Wroblewski has a very lively personality and does a good job getting you to appreciate the situation at the turn of the century in physics. The talk was divided up into roughly three sections, roughly outlined as so:

(4 minute intro)
I - What was going on in 1900 in physics
     how many physicists were there?
     how active was the field?
II - The First International Congress of Physics
     Who was there? What did they talk about?
     What was thought of the new physics then?
III - Some attitudes of 1900
     What was important, then and now?
     Kelvin's impressions
(6 minute Q&A session)

Taking evidence from publications, and much from the First International Congress of August 1900, he is able to lend a historian's insights into what physics was up to and how different it seemed then from our impressions of it today. With his nice blending of statistics and quotes, I found myself jotting down a few notes for later, making me wish the slides of the talk were available somewhere. Although the talk was given to university-level physics students, the talk has something to offer anyone who likes to try to understand the mood in physics at this time.

This talk is done purely in real audio. The nice part is you get to watch an actual video of the talk, the downside is that there are no slides, which would have been really great to have. While the video is small and of shaky quality, the audio sounded very nice throughout. A 28.8k or 56k modem should do fine with this talk.

Expected background for talk:
Just an interest in the history of physics around 1900.