Physics

Archimedes


Having lived around the 3rd century BC, there are not many records about Archimedes' life. What is known is that he was born in 287 BC in Sirucasa, an eastern Greek city-state at the time and is now the region of Sicily, and that his father was an astronomer named Phidias.

According to the few records about his life, Archimedes would have studied in Alexandria as a young man, where he would have met Euclid and endeavored to seek physical truths, especially in the field of mechanics, where he developed great works of war engineering at the time.

Among some of the warlike works attributed to Archimedes is the idealization of the “ustoric mirrors”, which would have been used by Sirucasa's defenders to burn Roman ships by concentrating sunlight to a certain extent.

It is told how the sage would have solved the problem of number π, calculating its value through the first infinite sum known.

Also attributed to him is the famous phrase: "Give me a foothold and I will lift the earth," which referred to the leverage principle he had established.

As a great geometer, it had the largest collection of perfectly determined center-of-mass flat figures known at the time.

The most legendary episode of his life is the day he walked the streets of Sirucasa naked after solving the problem of how to weigh the gold and silver measurements on a crown, shouting: Eureka! Eureka! Which means: Found it! Found it!

Much feared and admired by the Romans for his great weapons, he was killed in an invasion of his city in 212 BC, when, writing on the sand, he refused to obey a soldier who had ordered the passage, saying that he would not interrupt your reasoning.

At his request, a cylinder circumscribed to a sphere was engraved on his grave, one of his favorite mathematical deductions, used to calculate the area of ​​a spherical surface.