In the 200s Eratosthenes calculated the circumference of this within about 15% of accurate
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How did Eratosthenes measure the circumference of the earth ...  Jul 3, 2012 ... The Greek mathematician Eratosthenes realized that on the day of the ... This is 15%. ... 2000 years ago was located at 41 kms distance-To calculate the ... astrolabe was not very accurate really (worse primitive astrolabes),...
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Eratosthenes' measurement of the Earth's circumference - The Flat ...  Jan 21, 2013 ... He calculated the circumference of the Earth without leaving Egypt. ... which is off the actual circumference by 16.3%; too large an error to be considered as 'accurate'. ... I'm guessing the 2000 years have muddied the water and fudged the numbers a little. ..... Reply #15 on: January 25, 2013, 07:11:21 AM .
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The Man Who Accurately Estimated the Circumference of the Earth ...  Jan 1, 2014 ... Today I found out about a man who fairly accurately estimated the circumference of the Earth well over 2,000 years ago: Eratosthenes of...
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Eratosthenes - Wikipedia  Eratosthenes of Cyrene was a Greek mathematician, geographer, poet, astronomer, and music ... Additionally, he may have accurately calculated the distance from the Earth to the Sun and invented the leap day. He created the .... Eratosthenes calculated the circumference of the Earth without leaving Egypt. He knew that at...
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Eratosthenes' Calculation of Earth's Circumference  Jul 20, 2007 ... Eratosthenes' Calculation of Earth's Circumference ... was able to make a remarkably accurate calculation of the circumference of Earth. ... He may have been correct to within less than 1%, a remarkable accomplishment!
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Origins of Measurements - Fact Monster  In ancient times, the body ruled when it came to measuring. ... the 12th century, King Henry I of England fixed the yard as the distance from his nose to the thumb...
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J! Archive - Show #3226, aired 1998-09-21  (we'll give you some information & you have to identify the king in question) .... Pi times a circle's radius squared will give you this measurement, abbreviated A...
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Twenty Thousand Leagues Under the Sea.pdf - Delta Academy of ...  Twenty Thousand Leagues Under the Sea. Introduction. ..... KILOMETER Roughly 6/10 of a mile. - MYRIAMETER Roughly 6.2 miles. TON, METRIC Roughly 2,200 pounds viii ... inexplicable phenomenon that surely no one has forgotten.
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Eratosthenes' Calculation of Earth's Circumference  Jul 20, 2007 ... Next, Eratosthenes used a bit more geometry to reason that the shadow's angle would ... Eratosthenes had the distance between the two cities measured. ... Around 240 B.C. he made the first good measurement of the size of the Earth. ... We aren't quite sure what answer Eratosthenes came up with, though.
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Full text of "Measure for measure. Edited by H.C. Hart"  204) which is on the same footing as one relating to Othello (see my Introduction to ... Measure for Measure can never have been popular upon the stage. ..... Varrius.2 Elbow, a simple Constable. ...... of mine, i o   Who, falling in the flaws of her own youth, Hath blister'd her report. ...... Go to your 170 knees and make ready.
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Determining the earth's size  In the third century BCE , Eratosthenes, a Greek librarian in Alexandria , Egypt ... Eratosthenes determined the earth's size by observing known phenomena and ... Many scholars believe Eratosthenes measured the distance by measuring a...
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Eratosthenes  ... be said that Eratosthenes is most widely known as a famous Greek mathematician. ... To calculate the circumference of the Earth, Eratosthenes measured the...
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HISTORY OF MEASUREMENT - ppt download - SlidePlayer  Legend has it that this Greek unit was based on an actual measurement of ... yard of cloth by the distance between the end of the outstretched arm and their chin. ... Henry I of England fixed the yard as the distance from his nose to the thumb of...
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Circumference of a Circle - Math Goodies  Thus, for any circle, if you divide the circumference by the diameter, you get a value close to Pi . ... Thus, the diameter of a circle is twice as long as the radius.
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Archimedes' Approximation of Pi  Jun 10, 1997 ... ... to mathematics was his method for approximating the value of pi. ... The key result used by Archimedes is Proposition 3 of Book VI of Euclid's Elements. ... of any circle to its diameter is less than 31/7 but greater than 310/71.
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Pythagoras - Wikipedia  Pythagoras of Samos (US /prs/; UK /pars/; Greek:    .... But he did not say that all things come to be from number; rather, ... Brewer (1894) mentioned that "Pythagoras taught that the sun is a movable .... theorem, a theorem in geometry that states that in a right-angled triangle the area...
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TLW's Sixteenth (16th) Century (1500-1599 C.E.) Historyscope  Deaths: Italian Venetian doge (1486-1501) Agostino Barbarigo (b. ...... Titian (1488-1576), The Assumption of the Virgin (Assunta) (1516-18) (San Nicolo dei ... 9 ft. tall; famous for her vivid red robe; the work that gives Titian an internat. rep. ...... Five=The Five Wise Virgins (out of 10), Six=#Days God Created the Earth In,...
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Pi - Math is Fun  Or you could draw a circle with a diameter of 1. ... The ratio of the Circumference ... The digits go on and on with no pattern.  has been calculated to over two quadrillion decimal places and still ... A quick and easy approximation for  is 22/7.
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Eratosthenes - Wikipedia  Eratosthenes of Cyrene was a Greek mathematician, geographer, poet, astronomer, and music .... Eratosthenes calculated the circumference of the Earth without leaving Egypt. He knew that at local noon on the ... Eratosthenes described his famous story of the well in Syene, described above. This book would now be...
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Circumference of a Circle - Math Goodies  Circumference of a circle is presented in this interactive lesson from Math Goodies. ... We use the Greek letter Pi ... If you measure the circumference and the diameter of the plate and then divide ... Circumference and Area Lessons. Geometry...
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Pi - Wikipedia  The number  is a mathematical constant, the ratio of a circle's circumference to its diameter, commonly approximated as 3.14159. It has been represented by the Greek letter "" since the mid-18th century, ....  is an irrational number, meaning that it cannot be written as the ratio of two integers (fractions such as 22/7 are...