Download
pi facts and history of pi n.
Skip this Video
Loading SlideShow in 5 Seconds..
Pi Facts and History of Pi PowerPoint Presentation
Download Presentation
Pi Facts and History of Pi

Pi Facts and History of Pi

609 Views Download Presentation
Download Presentation

Pi Facts and History of Pi

- - - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript

  1. Luis Gonzalez Pi Facts and History of Pi

  2. Timeline of Pi • 240 B.C. – Archimedes found pi to be 22/7 • 150 A.D. to 1650 – Pi was computed to 35 decimal places • 1706 – Symbol for pi introduced • 1949 – The first modern computer computed pi to 2,037 decimal places in 70 hours • 1999 – A Japanese professor calculates the most decimal places ever computed using a super computer • 2000+ -- As computers grow faster and more powerful, pi should also get much larger and massive.

  3. Importance of Pi • The Pi number enters into all branches of mathematics: • Theoretical • Physics • Chemistry • Astronomy • The universe could not operate properly without the number pi

  4. Important Facts About Pi • Pi is perhaps the most mathematical constant • Pi day is celebrated on the same day of Albert Einstein’s birthday • The symbol π comes from a Greek letter for the ratio of a circle’s circumference to its diameter • The symbol π appears in many different formulas that have nothing to do with circles • The Egyptians and Babylonians were the one who discovered pi

  5. Different Formulas of Pi • Formulas for Circles • A = π•r^2 • C = 2 π•r • Formulas for Spheres • S = 4π•r^2 • V = 4/3 π•r^3

  6. Machin-like Formulas • Machin-like formulas are the best know method to calculate pi • The name comes from a professor John Machin who taught at Gresham college during the early 1700s • Zacharias Dase used the Machin-like formula to calculate 200 pi decimals in his head

  7. Pi In Circles • To find the area and radius of a circle you need certain parts combined with pi, such as: diameter, radius, and circumference • Euler’s formula is mainly used trigonometric functions and complex exponential function, which requires pi

  8. Pi in Physics • Albert Einstein used pi for his formula of general relativity • Pi is not a physical constant in physics • Pi appears in several equations describing fundamentals in the principles of the Universe • The formula for electric force also includes pi, which describes the force between two electric charges

  9. Pi in Geometry and Trigonometry • Pi is used to find the area and circumference of a circle • It is also used to find the area and volume on spheres • Pi is often defined using trigonometric functions

  10. Works Cited www.users.rcn.com/mwhithney.massed/pi_importance.html Lloyd Motz and Jefferson Hane Weaver. The story of Mathematics. New York: Avon Books, 1993, page 20 www.doe.virginia.gov/Div/Winchester/Jhhs/mathfacts/pifacts.html www.xtimeline.com/timeline/A-History-of-Pi www.k12.nf.cf/roncallips/projects/pi_day/history_timeline.html www.arcytech.org/java/pi/facts.html www.wikipedia.org/wiki/Pi