Links for 2010-08-21

Swans on Tea » Politics and the Star Trek Effect “There are a couple of episodes of Star Trek that I can recall having some fundamental physics failures, which would lead one to believe that in the Star Trek universe, one cannot do an integral over time. The episodes that come to mind (and it’s… Continue reading Links for 2010-08-21

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How Many Physics Professors Does It Take?

Johan Larson emails a suggestion for a post topic: How many profs would it take to offer a good, but not necessarily excellent, undergraduate physics degree? I can give you an empirical answer to this: Six. I say that because in the course of my undergraduate physics degree at Williams, I took classes from only… Continue reading How Many Physics Professors Does It Take?

The Science Mindset List

It’s nearly time for classes to resume, which means it’s time for a zillion stories about Beloit College’s annual Kids These Days List, listing off a bunch of things that this year’s entering college class, who were mostly born in 1992, have always taken for granted. A sample: 1. Few in the class know how… Continue reading The Science Mindset List

Why Antibunching Equals Photons

In my post about how we know photons exist, I make reference to the famous Kimble, Dagenais, and Mandel experiment showing “anti-bunching” of photons emitted from an excited atom. They observed that the probability of recording a second detector “click” a very short time after the first was small. This is conclusive evidence that photons… Continue reading Why Antibunching Equals Photons

Links for 2010-08-20

An 18 Billion Mile Journey is almost complete! : Starts With A Bang In honor of the upcoming completion of Neptune’s first full orbit since its discovery, a discussion of how it was found. (tags: science astronomy planets blogs starts-with-bang) Fixing a Hole: The Beatles’ Imaginary Post-1970 Albums, Part 1 | Popdose “I’m actually quite… Continue reading Links for 2010-08-20

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Thursday Toddler Blogging 081910

Many of SteelyKid’s first words have been transportation-related (“Truck! Vroom Vroom!”), which makes the four-level wooden parking garage she got from her Aunt Erin even more awesome. And it’s pretty awesome: As you can see, she grasped the idea almost immediately. That’s from last night, after we got it put together. Below the fold, you… Continue reading Thursday Toddler Blogging 081910

Media Skills for Scientists

Everybody’s favorite science-and-politics blogger has posted a video clip showing part of what’s wrong in science communication. It’s a clip from the BBC from last December, featuring one of those head-to-head quasi-debates about “Climategate” between Prof. Andrew Watson of the University of East Anglia and political consultant Marc Morano, who has made himself a nice… Continue reading Media Skills for Scientists

Waves: Moving Without Going Anywhere

At the tail end of Tuesday’s post about wind and temperature, I asked a “vaguely related fun bonus question:” If the air molecules that surround us are moving at 500 m/s anyway, why isn’t the speed of sound more like 500 m/s than 300 m/s? This is another one that people are sometimes surprised by.… Continue reading Waves: Moving Without Going Anywhere