Eratosthenes

Xewkija (MALTA)

May 2007

Flag City Country School Latitude (°) +N/-S Longitude (°) +E/-W
Xewkija Malta Rosa Magro primary school 36.033 14.317
Date Gnomon Shadow Angle
May 11 100 cm 32 cm 17°44’ = 17.745°

Explanation of the sun’s movement and the change in the shadow’s direction. This is done also by keeping track of time.

11/05/2007


angle in Arras : 32°37’= 32° + 37 x 100/60 = 32,617°

angle in Xewkija : 17°45’= 17° + 45 x 100/60 = 17,750°

difference between the angles : 32,617° - 17,750° = 14,867°

distance between the parallels : 1583km

circumference :1583 x 360 / 14,867 = 38332km


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