Google is great. Okay, I'm wrong. I'm in good company though. Galileo also though that a catenary was a parabola. Hyperbola is done with 3 pins, not two. http://jwilson.coe.uga.edu/EMT668/EMT668.Folders.F97/Waggener/Units/ Conic%20Sections/Conic%20Plans/demoideas.htm
On Wednesday, January 29, 2003, at 03:39 PM, David Brodbeck wrote: > That'd be a caternary curve. I don't know if they're hyperbolics or > not. > I'm pretty sure there's a way to do it that involves the string being > tight. I know you can do an ellipse that way, but I can't remember the > details. Involves two pins and a loop of string, I think. |
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