[s7e7] The Proton Displacement -

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

: 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

The full cast for this episode features the series regulars and two notable guest stars: : Returns as Arthur Jeffries (Professor Proton). Bill Nye : Appears as himself in a cameo role. Johnny Galecki : Leonard Hofstadter. Jim Parsons : Sheldon Cooper. Kaley Cuoco : Penny. Simon Helberg : Howard Wolowitz. Kunal Nayyar : Rajesh Koothrappali. Mayim Bialik : Amy Farrah Fowler. Melissa Rauch : Bernadette Rostenkowski. Scientific and Trivia Highlights [S7E7] The Proton Displacement

: Arthur Jeffries' character mentions that Bill Nye "stole" his show, a humorous reference to the real-life influence of scientific edutainment pioneers like Don Herbert (Mr. Wizard) on later shows. The Proton Displacement | The Big Bang Theory Wiki | Fandom

: 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. : The research paper Leonard and Arthur discuss

: 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.

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 Cast and Key Guest Stars The full cast

The main storyline begins when Sheldon and Leonard run into at a drug store. Conflict arises when Arthur emails Leonard to collaborate on a research paper about vacuum nanoelectronics instead of Sheldon, whom Arthur finds incredibly annoying.