Frisbees Ewald
History <ul><li>Invented by Walter Frederick Morrison </li></ul><ul><li>Early model called “Pluto Platter” </li></ul><ul><...
How do they fly? <ul><li>Bernoulli Principle </li></ul><ul><ul><li>More air pressure under than on top causes lift </li></...
 
Angular Momentum <ul><li>Rotating body’s resistance to change in orientation and rate of rotation </li></ul><ul><li>In Fri...
Impact <ul><li>Kids are outside more </li></ul><ul><li>College campus’ are able to create perfect pictures of their school...
References <ul><li>&quot;Frisbee.&quot;  St. James Encyclopedia of Popular Culture . 5 vols. St. James Press, 2000. Reprod...
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Frisbees

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Frisbees

  1. 1. Frisbees Ewald
  2. 2. History <ul><li>Invented by Walter Frederick Morrison </li></ul><ul><li>Early model called “Pluto Platter” </li></ul><ul><li>Wham-O began selling them in 1957 </li></ul><ul><li>Over 200 million have been sold since then </li></ul>
  3. 3. How do they fly? <ul><li>Bernoulli Principle </li></ul><ul><ul><li>More air pressure under than on top causes lift </li></ul></ul><ul><ul><li>Same principle that gives airplanes lift </li></ul></ul><ul><li>Newton’s Third Law </li></ul><ul><ul><li>Frisbee forces air down, air pushes back up on Frisbee </li></ul></ul><ul><ul><li>Angle of Frisbee directs air down and keeps Frisbee up </li></ul></ul>
  4. 5. Angular Momentum <ul><li>Rotating body’s resistance to change in orientation and rate of rotation </li></ul><ul><li>In Frisbees, what keeps them stable </li></ul><ul><li>Faster it is thrown, more stable it is </li></ul>
  5. 6. Impact <ul><li>Kids are outside more </li></ul><ul><li>College campus’ are able to create perfect pictures of their school quad thanks to the Frisbee </li></ul>
  6. 7. References <ul><li>&quot;Frisbee.&quot; St. James Encyclopedia of Popular Culture . 5 vols. St. James Press, 2000. Reproduced in History Resource Center. Farmington Hills, MI: Gale. http://galenet.galegroup.com/servlet/HistRC/ </li></ul><ul><li>Vargas, Colby. &quot;Frisbee.&quot; St. James Encyclopedia of Popular Culture . Ed. Sara Pendergast and Tom Pendergast. Vol. 2. Detroit: St. James Press, 2000. 174. Gale Virtual Reference Library . Web. 17 Feb. 2010. </li></ul><ul><li>Kever, J. (n.d.). Frisbee flies into the 21st century. Chron.com - Houston Chronicle . Retrieved February 18, 2010, from http://www.chron.com/disp/story.mpl/life/4840419.html </li></ul><ul><li>Physics of a Frisbee. (n.d.). The Wellington School . Retrieved February 18, 2010, from http://www.wellington.org/miller/How%20the%20Frisbee%20Flies.htm </li></ul><ul><li>Portland Ultimate Frisbee, it’s all about the spirit.. (n.d.). Relocation to Portland . Retrieved February 18, 2010, from http://relocationtoportland.com/2008/12/17/portland-ultimate-frisbee/ </li></ul><ul><li>Quad Frisbee on Flickr - Photo Sharing!. (n.d.). Welcome to Flickr - Photo Sharing . Retrieved February 18, 2010, from http://www.flickr.com/photos/tatiad/288102680/ </li></ul>

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