Aired Friday September 17, 6:30pm - 7:00pmon E4 +1

The Big Bang Theory

Series 7 Episode 7: The Proton Displacement

The Proton Displacement When Professor Proton contacts Leonard instead of Sheldon for help, Sheldon turns to another TV scientist, Bill Nye. Also, Raj gets jealous when Howard crashes a girls' night.

Original air date
Cast and crew
  • Mark CendrowskiDirector
  • Johnny GaleckiLeonard Hofstadter
  • Jim ParsonsSheldon Cooper
  • Kaley CuocoPenny
  • Simon HelbergHoward Wolowitz
  • Kunal NayyarRaj Koothrappali
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