Eratosthenes realised that if he could measure the angle of a shadow cast by a stick at noon on the same day somewhere much further north (or south), and he knew the distance to that place, he could calculate the curvature of the Earth. He picked Alexandria, about 790 km from Syene (measured by camel travel!), and he showed the angle at Alexandria was about 7.2 degrees, or about 1/50 of a complete circle. This meant the circumference of Earth was about 50 x 790 km = 39500 km. To find out more about Eratosthenes Measuring the Earth, read this article. We now know the Earth’s circumference is just over 40000 km, so Eratosthenes was amazingly close. These days, we also know that the Earth isn’t really a sphere – it’s a slightly flattened ellipsoid (egg shape), mainly due to the fact that it is spinning. A Link to the Past (Barcode Battler II).The Legend of Zelda: An Original Version.The Knight who Sacrificed Himself for the Princess. In the original The Legend of Zelda, Hyrule is engulfed in chaos after an army led by Ganon invaded it and stole the Triforce of Power. In an attempt to prevent Ganon from acquiring the Triforce of Wisdom, Princess Zelda splits it and hides the eight fragments in secret dungeons throughout the land. While wandering the land, the old woman is surrounded by Ganon’s henchmen, though a young swordsman named Link appears and rescues her.īefore the princess is kidnapped by Ganon, she commands her nursemaid, Impa, to find someone courageous enough to save the kingdom. After hearing Impa’s plea, he resolves to save Zelda and sets out to reassemble the scattered fragments of the Triforce of Wisdom, to become powerful enough to defeat Ganon. Link located the eight underground labyrinths, defeats several guardian monsters, and retrieves the Triforce fragments. With the completed Triforce of Wisdom, Link is able to infiltrate Ganon’s hideout and defeats him with the Silver Arrow.
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