The underlying question is why Euclid did not use this proof, but invented another.

Oenopides of Chios Born: Made important contributions to astronomy. May have been the first to fix a value for the obliqity of the ecliptic.

Plato also describes a scene where Socrates comes across two young men discussing a question in mathematical astronomy which had been tackled by Oenopides and Anaxagoras: Accepted in Greece until refined by Eratosthenes. The period of the Great Year combined cycle of sun and moon, but later the combined period of sun moon and planets: Many historians doubt whether Oenopides could have collected sufficient quality data for this would requires 59 years.

It is only 2 from its starting position at the end of 59 years. Developed a theory to account for the Nile floods.

Heat stored in the ground during the winter dries up the underground water so that the river shrinks.

Pythagoras was born in about BC on the Greek island of Samos. His father was a merchant. Pythagoras was taught mathematics by Thales, who brought mathematics to the Greeks from Ancient Egypt, and by Anaximander, who was an earlier student of Thales. Euclid (/ ˈ juː k l ɪ d /; Ancient Greek: was a Greek mathematician, often referred to as the "founder of geometry" or the "father of geometry". He was active in Alexandria during the reign of . List of Ancient Mathematicians MacTutor link. I have skipped Chinese, Indian, and Arabic mathematicians since they are covered on another file. Pythagoras (Πυθαγόρας) Biography in Dictionary of Scientific Biography Encyclopaedia Britannica (also: Oenopides of Chios Summary: Ancient Greek mathematician (geometer) and astronomer.

In the summer the heat disappears, as testing the temperature of deep wells suggests, and water flows up into the river so causing floods. This theory is false. It did not prove popular as other rivers in Libya were subject to similar conditions but did not behave in the same way.

Said to have believed in fire and air as basic elements. Thought of the world as a living being with God as its soul. Oenopides of Chios Summary: Ancient Greek mathematician geometer and astronomer.

Pythagoras was born in about BC on the Greek island of Samos. His father was a merchant. Pythagoras was taught mathematics by Thales, who brought mathematics to the Greeks from Ancient Egypt, and by Anaximander, who was an earlier student of Thales. Watch video · After Socrates's death, Plato traveled for 12 years throughout the Mediterranean region, studying mathematics with the Pythagoreans in Italy, and geometry, geology, astronomy and religion in . Pythagoras was an ancient Greek are regardbouddhiste.comian regardbouddhiste.comatican regardbouddhiste.comian regardbouddhiste.com -

Lived around BCE. Aso determined the value of the Great Year, that is, the shortest interval of time that is equal to both an integer number of years and an integer number of months. But the lunar orbit varies. He put the Great Year at 59 years months. Shortly after, in BC, Meton and Euctemon discovered the better value of 18 years, equal to months the so-called Saros period.

Perhaps developed the rule that geometrical constructions should use only a compass and straightedge. Also two elementary constructions: Said to have given an explanation of the flooding of the Nile each summer.

On the basis of observations of the temperature of water in deep wells he seems erroneously to have inferred that underground water is in fact cooler in summer than in winter. In winter, when rain fell and seeped into the ground it would soon evaporate again because of the heat in the soil.

However, in summer, when water in the ground was supposedly colder, there would be less evaporation. The surplus of moisture would then have to be carried off otherwise, thereby causing the Nile to overflow. Attributed the opinion that formerly the sun had moved along the milky way. When it saw how Thyestes, a mythological figure, was served his own son for dinner by his brother Atreus, the sun was so horrified that it left its course and moved to the zodiac instead.

Said to have regarded the universe as a living organism, God or the Divine being its soul.Pythagoras of Samos an outline biography The famous Greek philosopher mathematician Pythagoras was born circa B.C. on Samos an island lying off the western coast of Asia Minor.

Samos was at this time one of the colonies that had been developed by the city states of ancient Greece centred upon Asia Minor and the islands lying off its coasts. Pythagoras: Pythagoras, Greek philosopher, mathematician, and founder of the Pythagorean brotherhood.

Greek philosopher, mathematician, and founder of the Pythagorean brotherhood that, although religious in nature, Biography of Pythagoras; MacTutor History of Mathematics Archive - Biography of Pythagoras of Samos.

Pythagoras was an ancient Greek are regardbouddhiste.comian regardbouddhiste.comatican regardbouddhiste.comian regardbouddhiste.com - List of Ancient Mathematicians MacTutor link.

I have skipped Chinese, Indian, and Arabic mathematicians since they are covered on another file. Pythagoras (Πυθαγόρας) Biography in Dictionary of Scientific Biography Encyclopaedia Britannica (also: Oenopides of Chios Summary: Ancient Greek mathematician (geometer) and astronomer.

Watch video · After Socrates's death, Plato traveled for 12 years throughout the Mediterranean region, studying mathematics with the Pythagoreans in Italy, and geometry, geology, astronomy and religion in .

In mathematics, the Pythagorean theorem, also known as Pythagoras' theorem, is a fundamental relation in Euclidean geometry among the three sides of a right triangle.

It states that the square of the hypotenuse (the side opposite the right angle) is equal to the sum of the squares of the other two sides.

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