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*Watch with headphones on! Is 45 minutes really the longest anyone can stay in a perfectly silent, pitch-black room? Support Veritasium on Patreon http://bit.ly/VePatreon Check out Audible: http://bit.ly/AudibleVe Want to watch the whole hour of silence? http://youtu.be/jr1UMFC9DV0 Many stories have circulated claiming the longest anyone has stayed in an ultra-quiet anechoic chamber is 45 minutes, the reason being any longer would drive you insane. To me this sounded like unsubstantiated rubbish, like the claim the Great Wall is the only manmade structure visible from space. So I put my own psyche on the line, subjecting myself to over an hour of the most intense quiet on Earth. No, this was not THE quietest room on Earth (-9dB) but it is one of the quietest, and the truth is once you put a person inside, they are by far the loudest thing in there so the sound rating of the room is irrelevant. I was not surprised to find that I could stay in there for as long as I liked and feel perfectly fine. What was surprising is that my heartbeat was audible. You can hear it on the sound recording. Now I wasn't consciously aware of the sound of my heart while in the room, but I was more aware of the feeling of it beating. Huge thank you to everyone at BYU: Duane Merrell, Spencer Perry, Cameron Vongsawad, Jazz Myers, Ann Clawson, and Robert Willes.
Help Keep PTSOS Going, Click Here: https://www.gofundme.com/ptsos Dan Burns explains his space-time warping demo at a PTSOS workshop at Los Gatos High School, on March 10, 2012. Thanks to Shannon Range from the Gravity Probe B program for creating the original demonstration which he shared with Dan in 2004. Information on how to make your own Spacetime Simulator can be found here: http://prettygoodphysics.wikispaces.com/PGP-Modern+Physics
Also includes the DiscoVision, MCA VideoDisc, MCA Videocassete, MCA Home Video, & MCA Universal Home Video logos in here as well! Hope you enjoy! :-) This logo history was requested by Jordan Rios, so credit to him.
Bill uses a bucket of propylene glycol to show how a fiber optic cable works and how engineers send signal across oceans. More info at http://www.engineerguy.com. You can translate captions at http://www.engineerguy.com/translate
Tape distributor: Turner Home Entertainment [TCM Home Video] | Reprint pressing [https://youtu.be/_TaatiV0q9E] | Tape print date: November 17, 1997 | An RKO musical starring Fred Astaire and Ginger Rogers 1. FBI warning screen [custom version] 2. 1993 Turner Home Entertainment logo [oval variant] 3. Robert Osborne introduction [R.I.P.] 4. TCM 'The Light & Dark Sides of Hollywood' video preview 5. Turner Classic Movies Feature Presentation "Roll Film" [a different ID than the more familiar intro we're used to] 6. Format screen 7. 1931 Radio Pictures logo
Taken from a TCM airing of the movie "Secret of the Blue Room". Special thanks to Pepsi9072 for providing me with this.
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