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Summary

Bernadette, in the guys' apartment for dinner, shows an interest in physics, particularly in the work that Leonard is conducting. Leonard offers her the chance to come tour his lab and watch him conduct an experiment. Penny gets jealous because she doesn't have enough background in physics to talk to Leonard about his job. She therefore seeks out Sheldon to teach her physics so that she would be able to relate to Leonard and discuss his work. In spite of his initial refusal, he agrees to take on the challenge of teaching physics to Penny. At the end of the show, while having dinner in the apartment, Penny spouts off a clearly prepared spiel which Sheldon has coached her in, repeating Sheldon's viewpoint that Leonard's experiment is functionally identical to the one conducted by a Dutch team of scienti...

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