Notes for Jan 30

Hi everyone,

I hope you had as much fun as I did hearing students teach most of today’s class. The sense I got from students was that the discussion was productive and helpful. Please don’t hesitate to give me feedback (e.g. by email) about how well classroom discussions are working for you.

Next week we will continue our Cosmology bender and talk about how astrophysicists weigh the universe. Here are my notes ahead of time. You may also like to use the cosmology links I posted last week. Enjoy!

Cheers,
Prof. P.