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17 answers

There is no material available that will block a magnetic field. I can refer you to the article from the Department of Science, Newton ask a scientist. You will find this very useful and explains everything.

www.newton.dep.anl.gov/askasci/phy00/phy00508.htm

2007-06-28 23:25:33 · answer #1 · answered by witchnanny 4 · 0 1

Certain frequencies of electromagnetic radiation may not pass through lead, but a magnetic material held near lead WILL cause magnetic force field lines to go through it. I do not think there is any form of matter that a magnetic field will not go into or through. However, like another answerer stated, an item with a stronger magnetic field could deflect a weaker field.
Edit after reading other answers:
For the person that said anything protected from EMP will not let a magnetic field pass through it, that's is not true. All EM shielding does is provide a way for any EMP energy to be routed away from vital components. The energy of EMP hits material in the shielding designed to be susceptible to it and take all of the EMP's energy away to an outlet that isn't the parts inside the device that need to be kept working. But, that is energy flow, again a magnetic force field WOULD go into the shielding, and cause electrical current in the wiring of the shielding and all the subsequent energy would be dissipated away from the vital parts.

2007-06-28 23:25:50 · answer #2 · answered by quntmphys238 6 · 0 0

any object can stop a magnetic field, but then again a huge magnetic field would take a huge object to block it,
this can be seen with the use of EM shielding on plans this,
also the military uses a lot of EM shielding to protect them in the event of war

2007-06-28 23:18:46 · answer #3 · answered by EXZO 2 · 0 0

Completely sheild against magnetic feild, no. There are alloys called Mu-Metal which have the ability to block more than most materials. These are over the magnets on sheilded computer speakers to allow them to be placed near monitors and televisions.

2007-06-28 23:48:39 · answer #4 · answered by Charles C 7 · 0 0

For a static field, only a superconductor. For oscillating mag. fields, certain metals depending on their resistivity and freq. of the osc., i.e. an oscillating field will not be able to soak through a copper plate if the frequency of the oscillation is high enough.

2007-06-29 02:45:39 · answer #5 · answered by the_meadowlander 4 · 0 0

One of the properties of superconducting materials is that magentic field lines cannot penetrate the material.

Other than that I don't think there is any material than can exclude magentic fields. A faraday cage can prevent electric fields from entering a space but there is no equivalent for magentism.

2007-06-29 01:41:48 · answer #6 · answered by Anonymous · 1 0

I wouldn't think there is much magnetic field inside a 45 gallon oil drum, so I suggest soft iron

2007-06-29 06:47:36 · answer #7 · answered by bo nidle 4 · 0 1

definite there is and that they are referred to as antiferromagnet components. Antiferromagnets have a 0 magnetic 2nd, which ability no container is produced by using them. yet this components can in basic terms be won by using some components at an exceedingly low temperature.

2016-11-07 19:18:13 · answer #8 · answered by ? 4 · 0 0

this is quiet an interesting question.i think there is no meterial on earth through which magnetic field does not pass.the reason which comes to my mind is that ,earth itself is acting as a magnet.and scientist have yet not found anything of that kind (i am not sure)

2007-06-29 03:35:49 · answer #9 · answered by Anonymous · 0 1

You may be interested in this explanation of a magnetically insulated chamber.

http://www.takenaka.co.jp/takenaka_e/news_e/pr9806/m9806_03_e.htm

2007-06-28 23:17:14 · answer #10 · answered by Sangmo 5 · 0 0

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