Episode Titles: Fluctuation

 You are viewing a list of 4 The Big Bang Theory episodes featuring "Fluctuation" in their title.


A situation in which something continually rises or falls.

  • The Electric Can Opener Fluctuation

    The Electric Can Opener Fluctuation
    Season 3, Episode 1 - Aired September 21, 2009

    After the gang return from their Arctic expedition, Sheldon is stunned to learn that the guys manipulated his data and invalidated his research. Fearing his scientific reputation has been ruined, Sheldon retreats to his mother's house in Texas. Meanwhile, Leonard catches up with Penny after his summer away, but just as it seems like a relationship is about to start, Leonard must fly to Texas to bring Sheldon home.

  • The Good Guy Fluctuation

    The Good Guy Fluctuation
    Season 5, Episode 7 - Aired October 27, 2011

    Leonard and Priya's long-distance relationship is put to the test when Leonard meets a cute comic book artist and finds himself drawn to her. Meanwhile, Sheldon tries to get revenge on the guys after they pull a Halloween prank on him.

  • The Decoupling Fluctuation

    The Decoupling Fluctuation
    Season 6, Episode 2 - Aired October 4, 2012

    When Penny has doubts about her relationship with Leonard, Sheldon comes to his buddy's defense and tries to convince Penny to stay with Leonard. Meanwhile, at the International Space Station, the other astronauts are picking on Howard, and Stuart joins the social group in his absence.

  • The Collaboration Fluctuation

    The Collaboration Fluctuation
    Season 10, Episode 19 - Aired March 30, 2017

    When Penny and Raj start spending more time together now that Raj has moved into the apartment, Leonard starts to feel like a third wheel.

    Meanwhile, Sheldon's interest in Amy's work leads them to collaborate, but they soon find they can only work well together when they're at each other's throats.