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Hilton Longboat Key Florida Endless Summer Promotion '07
and receive a $50 gas credit to take the sting out traveling this summer, and with every morning of your stay, wake up to a full breakfast for two in Latitudes Beach Café. Plus recieve a 25% off your next stay at over 15 other Florida Resorts. If the beach is not enough, then there is always fantastic golfing or shopping at world famous St Armand's circle. When booking online enter END under 'group code' Hope to see you this summer at the Longboat Key Hilton's 'Endless Summer '07' www ...
Eratosthenes of Cyrene the Astronomer
Eratosthenes of Cyrene (Greek Ἐρατοσθένης; c. 276 BC[1] c. 195 BC) was a Greek mathematician, elegiac poet, athlete, geographer, and astronomer. He made several discoveries and inventions including a system of latitude and longitude. He was the first Greek to calculate the circumference of the earth (with remarkable accuracy), and the tilt of the earth's axis (also with remarkable accuracy); he may also have accurately calculated the distance from the earth to the sun and invented the leap day ...
La Eclíptica y las estaciones - The ecliptic and the seasons
y mínimos del paso del sol configuran dos planos paralelos muy importantes: el Trópico de Cancer y el Trópico de Capricornio. Ambos representan las latitudes máximas que alcanza el Sol a lo largo del año. El Trópico de Cancer se halla a 23º 27' Latitud Norte y el Trópico de Capricornio a 23º27' latitud Sur. Cuando el sol alcanza esas latitudes, se dice que está en los Solsticios. Tenemos situados astronómicamente, por tanto, los dos Solsticios (Cancer y Capricornio) y los dos ...