It's Season 2 of the Goeppert Mayer Gauge! We kick things off with an introduction to transient absorption spectroscopy and discuss what it is, why it's useful, and how it's done before getting a bit philosophical on how best to think about the signal that is actually measured. And just to prove how serious we are, Jay has scored us our first (fake) sponsorship, and Dugan finally recorded with a microphone that doesn't sound like it's under water. Things are about to get CRAZY. Are you ready for Season 2?!?!?As always, extra content and links are available on our website:https://foleylab.github.io/gmgauge/