A Rock the Size of Jupiter?

Cassini-Huygens image of Jupiter, from Wikipedia. http://en.wikipedia.org/wiki/File:Jupiter_by_Cassini-Huygens.jpg

For some reason, the topic of really big rocks came up at dinner the other night, and SteelyKid declared that she wanted to find “A rock as big as the solar system.” We pointed out that that was pretty much impossible, more or less by definition, rocks being sub-parts of the solar system. “OK, how… Continue reading A Rock the Size of Jupiter?

Uncertain Dots 17

After a bit of a hiatus because of scheduling issues, Rhett and I are back to talk about… stuff. Mostly summer classes, World Cup soccer, and Twitter. Also, how we’ve each gotten a blog comment from Neil deGrasse Tyson. Miscellaneous links: — My long-ago book review and Rhett’s more recent complaint about Cosmos, where we… Continue reading Uncertain Dots 17

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

Hugo Nominated Short Fiction: A Great Year for “No Award”

As previously noted, I’m going to the Wordlcon in London this August, and as such will be voting on this year’s Hugo Awards. The publishers provided a packet with at least bits of all the fiction nominees, so I’ve been reading through them at bedtime, and over the weekend finished all the regular nominees– I… Continue reading Hugo Nominated Short Fiction: A Great Year for “No Award”

Read Science! on Dog Physics

As noted earlier, I was a guest on the Read Science! hangout on G+ earlier today. If you weren’t able to watch it live, the video is available at that link, and I’ll embed it here: There were some feedback problems with the audio for a little while– annoyingly, it only got bad once the… Continue reading Read Science! on Dog Physics

Dog Physics on the Read Science! Hangout Today

Rhett and I haven’t done Uncertain Dots for a couple of weeks due to scheduling issues, but that doesn’t mean I’m neglecting the multimedia side of things. In fact, I’ll be doing a hangout today, as a guest on the Read Science! hangout hosted by Joanne Manaster and Jeff Shaumeyer. The event page is here.… Continue reading Dog Physics on the Read Science! Hangout Today

On Black Magic in Physics

The latest in a long series of articles making me glad I don’t work in psychology was this piece about replication in the Guardian. This spins off some harsh criticism of replication studies and a call for an official policy requiring consultation with the original authors of a study that you’re attempting to replicate. The… Continue reading On Black Magic in Physics

Father’s Day 2014

according to SteelyKid I am as tall as a seeling (ceiling) and as strong as a grilau (gorilla).

Today is Father’s Day in the US, so I got a bunch of little gifts from the kids. The Pip’s was just a construction-paper card mostly made by his teachers, with a bit of scribble on it. SteelyKid’s, though, included a fill-in-the-blank booklet that she wrote on and drew pictures to go with. Some of… Continue reading Father’s Day 2014

The Problems of the GRE

Graph from the Nature Jobs article showing GRE scores for various demographic groups.

A bunch of people were talking about this Nature Jobs article on the GRE this morning while I was proctoring the final for my intro E&M class, which provided a nice distraction. I posted a bunch of comments about it to Twitter, but as that’s awfully ephemeral, I figured I might as well collect them… Continue reading The Problems of the GRE