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  4. Is it possible to make a shield to block a magnetic field?
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Is it possible to make a shield to block a magnetic field?

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Offline evan_au

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Re: Is it possible to make a shield to block a magnetic field?
« Reply #20 on: 14/10/2017 05:21:06 »
Quote from: ciniva
I'm interested in the following:
Can a 'lessEMF' magnetic shield (on youtube there is video), prevent magnetic field strength from neodymium magnets?
Do you mean this video? (there are many that fit the description you provided...)

He observes that you can't create a magnetic monopole.

He also shows how you can shield a neodymium magnet.
- These are quote strong magnets
- Thicker shielding works better
- MuMetal does not work well, because it saturates in strong magnetic fields.

Quote
As I promised, you can see everything in this video
https:// www.youtube.com/watch?v=myqCHp22nGU&feature=youtu.be
Thanks for posting the video showing the construction of your magnetic shield, and the pattern with the iron filings. Videos certainly can give a good idea of what is going on!

Unfortunately, the paper hides the orientation of the magnet underneath, and I don't see how the magnetic fields outlined by the iron filings relates to the description printed on the paper.

Could you please repeat the iron filing experiment, but first show us the magnet, then put the paper over the top, and then show the iron filings pattern?
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Offline ciniva (OP)

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Re: Is it possible to make a shield to block a magnetic field?
« Reply #21 on: 14/10/2017 18:34:14 »
Quote from: evan_au on 14/10/2017 05:21:06
Do you mean this video?
That's that video. I asked the question (in comment) but I did not get the response from the video author.
Quote from: evan_au on 14/10/2017 05:21:06
He also shows how you can shield a neodymium magnet.
How much do I know about this video by using the author "Ferrite magnet"?
Quote
Ryan Walsh - 7 months ago
Hello Sir. Nice presentation
Would you be able to tell me the type of magnet that was used. Was it a N-52.. or something less.
I bought and Received the material today from your company.

Author: LessEMF - 4 months ago
Ferrite
I think in a single comment (Ryan Walsh) read the question and answer, am I right
Quote from: evan_au on 14/10/2017 05:21:06
Could you please repeat the iron filing experiment, but first show us the magnet, then put the paper over the top, and then show the iron filings pattern?
On this URL link I've set up a video on your request.
www.youtube.com/watch?v=UoGLhb7lLm8&feature=youtu.be [nofollow]

« Last Edit: 14/10/2017 18:42:59 by ciniva »
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Offline ciniva (OP)

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Re: Is it possible to make a shield to block a magnetic field?
« Reply #22 on: 18/10/2017 19:32:47 »
Quote from: evan_au on 14/10/2017 05:21:06
Could you please repeat the iron filing experiment, but first show us the magnet, then put the paper over the top, and then show the iron filings pattern?
I was expecting your comment ;)
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Tags: magnetic field  / magnetic screening  / magnetism  / magnetic shield 
 
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