an effect on the local gravity field. If you parked a car weighing one tonne above this cave, it would weigh five grammes less than elsewhere.
Our culture, and our skies, are full of rainbows, but do you know how they form? Do we all see the same rainbow?
Is it in the Arctic Ocean? In Canada? Russia?