# Euclid

6 09, 2017

## Logic and the scientific method

By |2019-11-13T20:59:51-08:00September 6th, 2017|Science|Comments Off on Logic and the scientific method

An eclipse of the moon. You can see the curved shadow of the Earth. Logic tells you the earth is round. Making predictions Once people have seen that something happens [...]

4 08, 2017

## Medieval math in Europe

By |2017-08-04T13:22:07-07:00August 4th, 2017|Math, Medieval|Comments Off on Medieval math in Europe

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 [...]

29 07, 2017

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 [...]

28 07, 2017

## Proof for the area of a circle

By |2019-04-06T08:43:58-07:00July 28th, 2017|Math|Comments Off on Proof for the area of a circle

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 [...]

27 07, 2017

## Medieval Islamic science

By |2019-10-07T07:26:55-07:00July 27th, 2017|Islam|Comments Off on Medieval Islamic science

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 [...]

27 07, 2017

## Ibn al-Haytham – Medieval Islamic science

By |2019-09-15T21:13:57-07:00July 27th, 2017|Islam, Science|Comments Off on Ibn al-Haytham – Medieval Islamic science

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 [...]

21 07, 2017

## Jainism – religion in medieval India

By |2019-10-10T08:00:34-07:00July 21st, 2017|India, Religion|Comments Off on Jainism – religion in medieval India

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 [...]

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 [...]

18 07, 2017

## Who was Euclid? History of Geometry

By |2019-05-31T20:43:18-07:00July 18th, 2017|Africa, Egypt, Science|Comments Off on Who was Euclid? History of Geometry

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 [...]

18 07, 2017

## Who was Archimedes? Eureka!

By |2019-02-01T06:23:28-08:00July 18th, 2017|History|Comments Off on Who was Archimedes? Eureka!

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 [...]

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