For magnet lovers...

[Greysky]

ever since I was a child, magnets have held a fascination for me. I've been
collecting them ever since. It used to be that you could always scrounge
loudspeakers for Alnico magnets. Then when the newer ceramic magnets began
to be incorporated into loudspeakers, it became a challenge to remove them
from their enclosures without breaking them. Now, I have to admit, I am
having a ball collecting the new 'super magnets' - like the ones inside hard
drives. There are also cool cylindrical magnets that you can get from inside
the heads of VHS machines. My question is does anyone know of other sources
either for Neodymium 'duper magnets', or strong ceramic magnets that I may
be missing out on? Magnets like these come closest to being perpetual motion
machines we have yet to make, and I'd hate to have some just wind up into
the trash because I didn't know they were there

Thanks.!

 

[Jan Panteltje]

On a sunny day (Tue, 22 Jun 2004 08:21:58 GMT) it happened "Greysky"
<greyskynospam@sbcglobal.net> wrote in
<G_RBc.3475$Lu3.2606@newssvr25.news.prodigy.com>:

ever since I was a child, magnets have held a fascination for me. I've been
collecting them ever since. It used to be that you could always scrounge
loudspeakers for Alnico magnets. Then when the newer ceramic magnets began
to be incorporated into loudspeakers, it became a challenge to remove them
from their enclosures without breaking them. Now, I have to admit, I am
having a ball collecting the new 'super magnets' - like the ones inside hard
drives. There are also cool cylindrical magnets that you can get from inside
the heads of VHS machines. My question is does anyone know of other sources
either for Neodymium 'duper magnets', or strong ceramic magnets that I may
be missing out on? Magnets like these come closest to being perpetual motion
machines we have yet to make, and I'd hate to have some just wind up into
the trash because I didn't know they were there

Thanks.!
There is a big magnetic iron core if you dig deep enough.

There are stars with an extremly strong magnetic field,
very very strong.
We need a composite (non metal) spaceship.
hehe

 

[Boris Mohar]

On Tue, 22 Jun 2004 08:21:58 GMT, "Greysky" <greyskynospam@sbcglobal.net>
wrote:

ever since I was a child, magnets have held a fascination for me. I've been
collecting them ever since. It used to be that you could always scrounge

Take apart a hard drive. There is a pail of magnets in the head positioning
servo. They are very powerful and will pinch your fingers if yo are not
careful.



Regards,

Boris Mohar

Got Knock? - see:
Viatrack Printed Circuit Designs http://www3.sympatico.ca/borism/

 

[Steve J. Noll]

On Tue, 22 Jun 2004 08:21:58 GMT, "Greysky"
<greyskynospam@sbcglobal.net> wrote:

ever since I was a child, magnets have held a fascination for me. I've been
collecting them ever since. It used to be that you could always scrounge
loudspeakers for Alnico magnets. Then when the newer ceramic magnets began
to be incorporated into loudspeakers, it became a challenge to remove them
from their enclosures without breaking them. Now, I have to admit, I am
having a ball collecting the new 'super magnets' - like the ones inside hard
drives. There are also cool cylindrical magnets that you can get from inside
the heads of VHS machines. My question is does anyone know of other sources
either for Neodymium 'duper magnets', or strong ceramic magnets that I may
be missing out on? Magnets like these come closest to being perpetual motion
machines we have yet to make, and I'd hate to have some just wind up into
the trash because I didn't know they were there

Thanks.!

They are magic, aren't they? Have you tried the drop a magnet down a
copper pipe trick?

