Eratosthenes

Nis, Serbia

December 2011

Nis Serbia Bubanjski heroji school 43°19’N 21°50’E
Date Gnomon Shadow Angle
December 9th 100 cm 220.3 cm 65°35’ = 65.585°

Nis-Meerut

Meerut India
School Nas College
Longitude 77°42′ E
Latitude 29°00’ N = 29,00°
Angle 51°20’ = 51.34°
Nis Serbia
School Bubanjski heroji school
Longitude 21°50’E
Latitude 43°19’N = +43,32°
Angle 65°35’ = 65.585°
  • Difference between latitudes : 43.32 - 29.00 = 14.32°
  • Distance between two cities : 14.32 X 111,11 km = 1591 km
  • Difference between angles of the sun: 65.6 - 51.3 = 14.3°
  • Circumference 1591 X 360 / 14.3 = 40 053 km

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Nis-MontePatria

Monte Patria Chile
School Colegio Republica de Chile
Longitude 70°57’W
Latitude 30°41’S = -30,6833°
Angle 9°27’ = -9.462°S
Nis Serbia
School Bubanjski heroji school
Longitude 21°50’E
Latitude 43°19’N = +43,32°
Angle 65°35’ = 65.585°
  • Différence de latitude : 43,32 -(-30.68) = 74.00°
  • Distance entre les deux villes : 74.00 X 111,11 km = 8221 km
  • Différence entre les angles du soleil: 65.59 - (-9.46) = 75.05°
  • Circonférence 8221 X 360 / 75.05 = 39 435 km

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