Smashing Stuff and Making Ice Cream

Union students Andrew, Harrisonn, Beka, Matthew, and Shauna doing liquid nitrogen demos for visiting second-graders.

A few weeks back, a Union alumnus who works at Troy Prep contacted the college to arrange a visit for a bunch of second-graders, and asked if faculty would be willing to arrange talks and demos for the kids. I said something like “Sure, we could probably make liquid nitrogen ice cream for them,” and… Continue reading Smashing Stuff and Making Ice Cream

Cosmos and the Sideburns

Michael Faraday, image from wikimedia.

Last night’s episode of the Cosmos reboot focused on one of the three physicists whose pictures Einstein kept in his office: Michael Faraday. I’m a big fan of Faraday, who famously started his career as a bookbinder’s apprentice reading the books brought into the shop, and ended as one of the greatest experimental physicists of… Continue reading Cosmos and the Sideburns

“Gen Ed” Relativity: Pondering Books

Poster advertising next fall's "gen ed" class on relativity.

This coming fall term, I’ll be teaching Astronomy 052, “Relativity, Black Holes, and Quasars,” because the guy who has traditionally taught it (a radio astronomer who studies active galactic nuclei) has to do other courses instead. But I said “Well, hell, I’ve written a popular audience book explaining relativity. I can teach that.” And since… Continue reading “Gen Ed” Relativity: Pondering Books

Space Travel, Einstein, and GPS

Slide from my talk at Space Center Houston.

Below you’ll find the slides from my Physics Day presentations at Space Center Houston, embedded via SlideShare. I was doing the TED-style minimal text thing, so they’re probably not all that comprehensible on their own. The event was supposed to have a pop-culture connection, so I decided to use space travel and extrasolar planets as… Continue reading Space Travel, Einstein, and GPS

Messing With Texas

Slide from my talk for this week in Houston.

I had hoped to have another post or two scheduled for the end of this week, but The Pip got some kind of stomach bug, and threw everything into disarray. And tonight, I’m flying to Houston to give a couple of talks as part of Physics Day at Space Center Houston. Life being what it… Continue reading Messing With Texas

SteelyKid Demonstrates Relativity

SteelyKid tosses a ball to demonstrate Galileian relativity.

Before going to the playground Saturday to investigate non-intertial frames, SteelyKid and I went over to campus to do some experiments in relativity. Galileian relativity, that is: What you see here is SteelyKid sitting on a rolling lab cart with a camera bolted to it. She throws a ball up in the air a couple… Continue reading SteelyKid Demonstrates Relativity

Cosmos and the Women

Cartoon people form the cosmos reboot, from http://www.trueanomalies.com/taking-no-snark-to-the-next-level/

Back when the first episode of the Cosmos reboot aired, somebody put together a composite of the cartoon people who flashed on screen, and we played a guessing game on Twitter. The image above is from a blog post by Meg at True Anomalies, and I think it was probably her, but the ephemeral nature… Continue reading Cosmos and the Women

Flame Challenge Finalists 2014: What Is Color?

The finalists for the 2014 “Flame Challenge” have been selected, three written entries and three visual entries. None of these is my entry, alas, but it was worth a shot. I watched the videos last night, and it was sort of interesting to compare what ended up working well with the test audience of 11-year-olds… Continue reading Flame Challenge Finalists 2014: What Is Color?

Cosmos Reboot: On Light

Illustration of double-slit interference, from slides for one of my public talks.

Another Monday, another recap of a new episode of the Cosmos reboot. This one was all about optics, and much of it was excellent. This was in part due to the fact that its first couple of historical segments focused on non-Western figures, and I don’t know as much about their background to be able… Continue reading Cosmos Reboot: On Light