Democritus

Democritus was an ancient Greek philosopher born in Abdera of  Thrace, Greece.

 

He believed that matter is made up of things that cannot be destroyed and which are invisible, the atoms.

Also, he was the first who understood that the galaxy is the light of long-distance stars. He was one of the first scientists who said that our world has also got other “worlds” with life on them.

Democritus dealt with all areas of human knowledge: maths, physics, cosmology, astronomy, biology, geography, history, and education.

Nicole Panayiotatou, Grade 2, 2nd Junior High School of Paralia

 

Sosigenes of Alexandria

An ancient Greek astronomer, mathematician and philosopher (1st century BC) from Alexandria in Egypt.

In 46 BC, after a command by Julius Caesar, he reformed the calendar of 365 days to the new Julian calendar and he added 1 day every four years. To get this correction, year 46 BC lasted 445 days.

Nicole Panayiotatou, Grade 2, 2nd Junior High School of Paralia.