Video

Category archives for Video

Breaking Boards

One of the highlights of teaching introductory mechanics is always the “karate board” lab, which I start off by punching through a wooden board. That gets the class’s attention, and then we have them hang weights on boards and measure the deflection in response to a known force. This confirms that the board behaves like…

One of the points I make repeatedly in teaching introductory mechanics (as I’m doing this term) is that absolutely every problem students encounter can, in principle, be solved using just Newton’s Laws or, in the terminology used by Matter and Interactions, the Momentum Principle. You don’t strictly need any of the other stuff we talk…

Ain’t No Party Like a SteelyKid Party

I’ve mentioned in a few places that SteelyKid frequently comes home from school/ camp/ day care singing garbled versions of current pop hits. So for the first time since about 1990, I added a Top 40 station to my car radio presets, so I would know what she was actually trying to sing. This leads…

Holiday Thermal Physics

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:…

Eureka: Collecting the Origin

Almost everybody, regardless of what side they favor in the culture wars, knows that Charles Darwin was the first scientist to come up with the theory of evolution. At least, they think they do. In fact, lots of people had the general idea long before Darwin, including his own grandfather. We remember Darwin not because…

High Precision, Not High Energy: Video

Back in August, I gave a talk in Stockholm at the Nordita workshop for science writers, about precision measurement searches for physics beyond the Standard Model. There’s now video of this online: The video quality isn’t great, but if you’d like a clearer look at the slides, I’ve posted them on SlideShare. The talk was…

Eureka: Bridge to Dark Matter

The first time you hear about dark matter, it sounds kind of crazy– asserting that we’re surrounded by tons of invisible stuff is usually a good way to get locked up. But the process of its discovery is surprisingly ordinary: it’s just what you do when you play cards. Here’s the second green-screen video I’ve…

Eureka: Quantum Crosswords

My new book comes out one month from yesterday, or four weeks from tomorrow. Of course, yesterday was Sunday, and tomorrow’s a federal holiday, both lousy times for promotional posts, so I’ll drop this in today instead. Here’s a promotional video I put together, about how the history of quantum mechanics can be compared to…

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…

Entangled States at TED-Ed

The fourth video I wrote for TED-Ed is now live: Einstein’s Brilliant Mistake: Entangled States. The title is not just an Elvis Costello reference, but gets at the fact that while the Einstein, Podolsky, and Rosen paper was wrong in that the local hidden variable theories they favored are impossible, it turned out to be…