Relativity

Category archives for Relativity

Hey, you might not know this, but I wrote a book… The official release date for How to Teach Relativity to Your Dog isn’t until Tuesday, but a friend reported buying a copy in Missouri, so when I was headed out to do some work this afternoon, I went to the cafe at the local…

On Neutrinos and Cables

It’s not a good week for me to be writing about anything remotely controversial, but if I want to keep my physics blogging license, I need to say something about the latest fast neutrino news. This has followed the usual trajectory of such stories, with the bonus farcical element of people who blasted the media…

Looking for the Bacon Boson

I’m grading exam papers at the dining room table when Emmy trots in. “Hey, dude,” she says. “Where do we keep the superconducting wire?” I’m not really paying attention, so I start to answer before I understand the question. “Hmm? Wire is in the basement, next to the–wait, what?” “The superconducting wire. Where do we…

So, the big How to Teach Physics to Your Dog Photoshop contest concluded on Friday. We got five really good entries, and the judges (me and Kate) had a hard time reaching a decision. After long deliberation, though, we’ve come up with a solution. But first, the entries:

Through a weird quirk of scheduling, I haven’t actually taught the intro modern physics course since I started writing pop-science books about modern physics. So, this week has been the first chance I’ve really had to use material I generated for the books to introduce topics in class. In the approximately chronological ordering of the…

A quick reminder: How to Teach Relativity to Your Dog (cover in the left sidebar) will be released at the end of the month. If you’d like to win a signed copy early, though, you can enter our Photoshop contest. Just edit a picture of Emmy into another picture having something to do with physics.…

It’s now officially February, and the release date for How to Teach Relativity to Your Dog is only a few weeks off– the official release date is Feb. 28. Of course, I’ve got a copy already: If you would like a copy of your very own, you can either wait until the release, or take…

End of Year Self-Promotion

I will eventually do a “Year in Blog” post with a bunch of links to top posts and so on, but not until the year is actually over. At the moment, I’m too busy prepping next term’s class to do all the link chasing. That doesn’t mean I can’t engage in a little self-promotion, though.…

A week and a half ago, when the advent calendar reached Newton’s Law of Universal Gravitation, I said that it was the first equation we had seen that wasn’t completely correct. Having done our quick swing through quantum physics, the time has come to correct that equation: If you say “Einstein equation” to a random…

Moving along in our countdown to Newton’s birthday, we start to deal with equations that Sir Isaac never would’ve seen, because they deal with more abstract quantities than he worked with. The first and in some ways most important of these is energy: This is the full and correct expression for the energy of a…