The Big Bang Theory
Season 3·EPISODE 15
The Large Hadron Collision
WatchedS03 · E15
Leonard can only bring one guest on a trip to see CERN's Large Hadron Collider (the world's largest and highest energy particle accelerator) in Switzerland on Valentine's Day.
AIR DATEFeb 8, 2010Original broadcast date
RUNTIME21m21 minutes
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