Eratosthenes (27-196 B.C.), a Greek geographer and astronomer. He was the first to determine the circumference of the earth.
Archimedes, (287-212 B.C.), a Greek mathematician and physicist. He was the greatest mathematician of ancient times and ranks as one of the great scientists of all times. See more »
Pythagoras, a Greek mathematician and philosopher who lived in the sixth century B.C., and gave his name to a body of facts and theories. See more »
Alcibiades (450-404 B.C.), an Athenian general and statesman. His unprincipled leadership helped cause the defeat of Athens in the Peloponnesian War (43-404 B.C.). See more »
Aristarchus of Samos, (310-250 B.C.), a Greek astronomer, believed to have worked in Alexandria, Egypt. See more »
Eratosthenes (27-196 B.C.), a Greek geographer and astronomer. He was the first to determine the circumference of the earth. See more »
Euclid of Alexandria a Greek mathematician who lived about 300 B.C. He is called the Father of Geometry. See more »
Hero, or Heron, of Alexandria, a Greek engineer and mathematician of the first, second, or third century A.D. See more »