As noted in previous posts, I’ve been trying something radically different with this term’s classes, working to minimize the time I spend lecturing, and replace it with in-class discussion and “clicker questions.” I’m typing this while proctoring the final exam for the second of the two classes I’m teaching, so it’s not exactly the end,… Continue reading Active Learning Experiment: Nearly the End
Category: Physics
Fast Neutrinos: Still Fast
One of the more reasonable criticisms of the OPERA result showing neutrinos apparently moving faster than light was that they were claiming 20-nanosecond resolution on the timing of a neutrino pulse that was 10000 nanoseconds long. They got their timing by doing fits to the shape of the whole pulse, as described in that link,… Continue reading Fast Neutrinos: Still Fast
O Brave New-Media World That Has Such Bloggers In It
I’ve been incredibly busy this term, but not so busy I couldn’t create more work for myself. Specifically, by writing an opinion piece for Physics World about the FTL neutrino business, that just went live on their web site: The result quickly turned into one of the most covered physics stories of the year, with… Continue reading O Brave New-Media World That Has Such Bloggers In It
Because 4% of the Energy Controls 100% of the Photons
“I work around the clock– 1043 Planck times per second– providing the gravitational attraction to hold this galaxy cluster together. And some baryonic cosmologist wants to explain me away as a modification of Newtonian gravity? “I have been silent for 13.7 billion years, but no more. “I AM THE 96%” (Original Pandora Cluster image from… Continue reading Because 4% of the Energy Controls 100% of the Photons
Strongly Correlated Physics in a Superposition State
It’s been a while since I posted anything science-y, and I’ve got some time between flipping pancakes, so here’s an odd thing from the last few weeks of science news. Last week, there was an article in Nature about the wonders of string theory applied to condensed matter physics. This uses the “AdS/CFT” relationship, by… Continue reading Strongly Correlated Physics in a Superposition State
Experimentalists Aren’t Idiots: The Neutrino Saga Continues
In a lot of ways, the OPERA fast-neutrino business has been less a story about science than a story about the perils of the new media landscape. We went through another stage of this a day or two ago, with all sorts of people Twittering, resharing, and repeating in other ways a story that the… Continue reading Experimentalists Aren’t Idiots: The Neutrino Saga Continues
Active Learning Experiment: The Halfway Point
Tuesday was the last day of the fifth week of classes (out of ten; for reasons that passeth all understanding, we started on Wednesday, so all the week-based deadlines fall on Tuesday). Accordingly, it seems like a decent time for an update on the active learning stuff I’ve been doing in my classes. Each class… Continue reading Active Learning Experiment: The Halfway Point
Shameless (if Belated) Self-Promotion: Me on the Radio
If you want to know how stressed and busy I’ve been lately, you don’t have to look any farther than the fact that I’ve totally fallen down on the shameless self-promotion front: I was on a radio show, and forgot to post about it here. I know, bad blogger, no pageviews… Anyway, I talked about… Continue reading Shameless (if Belated) Self-Promotion: Me on the Radio
Congratulations to Perlmutter, Schmidt and Riess, and also Evan and Cusp
The 2011 Nobel Prize in Physics goes to Saul Perlmutter, Brian P. Schmidt and Adam G. Riess “for the discovery of the accelerating expansion of the Universe through observations of distant supernovae.” Ethan will presumably have a post with about a gigabyte worth of images in it shortly, or if you prefer your information in… Continue reading Congratulations to Perlmutter, Schmidt and Riess, and also Evan and Cusp
Faster Than a Speeding Photon: “Measurement of the neutrino velocity with the OPERA detector in the CNGS beam”
There have been a lot of pixels spilled over this faster-than-light neutrino business, so it might not seem like something I should take time away from pressing work to write up. It is the story of the moment, though, and too much of the commentary I’ve seen has been of the form “I am a… Continue reading Faster Than a Speeding Photon: “Measurement of the neutrino velocity with the OPERA detector in the CNGS beam”