Steve J. Noll | Ventura California |
| The Used High-Tech Equipment Dealer Directory
| http://www.big-list.com
| The Peltier Device Information Site:
| http://www.peltier-info.com

 

[Julie]

Greysky wrote:

ever since I was a child, magnets have held a fascination for me. I've been
collecting them ever since. It used to be that you could always scrounge
loudspeakers for Alnico magnets. Then when the newer ceramic magnets began
to be incorporated into loudspeakers, it became a challenge to remove them
from their enclosures without breaking them. Now, I have to admit, I am
having a ball collecting the new 'super magnets' - like the ones inside hard
drives. There are also cool cylindrical magnets that you can get from inside
the heads of VHS machines. My question is does anyone know of other sources
either for Neodymium 'duper magnets', or strong ceramic magnets that I may
be missing out on? Magnets like these come closest to being perpetual motion
machines we have yet to make, and I'd hate to have some just wind up into
the trash because I didn't know they were there

Thanks.!

For purchase:

http://www.gaussboys.com

has a small assortment.

As you are probably aware, the older the drive, typically the bigger the
magnets. The largest that I've found were from an old full-height 5 1/4"
internal 300 MB SCSI drive. Newer drives are a bit disappointing, their
magnets are getting pretty thin and break easily...

 

[Steve Nosko]

"Steve J. Noll" <sjnoll@dontspambig-list.com> wrote in message
news:40d82de5.941789@news.east.earthlink.net...

On Tue, 22 Jun 2004 08:21:58 GMT, "Greysky"
greyskynospam@sbcglobal.net> wrote:

ever since I was a child, magnets have held a fascination for me. ...


They are magic, aren't they? Have you tried the drop a magnet down a
copper pipe trick?

Now how come I never thought of that one. Know what i'll be doing this
evening...

--
Steve N, K,9;d, c. i My email has no u's.

 

[Tom Bruhns]

http://www.wondermagnet.com/

"Greysky" <greyskynospam@sbcglobal.net> wrote in message news:<G_RBc.3475$Lu3.2606@newssvr25.news.prodigy.com>...

ever since I was a child, magnets have held a fascination for me. I've been
collecting them ever since. It used to be that you could always scrounge
loudspeakers for Alnico magnets. Then when the newer ceramic magnets began
to be incorporated into loudspeakers, it became a challenge to remove them
from their enclosures without breaking them. Now, I have to admit, I am
having a ball collecting the new 'super magnets' - like the ones inside hard
drives. There are also cool cylindrical magnets that you can get from inside
the heads of VHS machines. My question is does anyone know of other sources
either for Neodymium 'duper magnets', or strong ceramic magnets that I may
be missing out on? Magnets like these come closest to being perpetual motion
machines we have yet to make, and I'd hate to have some just wind up into
the trash because I didn't know they were there

Thanks.!

 

[JW]

On Tue, 22 Jun 2004 13:06:08 GMT sjnoll@dontspambig-list.com (Steve J.
Noll) wrote in Message id: <40d82de5.941789@news.east.earthlink.net>:

Have you tried the drop a magnet down a
copper pipe trick?

I'll bite. What happens?

 

[Rick]

"Steve Nosko" <suteuve.nosukowicuz@moutouroula.com> wrote in message
news:cb9mtv$460$1@newshost.mot.com...

"Steve J. Noll" <sjnoll@dontspambig-list.com> wrote in message
news:40d82de5.941789@news.east.earthlink.net...
On Tue, 22 Jun 2004 08:21:58 GMT, "Greysky"
greyskynospam@sbcglobal.net> wrote:

ever since I was a child, magnets have held a fascination for me. ...


They are magic, aren't they? Have you tried the drop a magnet down a
copper pipe trick?

Now how come I never thought of that one. Know what i'll be doing this
evening...

--
Steve N, K,9;d, c. i My email has no u's.

I just tried it with a 1/2 inch copper pipe and a 1/4 inch cube magnet.
Incredible! I did not know it would have that much of an effect!

 

[Tom Bruhns]

Boris Mohar <borism_-void-_@sympatico.ca> wrote in message news:<6h8gd0la8el0m4m5nl7haao3oans6oj2r2@4ax.com>...
....

