Video for January 22, 2019 delayed

Apologies - we had a slight malfunction with recording the video (basically it only recorded the speaker but not the slides). This will be addressed (or we’ll re-record the talk shortly again over the weekend). I’m really sorry about this but we had a total of 5 minutes to test our camera setup in the final configuration in LeConte after the previous lecture finished and something went wrong … it should be fixed for this time.