geographer

earth

Eratosthenes: African and First Man To Measure The Circumference of Earth

More than 2000 years ago, a time when not even a calculator existed, let alone other technical devices that facilitate the research process, Eratosthenes calculated the spherical size of the Earth. He calculated it with considerable accuracy, obviously without the use of modern equipment but only by comparing the position of the Sun’s rays in …

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Cosmas Indicopleustes,From A Simple Merchant To An Intellectual Voyager

It’s the first half of the sixth century, the beginning of the middle ages, the time when the silk trade was growing between the Byzantine Empire and China, the time when the Anno Domini system was created which the Gregorian calendar is based upon, the time when the first reference in history to the use …

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