What Stephen Hawking Really Said About Black Holes
Hank explains the science behind recent reports that physics great Stephen Hawking said “there are no black holes.” There are. They’re just super complicated.
Tagged: physics
World’s 10 Most Secret Societies
Conducting their business in dark rooms for centuries and often exerting a mysterious influence… Don’t forget to have a look at #0 behind the secret door!
Fascinating Experiment: How can a copper pipe interact with a magnet?
Magnets are not attracted to copper, but incredibly strong magnets interact with copper in a pretty amazing way. If you drop a neodymium magnet down through a copper pipe it’s descent is slowed. The stronger the magnet and the thicker the pipe, the slower the fall. Take a look.
How fast are you moving right now?
“How fast are you moving?” seems like an easy question, but it’s actually quite complicated — and perhaps best answered by another question: “Relative to what?” Even when you think you’re standing still, the Earth is moving relative to the Sun, which is moving relative to the Milky Way, which is…you get the idea.
Photos to Help You Visualize Magnetic Fields (6 pictures)
Fascinating magnetic field visualization using compasses. What’s interesting is that we can not only see the pattern of magnetic fields, but the direction of those patterns via the compass arrows.
Tesla Coil and Laser Beams (2 videos)
Let’s explore the possibility of electricity without wires; experiencing the magic of wireless lighting via a Tesla coil.