Among the articles highlighted in this week’s Physics is one about a new test of QED through a measurement of the g-factor of the electron in silicon ions. This comes on the heels of a measurement of proton spin flips (this includes a free PDF) a couple of weeks ago, and those, in turn, build… Continue reading It’s Magnetic Moment Season: Measuring Various g-Factors
Month: July 2011
The Test(ing) of Time 2: Freezing Time
A month and a half ago, I reported on a simple experiment to measure the performance of a timer from the teaching labs. I started the timer running at a particualr time, and over the next couple of weeks checked in regularly with the Official US Time display at the NIST website, recording the delay… Continue reading The Test(ing) of Time 2: Freezing Time
Links for 2011-07-12
RESEARCH | MATTHEW B. THOMPSON Like many interesting scientific discoveries, this one was an accident. Sean Murphy, an undergraduate student, was working alone in the lab on a set of faces for one of his experiments. He aligned a set of faces at the eyes and started to skim through them. After a few seconds,… Continue reading Links for 2011-07-12
What Not to Say to a Pop-Science Author
(Note: This was not prompted by any particular comment. Just a slow accumulation of stuff, that turned into a blog post on this morning’s dog walk.) It’s been a couple of years now that I’ve been working on writing and promoting How to Teach Physics to Your Dog, so I’ve had a lot of conversations… Continue reading What Not to Say to a Pop-Science Author
Playground Physics: Roller Slide Mystery
We took SteelyKid to the playground at one of the local elementary schools on Sunday morning. this one includes an odd sort of slide, made of dozens of rollers that are 1-2 inches in diameter (they’re all the same size– the range is just because I didn’t measure them carefully). They’re on really good bearings,… Continue reading Playground Physics: Roller Slide Mystery
Links for 2011-07-11
Thoughts on Cheating « Cooperative Catalyst “Don’t tell teachers, “whatever it takes,” and then act surprised when they follow that advice to its logical extreme. Don’t tell the principal, “you’ll lose your job and we’ll shut down the school if it doesn’t make AYP,” and then act surprised when the leadership finds ways to cheat.… Continue reading Links for 2011-07-11
Great Moments in Deceptive Graphs
This morning, via Twitter, I ran across one of the most spectacular examples of deceptive data presentation that I’ve ever seen. The graph in question is reproduced in this blog post by Bryan Caplan, and comes from this econ paper about benefits of education. The plot looks like this: This is one panel clipped out… Continue reading Great Moments in Deceptive Graphs
Links for 2011-07-10
Lisa Bloom: How to Talk to Little Girls “”Maya,” I said, crouching down at her level, looking into her eyes, “very nice to meet you.” “Nice to meet you too,” she said, in that trained, polite, talking-to-adults good girl voice. “Hey, what are you reading?” I asked, a twinkle in my eyes. I love books.… Continue reading Links for 2011-07-10
Daniel Abraham and Bizarre Quirks of Publishing
A little while back, I bought The Dragon’s Path by Daniel Abraham. Abraham is the author of the highly-regarded but not all that highly sold Long Price Quartet. I’ve heard nothing but good things about this, but I couldn’t get through the first book, for reasons that are entirely personal and no reflection on the… Continue reading Daniel Abraham and Bizarre Quirks of Publishing
Links for 2011-07-09
Ironic Effects of Anti-Prejudice Messages The authors conducted two experiments which looked at the effect of two different types of motivational intervention – a controlled form (telling people what they should do) and a more personal form (explaining why being non-prejudiced is enjoyable and personally valuable).In experiment one; participants were randomly assigned one of two… Continue reading Links for 2011-07-09