Optics

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11 09, 2017

Ottoman science – astronomy and clocks

By |2019-09-05T06:01:24-07:00September 11th, 2017|West Asia|0 Comments

Taqi al-Din in his observatory Ottoman scholars built many libraries in Istanbul and in other cities of the Ottoman Empire. They translated many earlier books into Turkish or Arabic, like the works of the Roman astronomer Ptolemy. Ottoman scholars also continued to make their own new investigations. The mathematician Ali Qushji, for instance, came [...]

27 07, 2017

Ibn al-Haytham – Medieval Islamic science

By |2019-09-15T21:13:57-07:00July 27th, 2017|Islam, Science|0 Comments

Diagram of an eye, by Ibn al-Haytham (ca. 1000 AD) Who was ibn al-Haytham? Ibn al-Haytham was born about 965 AD in Basra, near the Persian Gulf (modern Iraq), and when he grew up he went to Cairo, in Egypt, to get an education. Cairo was at that time a rich university center under Fatimid rule. He [...]

27 07, 2017

Medieval Islamic astronomy

By |2018-04-23T10:04:24-07:00July 27th, 2017|History, Islam, Science|0 Comments

Islamic astronomers taking observations West Asian astronomers had been world leaders in astronomy for thousands of years before the Islamic conquests in the 600s AD. In the last centuries BC, West Asian astronomers had already figured out that the earth was a ball, and that the earth went around the sun, and how big the earth was, and that the moon went [...]

7 06, 2017

What is a camera obscura? – Chinese Science

By |2019-02-27T05:46:21-07:00June 7th, 2017|China, Science|0 Comments

What is a camera obscura? This is a large camera obscura: a dark room with an image projected into it. Who invented the camera obscura? The Chinese philosopher and scientist Mozi may have been the first person to write about a camera obscura, about 400 BC - anyway, Mozi's camera is the first [...]