Jeopardy! Round, Double Jeopardy! Round, or Tiebreaker Round clues (10 results returned)
| #8, aired 2022-02-11 | ANGLES $1000: Using the difference in the angles of shadows at 2 distant places, Eratosthenes calculated this around 200 B.C. to be 250,000 stadia the circumference of the Earth |
| #7631, aired 2017-11-13 | EARTH SCIENCE $3,000 (Daily Double): Millennia ago Eratosthenes calculated this at 252,000 stadia, thought to equal about 25,000 miles the circumference of the Earth |
| #7108, aired 2015-07-08 | SHADOW PLAY $1200: By comparing shadows in wells during the summer solstice, Eratosthenes calculated this around 240 B.C. the circumference of the Earth |
| #5950, aired 2010-06-25 | IT HAPPENED IN JUNE $1,000 (Daily Double): According to calculations by Eratosthenes, it was June 11, 1184 B.C. that this mythic city was sacked & burned Troy |
| #5571, aired 2008-11-24 | ASTRONOMERS $1200: (Jon of the Clue Crew points to an astronomical diagram on the monitor.) In the 200s B.C. Eratosthenes calculated Earth's girth using the difference in the angle of the Sun's rays between Aswan & this Egyptian city Alexandria |
| #5207, aired 2007-04-10 | THE 3rd CENTURY B.C. $800: Greek mathematician Eratosthenes famously calculates the circumference of this the Earth |
| #4880, aired 2005-11-25 | DOWN TO EARTH $800: Eratosthenes calculated this c. 230 B.C. using the difference between the sun's angles at 2 places during June the Earth's circumference |
| #3193, aired 1998-06-17 | THE LIBRARY OF ALEXANDRIA $800: Third librarian Eratosthenes is famous for determining this measurement of the Earth circumference |
| #2836, aired 1996-12-23 | ANCIENT HISTORY $600: In the 200s Eratosthenes calculated the circumference of this within about 15% of accurate The Earth |
| #2654, aired 1996-02-29 | HEADS $400: Around 240 B.C. Eratosthenes of Cyrene was summoned by Ptolemy III to head the library in this city Alexandria |
Final Jeopardy! Round clues (0 results returned)
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