camera obscura

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6 09, 2017

Human organs: medieval science

By |2019-09-15T21:13:36-07:00September 6th, 2017|Biology, Science|0 Comments

Chinese drawing of the human organs (about 1200) Eyes and fevers Between the Middle Ages and modern times, doctors have learned a lot of new things about how human bodies work. Earlier history of the human body History of medicine History of science All our biology articles The Islamic doctor al-Tabari, in the early 800s, [...]

4 08, 2017

Medieval astronomy in Europe

By |2018-04-24T08:21:21-07:00August 4th, 2017|Medieval, Science|0 Comments

Astrolabe in Hebrew, probably from Spain (1300s AD) In the early Middle Ages, most people in Europe were too poor to have much time for astronomy. But some people were still interested in the stars. Astrologers tried to predict the future. Monks wanted to figure out the right day to celebrate Easter, or the right times for prayers. And a few [...]

18 07, 2017

Who was Euclid? History of Geometry

By |2019-05-31T20:43:18-07:00July 18th, 2017|Africa, Egypt, Science|0 Comments

An Egyptian papyrus from about 100 AD which is a piece of one of Euclid's books Euclid's life and background Nobody knows much about Euclid's life anymore - it is all forgotten. We only know that he worked at the University of Alexandria, in Egypt, for a while. University of Alexandria Greek mathematics Egyptian math [...]

12 07, 2017

Who was Aristotle? – Greek philosophy

By |2019-09-14T06:38:55-07:00July 12th, 2017|Greeks|8 Comments

Who was Aristotle? An ancient Egyptian papyrus with a scrap of Aristotle's "Politics" Aristotle's family Aristotle's father was Nicomachus, a doctor who lived near Macedon, in the north of Greece. Ancient Greek doctors More Greek philosophy All our Ancient Greece articles His mother Phaestis was from Euboea. She probably worked from home. So, [...]

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 [...]