大象传媒

Feynman was appointed to the panel that investigated the Space Shuttle Challenger disaster. During the hearing, he famously called for a glass of ice water, which he used to demonstrate how the rubbery O-rings that were meant to form a critical seal in the spacecraft's rocket boosters lost their ability to spring back into shape at low temperatures. Feynman later stated that Nasa had 'exaggerated the reliability of the Space Shuttle to the point of fantasy'.

Archive programmes available on iPlayer reflect the broadcast standards and attitudes of their time, which may not accord to some current 大象传媒 editorial guidelines. We aim to select programmes which can be shown in their entirety but in some cases edits are required. In these cases, edits are kept to a minimum and are made only for technical reasons.