Boiledbeans

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January 12, 2008

2*Pi*r

devadutta @ 7:24 pm, GMT +0000 ( 1200165861 ) Play

Who is he (My apologies for posting it late)

519fca784cdd86d51664a8c64d701898.jpg

Hint:

320d1a02dedd29c7991b8a1a0b882693.gif

Cracked by: Arjun Chennu , madhur , nishansolo , yaksha , udupendra , piezocake , nishas thambi , bs , jayanth , Swetha , Shreyas , shashank and shenoyvarun86.

Answer:

Eratosthenes

Check out this cool video from Carl Sagan’s Cosmos which gives a very graphic explanation of what Eratosthenes did


13 Responses to “2*Pi*r”

  1. Arjun Chennu

    Eratosthenes… calculated circumference of earth by comparing solstice at alexandria and cyrene.

    Easy question, except for the bloody greek names.


  2. madhur
    1

    Eratosthenes of Cyrene (276 BC – 194 BC) was a Greek mathematician, poet, athlete, geographer and astronomer.

    His contemporaries nicknamed him “beta” because he supposedly proved himself to be the second in the ancient Mediterranean region in many fields. He is noted for devising a system of latitude and longitude.

    Eratosthenes is remembered for the calculation of the Earth’s circumference circa 240 BC, using trigonometry and knowledge of the angle of elevation of the Sun at noon in Alexandria and Syene (now Aswan, Egypt) as represented in the hint picture. The calculation is based on the assumption that the Earth is spherical and that the Sun is so far away that its rays can be taken as parallel.


  3. nishansolo

    Eratosthenes.


  4. yaksha
    1
    3

    Eratosthenes of Cyrene


  5. udupendra
    4
    4
    7

    Eratosthenes


  6. piezocake

    Eratosthenes.


  7. nishas thambi

    eratosthenes, and his calculation of the earth’s circumference


  8. bs

    Eratosthenes


  9. Eratosthenes.


  10. Swetha

    Eratosthenes


  11. Shreyas

    Eratosthenes…the first person to measure the circumference of the earth…
    ps. isnt he more well known for his sieve algorithm for prime numbers??


  12. shashank
    2

    Eratosthenes


  13. Eratosthenes


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