Talk:Aluminium foil/Archives/2018

Electromagnetic Shielding Section COULD be Misleading

The article states that "At frequencies more than 100 MHz, the electric field is attenuated by more than 80 decibels (dB) (less than 10−8 = 0.00000001 of the power gets through)." That is, it creates the impression that ALL frequencies above 100 MHz will be attenuated to a high level. I have only my basic experimental observations to go from BUT I have reason to believe that some frequencies above 100 MHz will not be attenuated - essentially creating 'Frequency Windows', which I imagine may be a general feature for many materials, through which Electromagnetic Interference will penetrate a Faraday Cage constructed out of Aluminium Foil. Am I mistaken? ASavantDude (talk) 20:12, 5 January 2018 (UTC)