Check this thread. Mu-metal is abest material for shielding, and at the offered price it is almost a steal.
http://www.diyaudio.com/forums/showthread.php?s=&threadid=3740
http://www.diyaudio.com/forums/showthread.php?s=&threadid=3740
As near as I remember from my 'waves and fields' EE class, where we actually worked the math, I don't think it matters as long as it's a conductor, and it completly coveres the object. "Covers" means no openings smaller than the wavelength you want to contain.
The reason microwave ovens have holes in the screen, is that the microwaves can't get through, but light can.
That's how I remember which way wavelength goes - light is a higher frequency (MUCH!) than the microwaves; you can see through, but the microwaves can't.
Wouldn't mind someone else commenting though.
The reason microwave ovens have holes in the screen, is that the microwaves can't get through, but light can.
That's how I remember which way wavelength goes - light is a higher frequency (MUCH!) than the microwaves; you can see through, but the microwaves can't.
Wouldn't mind someone else commenting though.
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