Explosions, Fireballs in Virginia Skies May Have Been Russian Rocket
The mysterious boom and flash of light seen over parts of Virginia Sunday night was not a meteor, but actually exploding space junk from the second stage of a Russian Soyuz rocket falling back to Earth, according to an official with the U.S. Naval Observatory.
For the record, it’s Geoff, not Jeff. Silly Journalists.
Pick me! Pick me! Adopt-a-physicist is running again this spring. Registration/sign-up is open as of today, with the forums open April 13 – May 1.
Help high school students explore what it’s really like to be a physicist – consider participating in Adopt-a-Physicist! In this program, people with physics degrees (at any level) are “adopted” by high school classes interested in finding out about the careers, educational backgrounds, and lives of real physicists.
A correction from an LA Times story editorial
Solar power: A Friday editorial said that according to the U.S. Energy Department, enough sunlight hits a “100-square-mile” portion of the Nevada desert to power the entire country. It should have said “100-miles-square.”
The commentary: On square miles
I’d argue that “square miles” and “square kilometers” really have no place in popular journalism, because we have little connection to what they mean.
As humans, we never travel a “square mile.” We travel a mile. Or ten miles. If we’re thinking about an area of land, we’re probably mentally walking along two of its edges — which is what the LA Times and the U.S. Department of Energy were doing.
What you mean “we?” While the statement may be true (for some people), I’d argue that it’s an issue of mathematical/scientific literacy. Eliminating the use of area is to lower the bar of what we expect of journalists and readers of journalism. I never travel a cubic meter, either, but use of volume has its place — we don’t need to describe a liter as 10 cm on a side. We’re used to volume measurement, even if we in the US have an overall aversion to metric except when applied to some beverage containers. Why aren’t we used to areas — is it the name? Would “acres” be better, to avoid the “square” business?
The proposed solution includes giving an example, though, and giving a reference for scale is a good idea.
I was waylaid by dust bunnies yesterday. It started in the lab; I was exposing the fresh layer of sticky mats as I usually do, and noticed that the air disturbance (quite a flourish if you want to get the sheet up in one motion) had sent some dust bunnies scurrying. I tracked them down and captured them with an unused section of the mat, but they really shouldn’t be in the lab at all — that’s what the mats are for. We don’t let the cleaning crew in, because of safety issues and the potential for damage. But the mats have proven to be stronger than the floor, and the tile has been failing, so there are areas that have been mat-less for a while, and that has helped the bunnies thrive. I bought some frames (non-skid backing rather than adhesive) for the mats, so the mats can be reintroduced. Open season on dust bunnies! My colleague that signed the receipt for the mat frames said, “Mat frames. Cool!” Sure. He’s the one playing with the pulsed laser.
So I get home, and there’s a dreaded “Can’t connect to the internet” error on the computer. So I went searching for the likely suspects — cycle power on the modem and router, and then recheck all of the connections. Which requires some crawling around in places that have more dust bunnies! I had to wield the bunny-buster to ensure I got out alive. Turns out my phone jack had died, so no more DSL from there. I had to move the model and router to another room, and now I’m relying on wireless (and had some trouble with the router. Obviously an ally of the bunnies)
Time-Lapse Video: Retreating Glacier
This remarkable image sequence captures a series of massive calving events at Columbia Glacier near Valdez, Alaska. Composed of 436 frames taken between May and September of 2007, it shows the glacier rapidly retreating by about half a mile (1.6 kilometers), a volume loss of some 0.4 cubic miles (1.67 cubic kilometers) of ice or 400 billion gallons (1.5 trillion liters) of water.