Uncategorized
- Math
Tilt-A-Whirl Chaos (I)
Tilt-A-Whirl. Sellner Manufacturing Co. Schematic drawing (top view) showing the Tilt-A-Whirl’s geometry. Much of the fun of an amusement park ride results from its stomach-churning, mind-jangling unpredictability. The Tilt-A-Whirl, for example, spins its passengers in one direction, then another, sometimes hesitating between forays and sometimes swinging abruptly from one motion to another. A rider never […]
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19095
In doing your usual excellent job of presenting information in interesting and lighthearted ways, you implied that bug zappers control mosquitoes. In fact, bug zappers don’t attract mosquitoes and therefore kill very few of them. They do kill large numbers of harmless and even beneficial insects, including pollinators and insects such as the crane fly, […]
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