Trees Every Child Should Know

Published in 1690, Treatise on Light stands as one of the most significant scientific volumes on light prior to Newtons Opticks. This groundbreaking work delves into the nature of light, exploring its velocity and the fascinating phenomena of refraction and reflection when it interacts with surfaces. A significant portion of the book is dedicated to the intriguing double refraction observed in Iceland crystal, with all conclusions meticulously supported by geometric proofs. Christiaan Huygens (1629 - 1695), a distinguished physicist and astronomer, made remarkable contributions, including the concepts of centrifugal force and collision laws, while championing the wave theory of light. As a contemporary of great minds like Galileo and Descartes, Huygens also held membership in the French Royal Society from 1663. (Summary by Availle)