Hybrid Car – More Fun with Less Gas

a question about magnets

register ::  Login Password  :: Lost Password?
Posted by on September 17, 2003, 10:24 pm
 
Is there any material that can defeat a magnet's magnetism? Someone once
told me mica will do it. Just curious.
Mark



Posted by on September 20, 2003, 12:41 am
 


Ok. Let's say I have a bar magnet. Is there any material I can wrap the
magnet in so the magnet won't attract anything. I don't mean wrap it with
so much material the distance becomes the reason why.
I hope this time I'm making more sense. BTW, what is Mu-Metal?
Mark



Posted by Jack on September 20, 2003, 12:59 am
 "mark_digital©" wrote:

http://www.wikipedia.org/wiki/Mu-metal

Posted by on September 20, 2003, 1:39 am
 

temperature.

Ok I checked it out. Long long time ago I attached two bar magnets
on opposite ends of a stick with a nail in the center of the stick. I held
a bar magnet so it's like pole was facing the magnets on the stick.
I thought when the stick rotated the stationary magnet and the stick
magnet would repel each other and then keep the stick turning. What
happened instead was as the magnet on the stick approached the
stationary magnet it started to repel it too soon and the rotation stopped.
I thought if I could wrap both magnets they would repel each other
at the optimum time.
Waddya think?
Mark



Posted by Steve O'Hara-Smith on September 20, 2003, 6:36 am
 On Fri, 19 Sep 2003 21:39:56 -0400

M> Ok I checked it out. Long long time ago I attached two bar magnets
M> on opposite ends of a stick with a nail in the center of the stick. I
M> held a bar magnet so it's like pole was facing the magnets on the
M> stick. I thought when the stick rotated the stationary magnet and the
M> stick magnet would repel each other and then keep the stick turning.
M> What happened instead was as the magnet on the stick approached the
M> stationary magnet it started to repel it too soon and the rotation
M> stopped. I thought if I could wrap both magnets they would repel each
M> other at the optimum time.
M> Waddya think?

    I think you are trying to make a perpetual motion machine - you
can't do that. If you use an electromagnet for the fixed magnet and pulse
it appropriately you will have a crude electric motor.

--
C:>WIN                                      |     Directable Mirrors
The computer obeys and wins.                |A Better Way To Focus The Sun
You lose and Bill collects.                 |  licenses available - see:
                                            |   http://www.sohara.org/

This Thread
Bookmark this thread:
 
 
 
 
 
 
  •  
  • Subject
  • Author
  • Date
please rate this thread