Edward Willett

Archives

Measurement

[podcast]http://edwardwillett.com/wp-content/upLoads//2009/11/Measurement.mp3[/podcast] “Inch-worm, inch-worm, measuring the marigolds...” Despite that line from a popular song, the fact is, inch-worms don’t measure anything. Neither to cockroaches, bulldogs, llamas or horned toads...because measurement is the process of counting how much of a sensory signal exists, and so far as we know, no other animals can count. Simply counting things wouldn’t itself count for much if we couldn’t communicate, though. Through language, we’re able to tell others what we have measured, which enables us to describe things we’ve seen, contract with others for trade or exchange, and control various processes. Just think about all the things you rely on measurement for. Your clothes were measured to fit your body. Your food is stored in a refrigerator whose temperature is ...

Posted by Edward Willett at 15:22, November 27th, 2009 under Blog, Columns, Science Columns | Comment now »

Measurement

A few weeks ago I wrote about the bicentennial of the metric system. This week I want to return to the topic of measurement because I had such an overwhelming response to that column. Our ability to measure sets us apart from, say, llamas and horned toads, because measurement is the process of counting how much of a sensory signal exists, and so far as we know, no other animals can count. Simply counting things in itself wouldn't count for much if we couldn't communicate, though. Through language, we're able to tell others what we have measured, which enables us to describe things we've seen, contract with others for trade ...

Posted by Edward Willett at 5:38, January 22nd, 1992 under Blog, Columns, Science Columns | Comment now »

The metric system

Two years ago, France marked the 200th anniversary of its revolution. It's no coincidence that just one year later we marked the 200th anniversary of another kind of revolution: the birth of the metric system. Whether this is a reason for celebration or mourning depends on how you feel about the System Internationale d'Units, the official name of the metric system. However, like it or not, the metric system is here to stay, and is almost universally used in science for the simple reason that scientists must have a common system of weights and measurements to be able to communicate their findings effectively--and that's exactly what the metric system was designed to provide....

Posted by Edward Willett at 16:06, December 11th, 1991 under Blog, Columns, Science Columns | Comment now »

Measuring temperature

G. D. Fahrenheit, Anders Celsius and William Kelvin may sound like prospects for the Roughriders' defensive backfield, but they probably wouldn't work out very well. For one thing, they're all dead. For another, they weren't football players, but scientists--and two of them, at least, are household names, which is far less common for scientists than for football players. What these three men have in common is that they all contributed a temperature scale to the world. This is a good way to get yourself remembered, because such scales are traditionally identified by their creators' names. Temperature is defined as the degree of hotness or coldness of a body (not that kind of body--a body in the ...

Posted by Edward Willett at 13:54, June 5th, 1991 under Blog, Columns, Science Columns | Comment now »