National Geographic Readers: Ibn al-Haytham

National Geographic Readers: Ibn al-Haytham — page 1
Who Was Ibn al Haytham Al Hasan Ibn al Haytham al HAS un IB un al HAY thum was an Arab scholar who lived in the 10th and 11th centuries He was an expert in science and math He made important discoveries about light and about the way vision works He also used a new way to study science that scientists still use today Ibn al Haytham was one of the great thinkers of his time Since then his ideas have helped other scientists make new discoveries of their own Many people think he was one of the most important scientists ever to live Centuries One way to measure time is in centuries A century is a period of 100 years For example the years 1 to 99 1st century 100 to 199 2nd century 200 to 299 3rd century and so on