Perpetual ? motion

Quantum Levitation

Dry Ice Bubbles

How would a bigger moon look like?

The Astounding Curta Mechanical Calculator

Kinetic Sculpture Manipulates Rare Earth Magnets - amazing

Dave Johnson’s magnet machine has a lot of fascinating details:

This machine manipulates small spherical rare earth magnets. slicing one at a time from the end of a long chain, moving it around a bit, then dropping it back to re-connect at the tail end of the chain.

It also demonstrates a little snippet of science called eddy currents. Watch how slowly the magnet falls through the aluminum tube compared to falling through air: the falling magnet generates an electrical current in the tube, and that current in turn generates a magnetic field that opposes the movement of the magnet, slowing it down dramatically. See http://en.wikipedia.org/wiki/Eddy_current if you want more.

Water does that. Did u know?

2000 year old computer made of lego

Magnetic Putty

Vortex Canon

Scratch Holograms

Giro

Math + biology

engineers dig this ? :D

Whatif - Earth rings like Saturn's

Air power. Float.

Jokes?

Bubble trouble

Today's drop of science

Elevator into space

an article on yahoo about the elevator competition from NASA

Two sunsets on the same day

did you know that they have 2 sunsets on the same day?

World’s Largest Solar Project Planned for Saharan Desert

If just 0.3% of the Saharan Desert was used for a concentrating solar plant, it would produce enough power to provide all of Europe with clean renewable energy. That is why 20 blue chip German companies are gathering together next month to discuss plans and investments to create such a massive project. Both the meeting and project are being promoted by the Desertec Foundation, which is proposing to erect 100 GW of concentrating solar power plants throughout Northern Africa.

Click on the pic for more info