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Updated: May 29, 2025
But what had the Syene shadows to do with that? Syene must be under that ecliptic. On the edge of it. In short, just under the tropic. Now he had ascertained exactly the latitude of one place on the earth's surface. He had his known point from whence to start on a world-journey, and he would use it; he would calculate the circumference of the earth and he did it.
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