<Tr> <Td_colspan="8"> <P> Bert asks for Sheldon's help in a geology research project relating to dark matter . Sheldon secretly agrees, but is too embarrassed to admit he is working with rocks . Bert finds out about this and ends their partnership . After talking with Amy, Sheldon goes to apologize, only to find Leonard has taken his place . Meanwhile, Raj runs into Ruchi again and goes out with her, but she does not believe in romantic love . After Howard and Bernadette tell Raj that he can just have sex with Ruchi, he agrees to keep it casual . </P> Title reference: Sheldon working in geology with Bert . </Td> </Tr> <P> Bert asks for Sheldon's help in a geology research project relating to dark matter . Sheldon secretly agrees, but is too embarrassed to admit he is working with rocks . Bert finds out about this and ends their partnership . After talking with Amy, Sheldon goes to apologize, only to find Leonard has taken his place . Meanwhile, Raj runs into Ruchi again and goes out with her, but she does not believe in romantic love . After Howard and Bernadette tell Raj that he can just have sex with Ruchi, he agrees to keep it casual . </P> <Tr> <Th> 239 </Th> <Td> 8 </Td> <Td> "The Tesla Recoil" </Td> <Td> Anthony Rich </Td> <Td> Story by: Chuck Lorre & Eric Kaplan & Tara Hernandez Teleplay by: Steve Holland & Maria Ferrari & Jeremy Howe </Td> <Td> November 16, 2017 (2017 - 11 - 16) </Td> <Td> T12. 15608 </Td> <Td> 13.44 </Td> </Tr> <Tr> <Td_colspan="8"> <P> After learning Sheldon went behind their backs to work with the military again, Leonard and Howard say Sheldon is like Thomas Edison, taking credit for other's ideas, while they are more like Nikola Tesla . Leonard and Howard bring in Barry Kripke to help create a better idea than Sheldon's, but Kripke goes to the military himself cutting all three of them out . Meanwhile, Bernadette fears Ruchi is trying to steal her projects at work while she is on maternity leave, and hires Raj to spy on her . Though he finds proof that Ruchi may be stealing from Bernadette, Raj tries to defend Ruchi like a boyfriend would, pointing out Bernadette's hypocrisy as she would've most likely stolen from other people's projects as well . Ruchi is not happy about this and promptly dumps Raj . </P> Title reference: The guys discussion of Tesla and Edison . </Td> </Tr>

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