The Proton Displacement — [s7e7]

: The research paper Leonard and Arthur discuss focuses on vacuum tubes and nanoelectronics .

: This episode adds Bill Nye to the long list of celebrities who have filed restraining orders against Sheldon, including Leonard Nimoy, Stan Lee, and Carl Sagan. [S7E7] The Proton Displacement

: Sheldon is seen wearing a Sinestro Corps (Yellow Lantern) shirt, which symbolizes "fear"—a nod to the tension in his relationship with Arthur during the episode. : The research paper Leonard and Arthur discuss

: Meanwhile, Raj joins the "girls' night" with Penny, Amy, and Bernadette to make jewelry. Howard crashes the evening, using his high-tech tools to "improve" their crafts, which upsets Raj, who feels his safe space for expressing his feminine side is being invaded. Cast and Key Guest Stars : Meanwhile, Raj joins the "girls' night" with

In which originally aired on November 7, 2013, the central plot revolves around Sheldon Cooper's complex relationship with his childhood hero, Professor Proton. Episode Summary

: Feeling slighted, Sheldon attempts to make Arthur jealous by befriending rival science TV host Bill Nye ("The Science Guy"). This plan backfires when Bill Nye eventually ditches him, leading to another celebrity restraining order for Sheldon.