AY Honors/Ultimate Disc/Answer Key

A Wham-O Professional Frisbee

While the word Frisbee is a registered trademark of the Wham-O toy company, the term is often used generically to describe flying discs similar to those made by the company. They are generally plastic, roughly 20 to 25 centimeters (8–10 in) in diameter, with a lip. They are designed to fly aerodynamically when thrown with rotation and can be caught by hand.

Basic Throws are strongly recommended whilst playing this exciting game! Trick throws ruin frisbee, and are seen as a problem by most players, certain rules can be brought in to stop these wreckers. A wide range of Frisbee (flying Discs) variants are available commercially. Disc golf discs are usually smaller but denser and are tailored for particular flight profiles to increase/decrease stability and distance. When it was discovered that dogs enjoyed chasing and retrieving the slow-moving discs, special discs were designed with more pliable material that would better resist a dog's bite. Disc dog competitions, in which dogs' disc-catching skills are judged, have become quite popular as well. Ring-like discs shaped like a Saturn's ring, known as Aerobies, typically fly significantly farther than any traditional flying disc. The evolution has continued with the advancement of lighting a flying disc for evening and night-time play. By using a Flashflight disc, players can extend the throw and catch playing time after the sun goes down.

History

The modern day frisbees are developed from the "Flying-Saucer", originally invented by Walter Frederick Morrison and codeveloped and financed by Warren Franscioni in 1948. However, that initial disc was largely unsuccessful. A later model made by Morrison in 1955 and sold as the "Pluto Platter" was bought by Wham-O on January 13, 1957. In the next year, Wham-O renamed the toy "Frisbee", a (probably deliberate) misspelling of the name of the Frisbie Pie Company of Bridgeport, Connecticut, whose pie tins had been used by Yale University students in the campus for similar purposes.

Games using flying discs

Ultimate
Freestyle frisbee
Guts
Disc Golf - the traditional game of Golf played with flying discs (frisbees) instead of clubs and balls.
Durango Boot
DDC
Flutterguts, also known as Flutter Frisbee
Friskee
Disc dog
Dodge Frisbee
Goaltimate
Schtick
Fricket, also known as Cups
Hot Box
Suzy Sticks

Physics

The rotating flying disc has angular momentum perpendicular to the horizontal plane, stabilizing the disc's attitude in high-speed flight. Small ridges near the leading edge act as turbulators, reducing flow separation by forcing the airflow to become turbulent after it passes over the ridges. Lift is generated in primarily the same way as a traditional asymmetric airfoil, that is, by accelerating upper airflow such that a pressure difference gives rise to a lifting force.

Richard Feynman in his book Surely You're Joking, Mr. Feynman! suggests that watching the wobble of a plate tossed in the MIT cafeteria stimulated him to develop mathematics that eventually led to his Nobel prize winning work in quantum electrodynamics [1].

External links

cs:Frisbee da:Frisbee de:Frisbee eo:Flugdisko fr:Frisbee it:Frisbee nl:Frisbee ja:フライングディスク no:Frisbee pl:Frisbee sk:Frisbee sv:Frisbee es:Frisbee

AY Honors/Ultimate Disc/Answer Key

Contents

History

Games using flying discs

Physics

See also

Further reading

External links