The Higgs Boson Observation — [s6e3]

The real-world event that prompted the episode was the announcement by CERN on July 4, 2012, that they had observed a new particle consistent with the long-sought Higgs boson.

: Amy Farrah Fowler initially feels threatened by Alex's presence, but the tension shifts to Penny when it becomes clear Alex is actually interested in Leonard. [S6E3] The Higgs Boson Observation

In this episode, Sheldon Cooper is inspired by the recent Discovery of the Higgs Boson to review his own childhood journals, hoping he previously documented a Nobel-worthy idea. The real-world event that prompted the episode was