Thursday, July 23, 2009

The old tablecloth trick by Paul Hewitt

Paul hewitt demos, using humor, inertia and physics pulling a tablecloth out from under a table full of plates and glasses and not moving or breaking anything.

The light bulb history may inspire you

The journey for creation of light bulb is shown on this video.

Collection of experiments using a Van de Graaff generator

"This is a collection of experiments using a Van de Graaff generator.

The generator uses a belt and two rollers to build up a charge in the dome on top. The electrons will jump from the dome to reach a grounded object. Since like charges repel one another, objects placed on top of the dome will become charged and then be repelled.

This is the same machine sometimes used to make someone's hair stand up in classrooms or in science centers."
From: You tube descripion video

Geology formation of a basin trap oil

Oil is a very precious natural resource; this video shows how oil is stored in a trap formed by tectonics forces.

Magnet levitates in a plate of pyrolytcs graphite

Pyrolytcs graphite is a diamagnetic material, which means that a magnetic field will be repelled by this material. Thus the magnet floats

Slow-motion Rubber Band Trick: that is Amazing!

A simple science trick you can do at home, using two rubber bands and a CRT TV screen. The TV screen works as a stroboscopic light, and when the frequency of rubber band is near the TV vertical frequency the rubber band seems to moving in slow motion.

Sodium Acetate Slow Crystalization

"A single seed crystal was added to the saturated sodium Acetate solution while at 30C. Omnidirectional needle-like crystals radiated outward from the seed on contact at the solution's surface."
From: youtube video description