INTERNATIONAL YEAR of ASTRONOMY Eratosthenes

Spring equinox (Estonia - Vastseliina)

Monday 13 April 2009 by perbosc

Vastseliina Estonia
Boarding School
Longitude 27°16′ E
Latitude 57°45’ N
Angle + 56°57’ = +56,95°

http://noondayproject2009.wikispaces.com


- Date of measurement  03/24/09
- Height of the gnomon 203 cm
- Lenght of the shadow 312 cm

Our first partner - equator

- Latitude 00° 00’ 00’’
- Angle of the sun 0°
- Distance to equator 6416 km
- Circumference : 6416 km * 360° / (56.95° - 0°) = 40557,7 km

Our second partner - Colegiul National Gheorghe Lazar Sibiu, Romania

- Latitude 45°48’ N
- Height of the gnomon 95 cm
- Lenght of the shadow 98 cm
- Angle of the sun 45°53’ = 45.891°
- Distance to Colegiul National Gheorghe Lazar Sibiu, Romania 11.9447° x 111.111 km = 1327 km
- Circumference: 1327 km * 360° / (56.95° - 45.891°) = 43197,4 km

Our third partner - College Antonin Perbosc, France

- Latitude 44°08’ N
- Height of the gnomon 100 cm
- Lenght of the shadow 97 cm
- Angle of the sun 44°7’ = 44.128°
- Distance to College Antonin Perbosc, France 13.6114° x 111.111 km = 1512km
- Circumference : 1512km * 360° / (56,95° - 44.128°) = 42452 km


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