Links for April 24th
- MHD I: Demonstrate Magnetohydrodynamic Propulsion in a Minute – Evil Mad Scientist Laboratories
Rember the silent caterpillar drive from the movie The Hunt for Red October? The caterpillar drive was a fictional magnetohydrodynamic propulsion system. Magnetohydrodynamic (MHD) propulsion is a means of using electrical current, instead of a noisy propeller, to push a ship through the water.Surprisingly enough, a working example of this futuristic drive system is quite easy to build. Assuming that you’ve got the materials handy, you can build one in about a minute. You’ll need a strong magnet, two pieces of thick copper wire, a little dish of warm water, salt and pepper, and a regular battery.
Tags: science clubs magnets school - LED Throwies
. A Throwie consists of a lithium battery, a 10mm diffused LED and a rare-earth magnet taped together. Throw it up high and in quantity
Tags: clubs school magnets science
