3 ms·

A couple of right angles not really make it light tight either. I remember going caving and we would have to go 100m or more through many different turns befor

• newaccount74 5y ago
  There's an old man made cave near me that consists of two small connected chambers, and once you are in the second chamber it is pitch black.
• devb 5y ago
  Are you familiar with daylight tanks for film processing? They work as advertised using right angles.
  • pdkl95 5y ago
    The last time I used a daylight tank was in the mid '90s so maybe newer models are different, but I believe they are made out of black/dark plastic? Several right angle turns of black plastic provides multiple opportunities for a visible-light photon to be absorbed into a black body where it should be re-radiated as infrared (heat). A hole/leak in the metal wall of a Faraday cage is going to be a lot more reflective and can easily act like a crude waveguide[1]. [1] https://en.wikipedia.org/wiki/Waveguide_%28radio_frequency%29 https://en.wikipedia.org/wiki/Waveguide_%28radio_frequency%2...