: 1,000 years before the Greeks, ancient Babylonians had developed a unique form of trigonometry #IndiaNEWS Our modern understanding of trigonometry harks back to ancient Greek astronomers studying the

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1,000 years before the Greeks, ancient Babylonians had developed a unique form of trigonometry #IndiaNEWS
Our modern understanding of trigonometry harks back to ancient Greek astronomers studying the movement of celestial bodies through the night sky.But in 2017, I showed the ancient Babylonians likely developed their own kind of “proto-trigonometry� more than 1,000 years before the Greeks. So why were the Babylonians interested in right-angled triangles? What did they use them for?I have spent the past few years trying to find out. My research, published recently in Foundations of Science, shows the answer was hiding in plain sight.Cadastral surveyMany thousands of clay tablets have been retrieved from the lost cities of ancient Babylon, in present-day Iraq. These documents were preserved beneath the desert through millennia. Once uncovered they found their way into museums, libraries and private collections.One example is the approximately 3,700-year-old cadastral survey Si.427, which depicts a surveyor’s plan of a field. It was excavated by Father Jean-Vincent Scheil during an 1894 French archaeological expedition at Sippar, southwest of Baghdad. But its significance was not understood at the time.It turns out that Si.427 – which has been in Turkey’s İstanbul Arkeoloji Müzeleri (Istanbul Archaeological Museums) for several decades and is currently on display – is in fact one of the oldest examples of applied geometry from the ancient world. Let us look at what makes...Read more

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