May I Be Excused? My Brain Is Full.

Note from a student in my class, who had second thoughts about attending on Friday. I ate half the donut before I thought to take a picture.

I’ve had a lot of weird things happen in the time I’ve been teaching, but the above image is my new favorite message from a student. We gave an exam Thursday night, so a couple of my colleagues canceled class on Friday, but I’m going to be at DAMOP the last week of class, so… Continue reading May I Be Excused? My Brain Is Full.

Friday Tab Clearance

Here’s some stuff I’ve had open in Chrome for a while, and want to close before we go out of town for the weekend: — Statistics on the professionalization of science blogging, a topic I have banged on about in the past. Nothing really new, but nice to have it somewhat quantified. — Speaking of… Continue reading Friday Tab Clearance

The Importance of Shaking Things Up

That recent study on active learning continues to generate some press, including a new interview with Carl Wieman about why traditional lectures are problematic. Wieman is pretty blunt about his opinions on the subject, which will come as no surprise to people in the AMO physics community… Anyway, while most of the rest of the… Continue reading The Importance of Shaking Things Up

Mysteries of Introductory Physics

"Clicker Question" slide from today's lecture.

Every now and then, I run across a question in class that I genuinely don’t know how to answer. If I’m lucky, this happens when I’m prepping a class, rather than when a student asks it live. Like today, when I noticed the above discussion question in my slides (reproduced at the bottom as well… Continue reading Mysteries of Introductory Physics

Botany for Kids

Kate’s arguing a case in Connecticut today, so I was solo-parenting last night and this morning. which means that while I did manage to watch Cosmos last night, and have some thoughts about it, I don’t have the time or energy to write them up this morning. As explanation, I offer this video from dinner… Continue reading Botany for Kids

Millikan, Einstein, and Planck: The Experiment io9 Forgot

Schematic of the apparatus Millikan used to determine Planck's constant from the photoelectric effect. Image from the March paper discussed below.

A couple of weeks ago, io9 ran a piece about the old accusations that Robert Millikan manipulated his data for the electron charge with the headlineDid a Case of Scientific Misconduct Win the Nobel Prize for Physics? that got a lot of attention. I wasn’t as impressed with this as a lot of other people,… Continue reading Millikan, Einstein, and Planck: The Experiment io9 Forgot