Science Richard Feynman broadcast on BBC

why is he talking about a piece of rubber?
 
I'll just copy this from Wikipedia :P
Wikipedia said:
The failure of an O-ring seal was determined to be the cause of the Space Shuttle Challenger disaster on January 28, 1986. A contributing factor was cold weather prior to the launch. This was famously demonstrated on television by Caltech physics professor Richard Feynman, when he placed a small O-ring into ice-cold water, and subsequently showed its loss of pliability before an investigative committee.
 
full details about Challenger, the O-Ring and more can be seen in this documentary.

 
I thought youtube vids could only be 10 minutes ?? and here we got a great 45 minute show!
 
User uploaded videos can only be 10 minutes. There are some people that have agreements in place with youtube and can upload entire TV shows.
 
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