WELCOME TO AMAZING WORLD OF

PI

Beginning of Pi Pi is a very old number. We

know that the Egyptians and the Babylonians knew about the existence of the constant ratio pi, although they didn't know its value

nearly as well as we do today. They had figured out that it was a little

bigger than 3; the Babylonians had an

approximation of 3 1/8 (3.125), and the Egyptians

had a somewhat worse approximation of 4*(8/9)^2 (about 3.160484), which is slightly less accurate and

much harder to work with.

Rhind Papyrus

What is "pi"?

• Mathematician: Pi is the ratio of the circumference of a circle to its diameter.

• Engineer: Pi is about 22/7.

• Physicist: Pi is 3.14159 plus or minus 0.000005

• Computer Programmer: Pi is 3.141592653589 in double precision.

• Nutritionist: You one track math-minded fellows, Pie is a healthy and delicious dessert!

THE NOTATION OF PI

The first to use the symbol π with its current meaning was William Jones in 1706. He was a Welsh mathematician.Euler adopted the symbol in 1737 and it soon became a standard.

WILLIAM JONES

LEONHARD EULER

Archimedes :-• IT APPEARS TO HAVE BEEN ARCHIMEDES WHO

WAS THE FIRST TO OBTAIN A THEORETICAL CALCULATION OF PI.– HE CONCLUDED THE FOLLOWING:

223/71<PI<22/7

• ARCHIMEDES USED INEQUALITIES VERY SOPHISTICATEDLY HERE TO SHOW THAT HE KNEW PI DID NOT EQUAL 22/7. HE NEVER CLAIMED TO HAVE FOUND THE EXACT VALUE.

• IT HAS BECOME ONE OF THE MOST PROMINENT MISSIONS OF THE SCIENTIFIC COMMUNITY TO CALCULATE PI MORE AND MORE PRECISELY

Archimedes

The Bible contains a verse that tells us a value of pi that was used.

“And he made a molten sea, ten cubits from the one brim to the other: it was round all about, and its height was five cubits: and a line of thirty cubits did compass it about”- (I Kings 7, 23)

3.14 and Beyond…

3. 141592653589793238462643383279502884197169399375105820974944 592307816406286208998628034825342117067982148086513282306647 093844609550582231725359408128481117450284102701938521105559 644622948954930381964428810975665933446128475648233786783165 271201909145648566923460348610454326648213393607260249141273 724587006606315588174881520920962829254091715364367892590360 011330530548820466521384146951941511609433057270365759591953 092186117381932611793105118548074462379962749567351885752724 891227938183011949129833673362440656643086021394946395224737 190702179860943702770539217176293176752384674818467669405132 000568127145263560827785771342757789609173637178721468440901 224953430146549585371050792279689258923542019956112129021960 864034418159813629774771309960518707211349999998372978049951 059731732816096318595024459455346908302642522308253344685035 261931188171010003137838752886587533208381420617177669147303 598253490428755468731159562863882353787593751957781857780532 171226806613001927876611195909216420198938095257201065485863 278865936153381827968230301952035301852968995773622599413891 249721775283479131515574857242454150695950829533116861727855 889075098381754637464939319255060400927701671139009848824012 858361603563707660104710181942955596198946767837449448255379 774726847104047534646208046684259069491293313677028989152104 752162056966024058038150193511253382430035587640247496473263 914199272604269922796782354781636009341721641219924586315030 286182974555706749838505494588586926995690927210797509302955 321165344987202755960236480665499119881834797753566369807426 542527862551818417574672890977772793800081647060016145249192 173217214772350141441973568548161361157352552133475741849468 438523323907394143334547762416862518983569485562099219222184 272550254256887671790494601653466804988627232791786085784383

The numbers to the right of the 3 never repeat in a

pattern.

“PI” DAY IS CELEBRATED ON:-TWO DAY ONE IS MARCH 14 .Pi Day begins at precisely 1:59 p.m. on March 14. It reads 3/14/1:59 which corresponds to 3.14159…

ALBERT EINSTEIN WAS BORN ON PI DAY IN 1879

Larry Shaw, the organizer of the first Pi Day celebration at the Exploratorium in San Francisco

Observed by Worldwide

Significance 3, 1, and 4 are the three most significant figures of π

Celebrations Pie eating, discussions about π [1]

Celebrations Pie eating, discussions about π [1]

“PI” DAY IS ALSO CLEBRATED ON :-

22ND OF JULYthis day is celebrated on 22nd July. Pi used to be calculated in Ancient Greece as a fraction loosely calculated as 22/7.

THE WORLDS LARGEST PIE WAS MADE IN TRAVERSE CITY, MICHIGAN. IT WAS 17 FEET, 6 INCHES IN DIAMETER AND WEIGHED 28,350 POUNDS. IT WAS A CHERRY PIE

The record for memorizing Pi was achieved by Chao Lu (China) who recited Pi from memory to 67,890 places, at the Northwest A&F University, Shaanxi province, China, on 20 November 2005.Chao Lu, a chemistry student, attempted the record after practising for 4 years. The attempt lasted 24 hrs 4 min and was recorded on 26 video tapes. News reports from CCTV (China Central Television) and from Yangling TV submitted with the claim. The attempt was witnessed by 8 officials, Maths professors of the NWAFU and 20 students to assist the witnesses.

GUINNESS WORLD RECORD :-

GUINNESS WORLD RECORD :-MONROE, CT, USA -- IN CELEBRATION OF PI DAY, MASUK HIGH SCHOOL STUDENTS, WITH HELP FROM LOCAL PRESCHOOLERS, ASSEMBLED A PI PAPER CHAIN MADE OF 75,000 LINKS, USING A DIFFERENT COLOR FOR EACH OF THE TEN DIGITS OF PI - SETTING THE NEW WORLD RECORD FOR THE LONGEST PI CHAIN.

WEDNESDAY, SEPTEMBER 1, 2010 MOST DIGITS OF PI CALCULATED - SHIGERU KONDO AND ALEXANDER YEE SETS WORLD RECORD TOKYO, JAPAN -- SHIGERU KONDO, A JAPANESE SYSTEMS ENGINEER AND ALEXANDER J. YEE, AN AMERICAN COMPUTER SCIENCE STUDENT, HAVE CALCULATED THE VALUE OF PI TO FIVE TRILLION DIGITS - SETTING THE NEW WORLD RECORD FOR THE MOST DIGITS OF PI CALCULATED.

Pi FACTS• WHEN YOU ROUND OFF PI TO THE NEAREST HUNDREDTH, YOU GET 3.14 PI HAS

BEEN CALCULATED TO OVER ONE TRILLION DIGITS BEYOND ITS DECIMAL POINT. • NO PERFECT CIRCLES OR SPHERES EXIST IN NATURE, SINCE MATTER IS COMPOSED

OF ATOMS AND THEREFORE LUMPY, NOT SMOOTH. SO, THE APPROXIMATION OF PI MAY NOT BE AS CLOSE TO 3.14…

• “PROBABLY NO SYMBOL IN MATHEMATICS HAS EVOKED AS MUCH MYSTERY, ROMANTICISM, MISCONCEPTION AND HUMAN INTEREST AS THE NUMBER PI.”

WILLIAM L. SCHAAF, NATURE AND HISTORY OF PI

MADE BY RIDDHI,ISHA,PREKSHA

VIIC D.I.O