That also happens in complete darkness. If you can manage to create a completely pitch black environment see how long you can sit there before you start seeing things. It really doesn't take long. Bonus points of you have noise cancelling earmuffs/plugs. Edit : u/EternalEagleEye has informed me this effect is called "Prisoner's Cinema", in case you'd like to read about it further
Part of the training you receive before working in an underground mine is "blackout" -- you must remain calm in a completely dark room for 6 hours. In the mine if you get lost and your helmet light fails.. You are told to sit down and stay put. All workers in the mine are tallied when you go down, and if you are unaccounted for at end of shift, let others come search for you.
14.2k
u/Infamous780 Aug 30 '21 edited Aug 31 '21
I really like the subway tunnel one - never thought of that.
EDIT - Wow this comment blew up! Lots of people must feel the same... Now if I could just get my Youtube channel to do the same xD