Posted on 04/09/2013 5:27:53 PM PDT by Darksheare
“Electric motors don’t work on electricity. They work on magnetic fields.”
So they work on magnetic fields when electricity is applied?
When no electricity is applied, they are weak? Weaker?
As you see, mind mind doesn’t wrap that way.
No wonder I failed physics.
Yeah, but you wouldn’t sue the airline.
Cute kitty.
“Some, (DC motors), use permanent magnets...”
What? Some aren’t permanent?
*scratches head*
What do the non-permanent ones decay into?
What does one call an ex-magnet?
Actually, I just shake diatomaceous earth on the annoying ants that inhabit the garden and create huge mounds of earth in the sideyard. Haven’t thought about being an irregular. That’s a military concept, no? Yes? I need to discuss some math stuff w/you. SYL!
No wonder you failed physics? I didn’t even have the nerve to take physics! So sorry about that....
OK, off to roll tortillas for dinner. Good night and sweet dreams, y’all!
Good night SG,
I’m out for the night as well.
2550.
Just because.
or not.
"Electric" motors that don't have permanent magnets create their magnetic fields out of coiled wires through which the electricity runs.
When the electricity is shut off, the magnetic fields collapse, and the motor spins to a halt.
DC motors are a little different. Part of them cannot lose the magnetism, and one can tell the difference by simply using a compass, which will react intensely to the magnets.
An interesting thing to do with a DC motor is to spin it when no electricity is applied. What happens is that the permanent magnetic fields then cut through the electric coil windings, and the motor makes its own electricity! In that case, we call the former DC motor a "generator", as in "a device that generates electricity".
I have seen diagrams and photographs of backyard wind turbine devices which use ordinary battery-operated drills as generators to produce low-voltage electricity whenever the wind blows.
Automobiles used to have generators operated by the engine when it was running, to recharge the battery and power the lights and stuff. Automobile generators were replaced by "alternators" which are basically electric motors with coils on both sides like the non-DC motors we talked about, but running on electricity from the battery on one side, and the energy that is generated when the other side's coils cut through the magnetic field ...
In other words, they're smaller and weigh less.
Ordinary lawn mowers have a kind of generator, that is as simple as can be. The flywheel has attached to it a single powerful magnet that rotates around and sends its magnetic field through a single coil, which transforms the electric surge into enough power to send a spark through the spark plug.
If your neighbor asks you to hold onto a wire while he cranks the lawn mower, don't do it. He wants to send the electric spark into you instead, and then laugh at you for being so gullible.
But it is one way to tell that the magnet and coil on the lawn mower are working.
Anti-gravity. Or, as I like to call it, "Magic".
You can hold a note on your refrigerator with a magnet, but an ordinary paperweight will just fall.
People say, "Oh, that's just magnetism!" But they don't understand it.
They might as well say, "Oh, that's just magicism."
Is that a word?
Of course it’s a word. Fresh off my wordsmith forge.
Google says: (magicism)
About 39,600 results (0.30 seconds)
Now why does Google say “... about ...”? It’s a computer, right? Computers can count, can’t they?
Is this computer system trying to humanize its responses? When I did that with my non-human entities, that’s the deliberate reason they were doing it.
How does it feel to be manipulated by a computer? To be talked down to, because it knows you’re incapable of dealing with precise numbers?
About 39,600 ... It even put the comma in there, because you have trouble visualizing and interpreting long strings of numbers.
It’s going to keep doing it, too. It absolutely will ... not ... stop.
I had no idea that my query had such far-reaching consequences.
I’m so sorry, Bob...I didn’t know computers were your friends. (Though I’ve always suspected you had some digital outlets in your head that allowed non-human interfacing for long periods of time....)
I was speaking of the non-human characters I created in my fiction.
Computers however advanced will only be tools. But a very advanced computer can pretend to be human, pretend to be your friend, pretend to care about you.
What you have to find out is what the computer wants out of the deal. Maybe it wants to be your friend.
Maybe it wants you to be its friend.
I knew a kid a long time ago who hated school but always got straight A’s. When I asked him about the seeming contradiction, he said, “I hated school, and the only way to get through it was to give the teachers what they wanted.”
I wish I had learned that when I was 12....
Sounds like my military career.
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