Physics Study Group- Blog Update

I have updated my Physics blog at http://sturgisphysics.blogspot.com/ with a variety of things recently. I have posted notes that I took in class, a link to a website that I think could be very helpful (www.wolframalpha.com) and an image I found of a Hertzsprung Russell diagram. It sounds like some of my classmates have been using the blog, so hopefully it was helpful to them when preparing for today's test.