Eratosthenes 2010-2011

Marina di Carrara Italia

Friday 19 June 2009
Marina di Carrara Italia
Scuola Primaria Paradiso
Longitude 10°02’ E
Latitude 44°02’ N
Angle + 20°35’ = +20,58°

Calculations with Caseros

  • difference of latitude 44°02’ - (-34°36’) = 78°38’ = 78.633°
  • distance between the parallels : 78.6333° x 111.111 km = 8737 km
  • difference of the angle of the Sun : 20,58° - (-58,0°) = 78,58°
  • circumference of the Earth : 8737 x 360° / 78,58 = 40 027 km


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