The Big Bang Theory/The Proton Displacement
| This article about an episode needs to be expanded with more information.|
Please help out by editing it.
The Proton Displacement is the seventh episode of the seventh season of The Big Bang Theory, and the one hundred forty-second episode overall.
Starring: Johnny Galecki (Dr. Leonard Hofstadter), Jim Parsons (Dr. Sheldon Cooper), Kaley Cuoco (Penny), Simon Helberg (Howard Wolowitz), Kunal Nayyar (Dr. Rajesh "Raj" Koothrappali), Mayim Bialik (Dr. Amy Farrah Fowler), Melissa Rauch (Dr. Bernadette Rostenkowski-Wolowitz)
Special Guest Star: Bob Newhart (Arthur)
Guest Starring: Bill Nye (Himself)