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[podcast]http://edwardwillett.com/wp-content/uploads//2011/12/Snow-Business.mp3[/podcast]
It’s hard to believe that, in 20-plus years of science column writing, I have (as far as I can tell) only ever written about snow once. After all, snow is as much a fact of life in Saskatchewan as sun, wind, and the Riders losing.
Perhaps there is a psychological reason for my avoidance of the topic of snow (and Rider losses), or perhaps it’s simply that it’s not very often there’s anything new to say about what we euphemistically call “the white stuff.”
But now there is! A scientist in California, of all places, has a lead on one of the great puzzles of snowflake science.
It’s not, as ...
Posted by Edward Willett at 9:14, December 8th, 2011 under Blog, Columns, Science Columns |
[podcast]http://edwardwillett.com/wp-content/upLoads//2011/08/Analog-and-Digital-TV.mp3[/podcast]
Technology changes, new ways of doing things driving out the old.
Take digital television. In fact, you’ll have to: by August 31, over-the-air television stations in most major Canadian cities are being required to stop broadcasting in analog and start broadcasting in digital.
Merriam-Webster defines analog as “of, relating to, or being a mechanism in which data is represented by continuously variable physical quantities.”
Digital, on the other hand, is defined as, “of or relating to the fingers or toes.” Wait a second, that can’t be right...oh, here we go: “of, relating to, or being data in the form of especially binary digits.”
A phonograph record is analog, the continuous, wriggly groove representing the ...
Posted by Edward Willett at 14:33, August 12th, 2011 under Blog, Columns, Science Columns |
[podcast]http://edwardwillett.com/wp-content/upLoads//2011/07/Event-Cloaking.mp3[/podcast]
It’s just possible you haven’t heard yet that the final Harry Potter movie, Harry Potter and the Deathly Hallows Part 2, has just been released...although if that’s the case you’re probably also living on another planet and aren’t reading this at all.
Harry Potter, boy wizard, makes very good use, over the course of the books and movies that bear his name, of an invisibility cloak. No such thing exists in our everyday world, of course, because his cloak is magic. Also (sorry to break it to you), Harry Potter is not real.
But as Arthur C. Clarke famously said (and I’ve repeated more than once in these columns), “Any sufficiently advanced technology is indistinguishable from magic.” And these days, technology is ...
Posted by Edward Willett at 15:18, July 15th, 2011 under Blog, Columns, Science Columns |
Posted by Edward Willett at 17:38, June 28th, 2011 under Blog, Columns, Science Columns |
[podcast]http://edwardwillett.com/wp-content/upLoads//2011/05/Visualizing-Musical-Vibrations.mp3[/podcast]
As the classic Disney animated film Fantasia opens, a symphony orchestra starts to play, and the music emerging from the instruments becomes visible as blasts of color and dancing shapes.
In real life, alas, music is primarily an auditory rather than visual experience. Although there is certainly interest to be had in watching a musician live (and, as I wrote recently, what we see may even influence our impression of the sounds produced, at least when it comes to percussionists), we’re generally able to enjoy music just fine, and sometimes better, without any visual component at all: hence the people you see closing their eyes at symphonies. (Not the snoring ones, ...
Posted by Edward Willett at 0:10, June 1st, 2011 under Blog, Columns, Science Columns |
[podcast]http://edwardwillett.com/wp-content/upLoads//2011/03/Basketball-Bank-Shots.mp3[/podcast]
Basketball skills ought to run in my blood. My father won multiple provincial high school basketball championships as coach of the Western Christian College Mustangs, and my brother was both a good player and championship-winning coach himself.
But, alas, basketball and I never got along very well. I could sort of dribble (if I didn’t also try to run) and sort of shoot (as long as nobody rushed me) but it was apparent early on that if there is a genetic component to being good at basketball, I was stuck in the shallow end of the gene pool.
Still, even if I can’t play basketball, I can uphold a bit of ...
Posted by Edward Willett at 14:14, March 10th, 2011 under Blog, Columns, Science Columns |
[podcast]http://edwardwillett.com/wp-content/upLoads//2011/02/Atomic-Oxygen-Art-Restoration.mp3[/podcast]
Whenever you visit an art museum that houses really old paintings, you may find yourself underwhelmed by their appearance. Case in point: the Mona Lisa. Although I haven’t seen it recently, when I did see it, back in the 1980s...well. It was small, dark, and hard to see inside its climate-controlled compartment.
That darkness dimming the famous smile dims many other old paintings. Over five centuries, the Mona Lisa has been plastered with layer upon layer of resin, lacquer and varnish that have darkened with age. Removing them has always been tricky, because each substance requires a different solvent, which in turn must not damage the paint that ...
Posted by Edward Willett at 11:13, February 25th, 2011 under Blog, Columns, Science Columns |
[podcast]http://edwardwillett.com/wp-content/upLoads//2011/01/Redefining-the-Kilogram.mp3[/podcast]
This year marks the 220th anniversary of something that grew out of the French revolution and yet sparked a revolution in my own life, and the lives of many other Canadians of a certain age, two centuries later.
I’m not talking about the guillotine, although it’s true I seem to vaguely remember a K-Tel commercial for something very much like a miniature guillotine for chopping carrots. (OK, I may be making that up, but it sure sounds like a K-Tel product!).
I’m talking about the metric system, the switch to which (called metrication) was a major feature of my teenage years, as Canada changed over and suddenly speed limits, food ...
Posted by Edward Willett at 10:47, January 28th, 2011 under Blog, Columns, Science Columns |
[podcast]http://edwardwillett.com/wp-content/upLoads//2010/06/A-Better-Way-to-Keep-Cool.mp3[/podcast]
We all have our preferred temperature. Me, I like it cool. My poor college roommate can attest to that, since I just about froze him out of our room, aided by the fact I was tall enough to easily reach the air conditioning controls and he wasn’t. But hey, that was in Arkansas, and in Arkansas in late summer, I needed all the air-conditioning I could get.
Humans, despite having originated in hot parts of the world, have long looked for ways to make buildings more comfortable in hot weather. The first attempts in the 19th century involved circulating air over blocks of ice, but modern air conditioning first had to await the invention of mechanical refrigeration.
Liquids absorb heat from their ...
Posted by Edward Willett at 13:09, June 24th, 2010 under Blog, Columns, Science Columns |
[podcast]http://edwardwillett.com/wp-content/upLoads//2010/06/The-Grills-of-Summer.mp3[/podcast]
We’ve had at least one nice day so far this spring, and based on previous years (although, of course, as they say about RRSPs, past performance is no guarantee of future results) we may get at least one more before first frost this fall, so there’s just a possibility a few people may break out their barbecues for some outdoor cooking in the near future.
In the U.S., the Memorial Day weekend at the end of May is seen as prime barbecuing time, which is probably why LiveScience, one of the science sites I frequent, recently answered that burning (sorry) question: “Why does grilled food turn black?”
But in order to build suspense, I’m going to refrain from answering that this early ...
Posted by Edward Willett at 14:57, June 7th, 2010 under Blog, Columns, Science Columns |