Eratosthenes

Nis, Serbia

March 2011

Nis Serbia Bubanjski heroji school 43°19’N 21°50’E
+/x Date Gnomon Shadow Angle
x march 13th 100 cm 104.5 cm 46°15’ = 46.261°
x march 16th 100 cm 98.5 cm 44°34’ = 44.566°
x march 23rd 100 cm 89.5 cm 41°49’ = 41.829°
x march 24th 100 cm 88.5 cm 41°30’ = 41.509°
. . . . .
+ march 20th 100 cm 93.5 cm 43°4’ = 43.076°
+ march 21st 100 cm 92.2 cm 42°40’ = 42.676°

x : measure
+ : estimation


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