The Expedition Approximation – Sheldon and Raj test whether they could survive a dark-matter research expedition in a salt mine by simulating the conditions in a steam tunnel. Meanwhile, Leonard and Penny seek advice from Wolowitz and Bernadette after they fight about money, on THE BIG BANG THEORY, Monday, Oct. 20 (8:00-8:31 PM, ET/PT), on the CBS Television Network.
A new episode of The Big Bang Theory, "The Hook-Up Reverberation", airs tonight, October 6, at 8/7c on CBS, followed by a rerun of "The Table Polarization" at 8:30/7:30c.