[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

: 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 [S7E7] The Proton Displacement

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 : Arthur Jeffries' character mentions that Bill Nye

: 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. Howard crashes the evening, using his high-tech tools

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

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

: 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.