Sound waves have air, water waves have...well...water, but what about light waves? In Part 1 of this two-part episode, Beth explains the concept behind interferometry, and how we discovered what light does (or doesn't) travel through!\n\xa0\nhttps://linktr.ee/notyetadr\n\xa0\nEdited by: Alastair\n\xa0\nQuestions or Suggestions? Email us at phd32b@gmail.com