Euclid

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6 09, 2017

Logic and the scientific method

By |2018-05-31T11:49:22-07:00September 6th, 2017|Science|0 Comments

An eclipse of the moon. You can see the curved shadow of the Earth. Once people have seen that something happens through observation, sooner or later it will occur to them to ask why it happens. And is there any way to prove that it will happen the same way every time? Sumerians developed advanced math to [...]

4 08, 2017

Medieval math in Europe

By |2017-08-04T13:22:07-07:00August 4th, 2017|Math, Medieval|0 Comments

Math was a very exciting subject to be working on during the Middle Ages in Europe. Little by little, math experts in Europe were learning from Islamic math experts about what we call Arabic numbers (0,1,2,3,4,5,6,7,8,9) (though the numbers came originally from India). Leaning Tower of Pisa (built while Fibonacci was a child) The first of these experts was Adelard [...]

29 07, 2017

Geometry made easy!

By |2019-07-05T09:30:53-07:00July 29th, 2017|Math|0 Comments

Geometry: This is an equilateral trangle. What is geometry? The simplest geometric idea is the point, and then the line, the plane, and the solid. Shapes like circles, squares, rectangles, and triangles are flat, and we can think of them as being parts of a plane, flat like a drawing. What is a point? What is a plane? From planes to solids All [...]

28 07, 2017

Proof for the area of a circle

By |2019-04-06T08:43:58-07:00July 28th, 2017|Math|0 Comments

Proof for the area of a circle: Divide a circle up into sections like an orange Euclid's proof We know it's true that A=πr-squared is the area of a circle, but how can we prove that this formula is always true for every possible circle? Here's how Euclid did it. Who was Euclid? Area of a circle More [...]

27 07, 2017

Medieval Islamic science

By |2019-10-07T07:26:55-07:00July 27th, 2017|Islam|0 Comments

Medieval Islamic science: Al Tusi's diagram of linear motion from circular motion Indian and African science In the Early Middle Ages, before the formation of the Islamic Empire, Buddhists ran the world's biggest universities. One was in India, at Nalanda. Another was in what is now Pakistan, at Taxila. Medieval Islamic science built on this Indian scientific tradition. [...]

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 [...]

21 07, 2017

Jainism – religion in medieval India

By |2019-10-10T08:00:34-07:00July 21st, 2017|India, Religion|0 Comments

Jainism: A Jain statue, possibly Mahavira, from about 1200 AD When did Jains get started? Nobody knows when people first began to follow Jain ideas. Some Jain traditions take their history back to about 2000 BC, in the Harappan period. More about Buddhism Indian religions All our India articles The first definite evidence of Jain faith, [...]

18 07, 2017

Greek mathematics – Geometry and Proofs

By |2019-08-19T21:34:39-07:00July 18th, 2017|Greeks, Math|1 Comment

Greek mathematics: An Egyptian papyrus from about 100 AD which is a piece of one of Euclid's books Greek math: geometry not algebra Because people in ancient Greece had only very clumsy ways of writing down numbers, they didn't like algebra. Ancient Greek numbers What is algebra? All our ancient Greece articles They found it very hard [...]

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 [...]

18 07, 2017

Who was Archimedes? Eureka!

By |2019-02-01T06:23:28-07:00July 18th, 2017|History|0 Comments

Archimedes was from Syracuse, Sicily. Here you see it with Mount Etna in the background When did Archimedes live? Archimedes was born about 287 BC, so he was a little younger than Euclid. Archimedes' father was an astronomer, so he grew up knowing a lot about science and math. Who was Euclid? Greek astronomy History [...]