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Picture 12 / 14

Picture 12 / 14

'The Proton Displacement' - Season 7, Episode 7

When Sheldon's idol, Professor Proton, seeks Leonard's help for a science paper instead of his, Sheldon gets his revenge by befriending rival science icon Bill Nye. Meanwhile, Raj is jealous when Howard starts crashing girls' night.

Air Date: November 7, 2013.

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