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Posts tagged magnet

November 8, 2011

 

Inside a hard disk drive

Behind The Scenes Of Saving

We click 'Save' constantly, but what's actually going on when we do?

April 16, 2009

 

Beach front view of ocean

Hills in the Ocean

Around New Guinea, there's a watery hill almost two hundred and fifty feet high. This isn't a hill on the ocean floor, but a hill on the ocean's surface.

December 6, 2005

 

When North Goes South

On a previous show we discussed how, every 250,000 years or so, the north and south poles switch places. Not that the places themselves move, rather, the entire magnetic field of the earth flips around, resulting in the pole we now call north being on the southern tip of the planet, and vice versa. Why does this happen? Learn more on this Moment of Science.

September 27, 2003

 

Osmosis and Applesauce

This process is called osmosis; it dilutes the sugar-water inside the cells. But all the water coming in raises the pressure inside the cells so that eventually, the cell walls burst.

September 27, 2003

 

A Static Fly Trap

The hope is that as the fly walks across the surface, its little body charges up, allowing poisonous spores to stick to its body like metal shavings to a magnet. If this happens, then soon enough, the fly will walk no more.

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