Article: Pyramids and circles: the ancients can teach today's engineer about measurement.(Other Dimensions)

The Egyptian pyramids have long been spoken of as examples of human ingenuity and skill. This ancient era brought into being one of the first length standards, the cubit. Flatness of the massive stones used to build the great pyramid was said to be within 0.05 inch or better. And to this day, no one has successfully demonstrated how these huge building blocks were handled. Builders then knew about measurement and construction techniques we may never understand.

However, the Egyptians were not alone in their engineering and measurement skills. The ancient peoples who built stone circles and related constructions need to be recognized for their impressive feats. ...

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