Take apart a hard drive. There is a pail of magnets ...
^^^^

What a great mental image! I was in need of a chuckle today, and you
came through. Thanks. (BTW, the OP had already mentioned the HD
magnets...)

 

[Paul_Morphy]

"JW" <none@dev.nul> wrote in message
news:fnsgd0tq5phgvr0n5vec67tfcv90pecrqm@4ax.com...

On Tue, 22 Jun 2004 13:06:08 GMT sjnoll@dontspambig-list.com (Steve J.
Noll) wrote in Message id: <40d82de5.941789@news.east.earthlink.net>:

Have you tried the drop a magnet down a
copper pipe trick?

I'll bite. What happens?

I'm guessing some EMF is induced.

"PM"

 

[Tim Wescott]

Steve Nosko wrote:

"Steve J. Noll" <sjnoll@dontspambig-list.com> wrote in message
news:40d82de5.941789@news.east.earthlink.net...

On Tue, 22 Jun 2004 08:21:58 GMT, "Greysky"
greyskynospam@sbcglobal.net> wrote:


ever since I was a child, magnets have held a fascination for me. ...


They are magic, aren't they? Have you tried the drop a magnet down a
copper pipe trick?


Now how come I never thought of that one. Know what i'll be doing this
evening...

Hey fun! I knew about the effect, but never thought to try it with
something so mechanically simple. I'm going to have to show the kids now.

--

Tim Wescott
Wescott Design Services
http://www.wescottdesign.com

 

[Julie]

JW wrote:

On Tue, 22 Jun 2004 13:06:08 GMT sjnoll@dontspambig-list.com (Steve J.
Noll) wrote in Message id: <40d82de5.941789@news.east.earthlink.net>:

Have you tried the drop a magnet down a
copper pipe trick?

I'll bite. What happens?

http://my.execpc.com/~rhoadley/magpipes.htm

 

[Steve Nosko]

"Steve Nosko" <suteuve.nosukowicuz@moutouroula.com> wrote in message
news:cb9mtv$460$1@newshost.mot.com...

"Steve J. Noll" <sjnoll@dontspambig-list.com> wrote in message
news:40d82de5.941789@news.east.earthlink.net...
On Tue, 22 Jun 2004 08:21:58 GMT, "Greysky"
greyskynospam@sbcglobal.net> wrote:

ever since I was a child, magnets have held a fascination for me. ...


They are magic, aren't they? Have you tried the drop a magnet down a
copper pipe trick?

Now how come I never thought of that one. Know what i'll be doing this
evening...

Chuckle chuckle...anyone have a silver pipe?


Steve N, K,9;d, c. i My email has no u's.

 

[Steve Nosko]

"Paul_Morphy" <nopaul_morphy2@coolgoose.com> wrote in message
news:Lg1Cc.116751$Gx4.75197@bgtnsc04-news.ops.worldnet.att.net...

"JW" <none@dev.nul> wrote in message
news:fnsgd0tq5phgvr0n5vec67tfcv90pecrqm@4ax.com...
On Tue, 22 Jun 2004 13:06:08 GMT sjnoll@dontspambig-list.com (Steve J.
Noll) wrote in Message id: <40d82de5.941789@news.east.earthlink.net>:

Have you tried the drop a magnet down a
copper pipe trick?

I'll bite. What happens?

I'm guessing some EMF is induced.

....and... continue with the line of reasoning...

What does that EMF produce and where?...

--
Steve N, K,9;d, c. i My email has no u's.

 

[Steve]

what does it do??

They are magic, aren't they? Have you tried the drop a magnet down a
copper pipe trick?


Now how come I never thought of that one. Know what i'll be doing this
evening...


Hey fun! I knew about the effect, but never thought to try it with
something so mechanically simple. I'm going to have to show the kids now.

--

Tim Wescott
Wescott Design Services
http://www.wescottdesign.com

 

[Steve]

Hi, I don't know how powerful the magnets you have but I picked up these
3/4 inch sphere magnets on ebay. I have never seen any magnet so powerful.
Amazing!!!! These are not toys for kids!!!!!


