Course Report: Formal Quantum Mechanics

I left off last time with a brief introduction to uncertainty, followed by two classes worth of background, both mathematical and Mathematica. Class 15 picked up the physics again, starting with an explanation of the connection between the Fourier theorem and uncertainty, namely that any attempt to construct a wavefunction that has both particle and… Continue reading Course Report: Formal Quantum Mechanics

Journalists Are Amplifiers

A few days ago, Bee put up a post titled Do We Need Science Journalists?, linking back to Bora’s enormous manifesto from the first bit of the Horgan-Johnson bloggingheads kerfuffle. My first reaction was “Oh, God, not again…” but her post did make me think of one thing, which is illustrated by Peter Woit’s latest… Continue reading Journalists Are Amplifiers

Happy News Open Thread

I’ve been a Grumpy Blogger this week, what with one thing and another (some of my general malaise has finally resolved into a cold, which I suspect explains a lot). I’m headed to Boskone for the weekend, though, so let’s end the week on a positive note. I’m declaring this a Happy News Open Thread:… Continue reading Happy News Open Thread

The Purpling of Blogdom

Williams has long held a dominant position in a number of categories of blogging: Dan Drezner on economics and politics, Marc Lynch on the Middle East, Ethan Zuckerman on the developing world and really cool conferences, Derek Catsam on history and Red Sox fandom, yours truly on canine physics. And I’m sure I’m forgetting several… Continue reading The Purpling of Blogdom

Two Cultures in Beginnings and Endings

Not long after I posted my comments about textbook prices, I went to a panel discussion on teaching, where a social scientist made an interesting observation about the ways different disciplines interact with books. In the humanities, the whole point of the class is to discuss the books. Nothing useful can be done until and… Continue reading Two Cultures in Beginnings and Endings

Science and Sociology of Dark Matter

There’s a new paper from the PAMELA dark matter search out that’s written up in Physics, including a link to a free version of the PDF. This paper is considerably less dramatic than one that appeared last year, leading Physics World to suggest that they’re backing off the earlier claim. What’s the deal? Sean Carroll… Continue reading Science and Sociology of Dark Matter

The Swashbuckling Physicist’s Guide to Complex Numbers

Having mentioned this a few times in course reports, I thought I’d throw out a link to my lecture notes (PDF) on complex numbers. This is the one-class whirlwind review of complex numbers from defining i to Euler’s theorem about complex exponentials. To answer a slightly incredulous question from a commenter, this is necessary because… Continue reading The Swashbuckling Physicist’s Guide to Complex Numbers