The white and red stitched round blazing through diamond dust headed right for its leather home.
Curveballs start off at one height, one velocity, one direction. You see it, prepare for it, make adjustments to your position to make contact with it, and then it does what every good curveball does. It drops.
The thing about curveballs is you don’t know it’s a curveball till it’s, well, curved. Changed its direction, dropped a few inches, thrown you off your game. At that point there’s nothing you can do to change its direction or make it do what it seemed like it was doing before.
Once the curveball has revealed itself to be the curveball you were not expecting, you have a choice.
You can keep your position and go out swinging, maybe get lucky and tip it off.
Or, you can change positions, drop your chin, and go in…
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[Steven Dufresne] of Rimstar.org is at it again with another very functional science experiment. This week he’s showing us how he made a large electrostatic motor, also known as a Corona Motor.
A Corona motor makes use of a cool
phenomenon called the Corona discharge, which is the ionization of a fluid
(in this case, air) surrounding a conductor that is energized. He’s done other high voltage experiments that take advantage of this, like his Ion Wind propelled Star Trek Enterprise!
The motor works by using an even number of electrodes on the motor, each electrically charged; positive, negative, positive, negative, etc.
Because each electrode is the opposite charge, they want to repel each other — but since the cylinder is electrically insulated, the charges have no where to go — instead the cylinder begins to rotate as the charges attract back and forth — when a positive charge on the…
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