Famous people and their quotes. Part sixty one.

                                                                    Thales.

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“What man is happy? He who has a healthy body, a resourceful mind, and a docile nature.”

“Intellect is the swiftest of things, for it runs through everything.”

“The most difficult thing in life is to know yourself.”

Source of information:

https://quotes.thefamouspeople.com/thales-263.php

Great people: Archimedes.

 Archimedes of Syracuse (Ἀρχιμήδης;) was a Greek scientist. He was interested in mathematics (μᾰθημᾰτικά), geometry (γεωμετρία,), astronomy (ἀστρονομία), engineering, philosophy, and physics (φυσική). 

Archimedes was born on c. 287 B. C., in Sicily. Also, he lived there. Archimedes studied in Alexandria.

This scientist made many important things for science in ancient Greece. There is the Archimedes' principle "Any object, totally or partially immersed in a fluid or liquid, is buoyed up by a force equal to the weight of the fluid displaced by the object." There is a formula bout this principle.

Archimedes said "Eureka!" when he understood it.

"Give me a lever and a place to stand, and i'll move the world" (δῶς μοι πᾶ στῶ καὶ τὰν γᾶν κινάσω) his quote, too.

Archimedes created different scientific writings.

He died on c. 212 B. C., in Sicily.

Great people: Euclid.

 Euclid (Εὐκλείδης) was a mathematician in ancient Greece. Euclid of Alexandria was born in mid-4th century BC.

Also, he was known as the "father of geometry". Because Euclid made many things for this science.

He lived in Alexandria. Euclid created many different works about mathematics, algebra, and geometry. There is Euclidean geometry.

Now Euclid's works studied in schools and universities. 

Euclid, the Greek mathematician died in mid-3rd century BC.

Great people: Thales.

Thales of Miletus (Θαλῆς ὁ Μιλήσιος) was born in c. 626 B. C. He was known as a scientist in Ancient Greece.

Thales was interested in astronomy, mathematics, geometry, ethics, and philosophy.

He visited other countries.

Thales had his own ideas. Thales' theorem is one of them.

Thales of Miletus did many important things for different sciences.

He died in c. 548 B. C.

Great people: Pythagoras.

Pythagoras of Samos (Πυθαγόρας ὁ Σάμιος) was known as ancient Greek philosopher and scientist. He was born in c. 570 B. C., on Samos island.

Pythagoras studied mathematics. Also, he created Pythagorean theorem. The three sides of a right triangle, the sum of the squares of the lengths of the cathetus is equal to the square of the length of the hypothenuse. They were written in Pythagorean equation:

a² + b² = c²

Also, Pythagoras of Samos visited Egypt. He found wisdom in this place. Pythagoras took part in Olympic games.

He had many important philosophical ideas. Pythagoras influenced other scientists in Ancient Greece.

Pythagoras of Samos died in c. 495 B. C.

Great people: Isaac Newton.

Isaac Newton was born on January 4, 1643 (Old Style, December 25, 1642), at Woolsthorpe, England. His father died before Isaac was born. Isaac Newton's mother Hannah Ayscough noticed that her son was very clever boy since early childhood.

Isaac really was interested in physics, difficult science. Also, Newton studied Mathematics, Geometry, and Astronomy. In that time many many scientific laws were not know for people.

The scientist did a lot of important things for modern physics. Isaac Newton studied moving of subjects. He created Newton's laws of motion and Newton's law of universal gravitation. These laws and other discoveries are still important for us.

Isaac Newton was a popular man in his time. He never married. The scientist died in London on March 32, 1727.

Mathematics.

Mathematics is one of the most complex and difficult sciences. It can be easy if you understand this subject.

It appeared in ancient times. Scientists studied numbers numbers and solved the problems.

Many years later people invented calculator and made mathematics easier. Math is divided into two parts: Algebra and Geometry. In the first, there are more numbers, in the second, there are more figures.

In school, children start studying this science from addition and subtraction. Then follows the multiplication table, and finally Algebra and Geometry.

If mathematics is not clear to you than it is useless to go further.

Some ancient theorems are still relevant. For example, the Pythagorean theorem or Pythagors' theorem:

a²+b²=c²

In this essay I told about one of many sciences. Next time I will write about another science and its history.

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