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It's summertime in Saskatchewan, and that means the roads are full of joggers, walkers--and bicyclists.
The first bicycle was the "celerifere," or wooden horse, invented in France in the 1790s. It had a fixed front wheel, so it couldn't be steered, and the rider propelled it by pushing his feet along the ground, like Fred Flintstone.
A German baron, Karl von Drais, added a steerable front wheel in 1817, creating the "draisienne," or dandy horse. In 1839, Kirkpatrick Macmillan, a Scottish blacksmith, added pedals which drove the rear wheel by means of cranks.
In the 1860s the French invented the velocipede, on which the pedals were attached directly to the front wheel, so that once ...
Posted by Edward Willett at 11:35, July 3rd, 2001 under Blog, Columns, Science Columns |
I wouldn't call myself a "serious" cyclist, since I don't wear neon Spandex shorts and top, a colour-coordinated helmet, leather gloves or fancy cycling shoes. Heck, I don't even have a water-bottle. But I do cycle a bit, and as I was puffing my way along the bike path the other day it seemed to me the time was ripe to write about the science of cycling. (Besides, I'm a sucker for alliteration.)
The first step in the development of the bicycle was the "celerifere," or wooden horse, invented in France in the 1790s. It had a fixed front wheel, so it couldn't be steered, and the rider propelled it by pushing his ...
Posted by Edward Willett at 11:33, November 8th, 1993 under Blog, Columns, Science Columns |