One of his auctions.
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category=1469&item=5503175363

http://www.kjmagnetics.com/

Have fun

==================================================


Greysky wrote:

ever since I was a child, magnets have held a fascination for me. I've been
collecting them ever since. It used to be that you could always scrounge
loudspeakers for Alnico magnets. Then when the newer ceramic magnets began
to be incorporated into loudspeakers, it became a challenge to remove them
from their enclosures without breaking them. Now, I have to admit, I am
having a ball collecting the new 'super magnets' - like the ones inside hard
drives. There are also cool cylindrical magnets that you can get from inside
the heads of VHS machines. My question is does anyone know of other sources
either for Neodymium 'duper magnets', or strong ceramic magnets that I may
be missing out on? Magnets like these come closest to being perpetual motion
machines we have yet to make, and I'd hate to have some just wind up into
the trash because I didn't know they were there

Thanks.!

 

[Rich Grise]

"Jan Panteltje" <pNaonStpealmtje@yahoo.com> wrote in message
news:202b1564ec5508b648c026bbbf9b8ad4@news.teranews.com...

On a sunny day (Tue, 22 Jun 2004 08:21:58 GMT) it happened "Greysky"
greyskynospam@sbcglobal.net> wrote in
G_RBc.3475$Lu3.2606@newssvr25.news.prodigy.com>:

ever since I was a child, magnets have held a fascination for me. I've
been
collecting them ever since. It used to be that you could always scrounge
loudspeakers for Alnico magnets. Then when the newer ceramic magnets
began
to be incorporated into loudspeakers, it became a challenge to remove
them
from their enclosures without breaking them. Now, I have to admit, I am
having a ball collecting the new 'super magnets' - like the ones inside
hard
drives. There are also cool cylindrical magnets that you can get from
inside
the heads of VHS machines. My question is does anyone know of other
sources
either for Neodymium 'duper magnets', or strong ceramic magnets that I
may
be missing out on? Magnets like these come closest to being perpetual
motion
machines we have yet to make, and I'd hate to have some just wind up into
the trash because I didn't know they were there

Thanks.!
There is a big magnetic iron core if you dig deep enough.
There are stars with an extremly strong magnetic field,
very very strong.
We need a composite (non metal) spaceship.
hehe

Actually, I think the metaphasic shield gets around that problem.

Cheers!
Rich

 

[Don Klipstein]

In article <40D8E653.6FE89C84@optonline.net>, Steve wrote:

--------------9002068B3CF78CE28C8CE7B3
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: 7bit

what does it do??

They are magic, aren't they? Have you tried the drop a magnet down a
copper pipe trick?

The magnet moving down the pipe induces eddy currents. These eddy
currents produce an electromagnetic force that resists the movement of the
magnet (with respect to the pipe) and does so to an extent varying
directly with the speed at which the magnet is moving. This slows down
the magnet.

At least this is what I have heard.

And aluminum tubes do this also, just not quite as much as copper ones
do. And I have seen aluminum tube stock.

Most other metals do this less, but I imagine that iron and lead pipes
may slow the fall of a close-fitting "rare earth magnet" a little in
comparison to nonconductive pipes.

- Don Klipstein (don@misty.com)

 

[Dave Platt]

In article <slrncdhstp.kid.don@manx.misty.com>,
Don Klipstein <don@manx.misty.com> wrote:

Most other metals do this less, but I imagine that iron and lead pipes
may slow the fall of a close-fitting "rare earth magnet" a little in
comparison to nonconductive pipes.

#chuckle#

More than a little, in the case of an iron pipe!

--
Dave Platt <dplatt@radagast.org> AE6EO
Hosting the Jade Warrior home page: http://www.radagast.org/jade-warrior
I do _not_ wish to receive unsolicited commercial email, and I will
boycott any company which has the gall to send me such ads!