“Line Plot” is Never the Right Choice (Why Excel Sucks, aleph-nought in a series)

There have been a bunch of interesting things written about education recently that I’ve been too busy teaching to comment on. I was pulling them together this morning to do a sort of themed links dump, when the plot at the right, from Kevin Drum’s post about school testing jumped out at me. This shows… Continue reading “Line Plot” is Never the Right Choice (Why Excel Sucks, aleph-nought in a series)

Relativity, Quantum, and the Internet

When Kate and I were walking Emmy last night, we were talking about the historical development of relativity. As one does, when walking the dog. I mentioned a couple of the pre-1905 attempts to explain things like the Michelson-Morley experiment, and how people like Lorentz and FitzGerald and Poincare were on the right track, but… Continue reading Relativity, Quantum, and the Internet

Camera Lens Questions

I am planning to buy a telephoto lens for my camera. From time to time, I want to take pictures of the various critters Emmy chases in the back yard, and that would be a whole lot easier if I didn’t need to get so close to them. And, of course, I strongly suspect there… Continue reading Camera Lens Questions