Our 10th project contribution




on 21st June 2004

(Begin of summer)




1.   Introduction


2.   Projects


2.1 Determination of the circumference/radius of the earth

by method of Eratosthenes

(in co-operation with other participants)


2.2         Determination of the latitude of observer's location


       the results of the Eratosthenes project

       the culmination high of the sun

       shadow measurement and the angle of ecliptic

       the length of the day

       the distance between west-point and point of sunset


2.3         Determination of the angle of ecliptic (1st part of


3. Invitation to take part