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This Sunday in Vancouver, thousands of people will gather to watch an impressive demonstration of momentum, mass, drag and other basic physics provided by highly trained specialists from Hamilton and Calgary. This scientific exposition is called "the Grey Cup."
One interesting demonstration will be the forward pass. A football moving through the air has inertia--the universal tendency of objects in motion to remain in motion (and objects at rest to remain at rest). If not for gravity and air resistance, it would simply sail away in a straight line and never come down.
Gravity, however, pulls the ball down from the moment it leaves the quarterback's hand. The quarterback's goal is to balance the ...
Posted by Edward Willett at 22:39, November 24th, 1999 under Blog, Columns, Science Columns |
The Grey Cup in Regina is over. You could tell the day after the game by the number of people wandering around with dazed expressions and bags under their eyes...which inspired me to write this week about two souvenirs of the festivities almost everyone picked up: fatigue and/or a hangover.
Fatigue is characterized by an inability to perform tasks as well as usual, and it comes in many different types. There's muscle fatigue: hard use of muscles results in a build-up of lactic acid and a familiar aching feeling that eventually becomes pain and results in an inability of the muscles to perform as you'd like them to. Mental fatigue results from hard ...
Posted by Edward Willett at 11:25, November 20th, 1995 under Blog, Columns, Science Columns |
In case you haven't heard, there's a little football game being played over at Taylor Field next Sunday between a team from Calgary and a team from Baltimore. Canadian football is known as a pass-happy game, so I thought I'd delve into the aerodynamics of a flying football.
Football aerodynamics, however, isn't something you just look up in an encyclopedia. Instead, I got on the World Wide Web, did a search for "football" and "aerodynamics," and immediately came up with Dr. Peter Lissaman, Adjunct Professor of Aerodynamics at the University of Southern California and one of the world's leading experts in the aerodynamics of spinning objects. (In fact, he just recently gave a ...
Posted by Edward Willett at 22:38, November 13th, 1995 under Blog, Columns, Science Columns |
The Grey Cup just ended, but the Rose, Cotton, Orange and Super Bowl are still to come. It therefore seems apt to delve into a subject with which I have a great-deal of hands-on experience: the Three Ps of snack food, potato chips, popcorn and pretzels.
Potato chips were invented in a Saratoga, New York, restaurant in 1853, when millionaire Cornelius Vanderbilt complained that his fried potatoes were too thick. Annoyed, the cook cut the next batch paper-thin. Vanderbilt loved them, and "Saratoga Chips" became hugely popular.
Today, potato chips are made in factories, not restaurants. When the potatoes arrive (and one out of every eight or nine harvested goes to a potato chip factory), their skins are ...
Posted by Edward Willett at 20:47, November 29th, 1993 under Blog, Columns, Science Columns |