Archimedes--BC287‐‐BC212

[English: Archimedes / Greeks: Ἀρχιμήδης]
Archimedes is an ancient Greek mathematician, physicist, engineer, inventor, and astronomer. He is one of the top scientists in classical antiquity. He devised claw weapons and ray weapons, and used polygons to estimate pi. Archimedes was a person who lived in ancient Roman times, and his life was estimated based on records by historians of the later world after Archimedes died.

Every historical figure relies on records, but Archimedes is said to have been compiled hundreds of years after his death, so there are many uncertainties. Above all, Archimedes left a lot of work.

Archimedes' friends and others have not left the biography,

and only the last moment supported by the war record is known exactly.

Archimedes died in the Roman siege of Syracuse, exactly as the story of his death reveals.

For example, Archimedes' year of birth is "estimated" by back-calculating from the age of his death.

Archimedes's interest is in the construction of a logical system based on a pure theoretical structure based on aesthetics, and the practical aspect is remarkable.

Specifically, what is Archimedes' principle?
It is a law in fluid mechanics discovered by Archimedes.
Before discovering the parameter of pressure
He took advantage of the one-sided effect of pressure.
The part where there was an object to think logically
He considered the force exerted by space as buoyancy.
As a formalized form,
"An object in a fluid (liquid or gas) is a target object.
With the same size as [the weight of the fluid being pushed away]
Receives buoyancy in the opposite direction (vectorly) "
Is the principle. In addition, in pi and sequence
Archimedes is leaving work.

Returning to the story, it is the story of Archimedes' death.
Marcus, a soldier who knew his reputation,
He ordered to his stuff as Archimedes not to harmed !
When Roman soldiers entered his house, Archimedes
Figure (circular) drawn on the sandboard (the role of a notebook now)
On top of that, Archimedes was thinking about something.
The Roman doesn't understand that the room he entered is

Archimedes' room.

Roman soldiers heard the name, but Archimedes was absorbed
Ignored, and the soldiers got angry and killed Archimedes.

Archimedes' last words
"Don't break my circle!" (Noli turbare circulos meos!)

It is said that it was. Military personnel violate orders, about Archimedes.
He is said to have suffered because he was very regrettable to had  killed Archimedes.