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Author Topic: Using diamagnetism materials  (Read 9749 times)

CLaNZeR

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Using diamagnetism materials
« on: December 03, 2006, 03:26:39 PM »
Has anyone played with diamagnetism materials such as bismuth, instead of using another magnet on a wheel for the Repel action, wonder how the sticky point would act against this?

Short Description:
A diamagnetic substance is one whose atoms have no permanent magnetic dipole moment.  When an external magnetic field is applied to a diamagnetic substance such as bismuth or silver a weak magnetic dipole moment is induced in the direction opposite the applied field.

 
Regards

Sean.

gyulasun

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Re: Using diamagnetism materials
« Reply #1 on: December 03, 2006, 07:34:16 PM »
Hi Sean,

See this thread here and my answer #5 and study the links there, especially the last one there:
http://www.overunity.com/index.php/topic,1073.msg8090.html#msg8090

I do not think bismuth would have enough useful effect for you but pyrolitic graphite may be. Both can be ordered, see the bottom of this link: https://www.scitoyscatalog.com/

I have not had hands-on experiments with such graphites yet.

rgds
Gyula

CLaNZeR

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Re: Using diamagnetism materials
« Reply #2 on: December 03, 2006, 08:02:17 PM »
Hi Gyula

Excellent links, many thanks.
I sourced some cheap bismuth off Ebay today and will be playing with that, but will have a lookout for some pyrolytic graphite and will check your links.

Regards

Sean.


Hi Sean,

See this thread here and my answer #5 and study the links there, especially the last one there:
http://www.overunity.com/index.php/topic,1073.msg8090.html#msg8090

I do not think bismuth would have enough useful effect for you but pyrolitic graphite may be. Both can be ordered, see the bottom of this link: https://www.scitoyscatalog.com/

I have not had hands-on experiments with such graphites yet.

rgds
Gyula

DanC

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Re: Using diamagnetism materials
« Reply #3 on: December 13, 2006, 03:25:07 AM »
Hi Sean

I don't know if that link could help

http://www.rexresearch.com/wadle/wadle.htm

Dany

tak22

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Re: Using diamagnetism materials
« Reply #4 on: December 13, 2006, 09:39:36 PM »
Thanks DanC!

The Wadle and May shield looks like a promising material to have on hand for magnetic experimenting!

I'm not a patent expert, but are the details provided enough for one to replicate the experiment, or is there usually a 'held back' secret?

Is sourcing ingredients like coal slag and silver powder going to be hard?

Anyways,  Here's a clip of the first example experiment from the patent:

Step 1. 35 grams of 30/60 coal slag containing 25% Aluminum Oxide, 25% Iron Oxide, and 50% Mineralized Glass.

Step 2. The coal slag was coated with 15 grams of a six micron (6.mu.) silver powder.

Step 3. Then, 25 grams of white silica powder--250 sieve screen was added to the top of the silver powder

Step 4. Finally, 25 grams of a mixture of pharmacy grade calcium, magnesium, and zinc powder. The 25% of the mixture contains 60% weight of calcium, 28% weight of magnesium, and 12% weight of zinc.

The three elements of step 4 are pharmacy grade and were purchased over the counter at a local drug store in tablet form and then finely ground.

Results of the test:

A test was done using a 21/2 ounce round spherical container 3/4'' diameter.times.11/2'' long of iron filings, a 28 lb pull 3/4'' diameter.times.1/2'' long rare earth magnet, and one 3/8'' thick 4''.times.4'' square sheet of each of the following materials: A. Plastic B. Lead C. Stainless Steel D. Copper E. the sheet covered with the shielding material

The test went as follows:

Each individual sheet of shielding material was set upright. The 28 lb rare earth magnet was held against one side of the shielding material and the iron fillings against the other side. The magnet and the iron fillings were held against each side of the shielding material listed above A-E in the same manner.

The magnet attraction from the 28 lb magnet to the iron fillings on shielding sheets A-D was strong enough to hold the iron fillings and the magnet in place.

The shield element E deflected the magnetic pull of the 28 lb rare earth magnet preventing the attraction to the iron fillings, thus the magnet and the iron filing fall down due the earth gravitation pull.

CLaNZeR

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Re: Using diamagnetism materials
« Reply #5 on: December 17, 2006, 06:39:04 PM »
Thanks Dan

Very interesting link.

Regards

Sean.

Hi Sean

I don't know if that link could help

http://www.rexresearch.com/wadle/wadle.htm

Dany

Jinis

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Re: Using diamagnetism materials
« Reply #6 on: February 07, 2007, 03:20:01 PM »
I sourced some cheap bismuth off Ebay today and will be playing with that, but will have a lookout for some pyrolytic graphite and will check your links.

Hi CLaNZeR, any good results in shieldings unsing this bismuth?? I would need also some magnetic shield for my magnetic exps. I have found on ebay an 250gr block of wismuth. It is possible to melt it into appropriate magnetic shield form you think? Or it would be to order pyrolithic graphit better?

ciao :)
Jinis

Jinis

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Re: Using diamagnetism materials
« Reply #7 on: February 08, 2007, 04:44:00 PM »
Today, I ordered 99.99% of 1kg pure wismuth. I will try to melt it into small magnetic shield. Someone may be has any hints how to do it best?

ciao :)
     Jinis

CLaNZeR

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Re: Using diamagnetism materials
« Reply #8 on: February 09, 2007, 10:16:35 PM »
Hi Jinis

To tell the truth I have not played with it much, I did a few experiments when I received it and not as powerfull as I had hoped regards repulsion.

I will get back to playing with shielding when I get time.
I decided the other week that I am like a kid in a sweet shop, too many ideas to try that I just taste a bit of everything!. So put all the things I wanted to play with on bits of paper in a hat as such and picked one out. Torbay came out and I am going on fate angle at the moment and gonna see the torbay replication project to the end before being distracted again by other ideas!

Apparently Bismuth melts at very low temp and people have simply placed the Bismuth into a container, placed in boiling water and then poored it into moulds to shape.

No idea what temp the pyrolitic graphite melts at, but have got a couple of small bits here to play with oneday when I got more time.
Only home 2 days a week at the moment, so trying to balance the whole Family/work and fun stuff if you get my drift.

Let us know how you get on.

Regards

Sean.


Low-Q

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Re: Using diamagnetism materials
« Reply #9 on: February 10, 2007, 11:24:14 AM »
Has anyone played with diamagnetism materials such as bismuth, instead of using another magnet on a wheel for the Repel action, wonder how the sticky point would act against this?

Short Description:
A diamagnetic substance is one whose atoms have no permanent magnetic dipole moment.  When an external magnetic field is applied to a diamagnetic substance such as bismuth or silver a weak magnetic dipole moment is induced in the direction opposite the applied field.

 
Regards

Sean.


Diamagnetism is interesting. However, the magnetism used to diamagnetize the material is spoiled, so it's not possible to us the magnets fully potential to make a machine work. I have several "post it" drawings and tests that does not work, but I believe it is other and much simpler ways to make a self sustaining device.

It is however possible to use other materials for diamagnetism. Several thin lead, or even carbon, sheets upon each other works well. The secret lays in the structure of the material, as bismuth is crystalized mostly in one directions you'll get the same effect as many thin sheets of lead.

The diamagnetism is however so weak that the possible power to maintain constant RPM in a motor would be consumed by friction and more - the motor stops.

Br.

Vidar