3 ms·
> I think they are magically 100% effective. No, they are not. Even a continuous, zero-hole metallic bubble will leak some radiation inside, depending on frequ
by Florin_Andrei 10y ago
> I think they are magically 100% effective.
No, they are not. Even a continuous, zero-hole metallic bubble will leak some radiation inside, depending on frequency, nature of material, wall thickness, etc.
Start here:
https://en.wikipedia.org/wiki/Penetration_depth https://en.wikipedia.org/wiki/Penetration_depth
then continue reading about absorbance, skin effect, etc.
- JoeAltmaier 10y agoI see. Only for zero-resistance metal would skin depth be zero.
- JoeAltmaier 10y agoAt microwave frequencies, skin depth is essentially zero (microns anyway) for most metals. So until the bag is melted, nothing will get through.