ALostInquirer@lemm.ee to No Stupid Questions@lemmy.world · edit-28 months agoWhat produced the old dead channel tv static audiovisuals on tvs?upload.wikimedia.orgexternal-linkmessage-square62fedilinkarrow-up1179file-text
arrow-up1179external-linkWhat produced the old dead channel tv static audiovisuals on tvs?upload.wikimedia.orgALostInquirer@lemm.ee to No Stupid Questions@lemmy.world · edit-28 months agomessage-square62fedilinkfile-text
Media alt text: 3D render of old tv set with animated static on its screen, as if tuned to a dead channel.
minus-squaredb2@lemmy.worldlinkfedilinkarrow-up22·8 months agoYou’d still see static from the TV itself and any radiation that passed in to the cage. It’s not a perfect EM blocking device like TV shows and movies would have you believe. https://en.wikipedia.org/wiki/Faraday_cage
minus-squarecmnybo@discuss.tchncs.delinkfedilinkEnglisharrow-up12·8 months agoEven if the Faraday cage blocked all RF perfectly, the Johnson noise would still produce plenty of static.
You’d still see static from the TV itself and any radiation that passed in to the cage. It’s not a perfect EM blocking device like TV shows and movies would have you believe.
https://en.wikipedia.org/wiki/Faraday_cage
Even if the Faraday cage blocked all RF perfectly, the Johnson noise would still produce plenty of static.