How Fast Is SteelyKid’s Nerf Gun?

SteelyKid, zombie hunter.

SteelyKid is spending a couple of days this week at “Nerf Camp” at the school where she does taekwondo. This basically consists of a bunch of hyped-up kids in a big room doing martial activities– taekwondo class, board breaking, and “Nerf war” where they build an obstacle course and then shoot each other with dart… Continue reading How Fast Is SteelyKid’s Nerf Gun?

Why Is Snow White?

Emmy, the Queen of Niskayuna, sitting in the snow hoping the camera will spit out some treats.

It didn’t make the news, because skittish media types are mostly based in New York City and thus don’t care about anything north of Westchester County, but we had a big snow storm yesterday. It started snowing Sunday night, though, and kept up through pretty much dinnertime Monday. Both the local schools and the snow-day… Continue reading Why Is Snow White?

Deflategate on Discovery Canada

I know I said I was done with this story, but this was actually recorded last week: The Daily Planet show on Discovery Channel in Canada contacted me last week when all this deflated-football silliness was exploding, and got a cameraman to come over and record me talking about it. The episode aired Monday night,… Continue reading Deflategate on Discovery Canada

Deflategate: The Final Chapter

The low-level cold I’ve been nursing for a month now finally exploded into the full unpleasantness of my usual winter illness Saturday, or else I would’ve been more active following up on my Deflategate article and my ideal gas law post. As it was, for most of the day, I could barely keep on top… Continue reading Deflategate: The Final Chapter

Tom Brady and the Ideal Gas Law: Physics of Deflategate

The experimental pressure measurements, with one of the cold footballs.

So, as mentioned yesterday, I got an email asking me about the weird scandal involving the Patriots and underinflated footballs, so I wrote a piece for the Conversation on the subject. since a few people had beaten me to citations of the Ideal Gas Law, though, I decided to bring my own particular set of… Continue reading Tom Brady and the Ideal Gas Law: Physics of Deflategate

Football Physics and the Science of Deflate-gate

One of the cool things about working at Union is that the Communications office gets media requests looking for people to comment on current events, which sometimes get forwarded to me. Yesterday was one of those days, with a request for a scientist to comment on the bizarre sports scandal surrounding the deflated footballs used… Continue reading Football Physics and the Science of Deflate-gate

Thermal Thursday: How Good Is My Mug?

Thermal image of my metal water bottle (left) and my insulated coffee mug, both half-full with hot water. Taken with a Seek Thermal camera on my Android phone.

One of my favorite Christmas presents this year was a Seek Thermal camera to use with my Android phone. This allows for a lot of idle physics-y fun, taking pictures of things in thermal mode. One idea I had was to do a sort of follow-up to the test of my insulated mug that I… Continue reading Thermal Thursday: How Good Is My Mug?

Holiday Thermal Physics

The Christmas pyramid centerpiece seen in the thermal video, in normal visible light.

One of my Christmas gifts this year was a Seek Thermal camera, so I can continue my transformation into Rhett Allain. What’s this for? Why, physics, of course. Such as this video of the operation of the Christmas pyramid my parents picked up in Germany, and had set up at the start of Christmas dinner:… Continue reading Holiday Thermal Physics

Playground Physics: Angular Momentum, Video Homework

SteelyKid helping me demonstrate angular momentum.

I’m teaching relativity in a course with an astronomy prefix, which means I’m obliged to talk about stars and stuff. Yesterday’s lecture was about neutron stars, and how their existence was confirmed by the discovery of pulsars (with the story of Jocelyn Bell Burnell included). This requires some discussion of angular momentum to explain how… Continue reading Playground Physics: Angular Momentum, Video Homework

Relativity and Baseball

A baseball deforming as it hits the bat of Miguel Cabrera, from NESN.

It’s baseball playoff time, so sport shows are full of one of the great mysteries of the season, exemplified by this .gif (from SBNation): No, not “Raul Ibanez, really?” but “How can he make the ball go that far?” After all, even very good outfielders are lucky to reach home plate with a throw from… Continue reading Relativity and Baseball