موسوعة العلمـاء و المخترعين .. العلمـاء بالترتيب حسب اسم الشهرة .. الحرف ط

Encyclopedia of Scientists and Inventors.. Scientists in order according to their nickname.. The letter T

⏹ Thales, Thales

Greek mathematician and astronomer (640-546 BC).

Thales worked at the beginning of his youth in trade. Then he turned to study mathematics and astronomy. He became famous for his wisdom until he became one of the Seven Wise Men of Greece. Some workers in the history of science consider Thales the first scientist to appear in Greece. The date of the solar eclipse was set on the twenty-eighth of May of the year 585 BC. And this happened as he expected, and that was the first calculated scientific prediction of the occurrence of an eclipse that was recorded in history. Credit goes to Thales for his discovery of static electricity as a result of rubbing amber with silk. Thales was able to calculate the height of the pyramid by measuring the length of its shadow (equilateral hour) by installing a standing rod of known length and waiting until its length matches the length of his shadow. Thales developed a number of theories related to the equilateral triangle. And about the intersection of lines, and the angle in the semi-circle and others. However, Thales believed that the earth was a disk floating on water, and that water was an individual element.