In what year was the inventor of the Abbe prism born?
Abbe prism In optics, an Abbe prism, named for its inventor, the German physicist Ernst Abbe, is a type of "constant deviation dispersive prism" similar to a Pellin–Broca prism.
Marc-Auguste Pictet Marc-Auguste Pictet (] ; July 23, 1752 – April 19, 1825) was a scientific journalist and an experimental natural philosopher (physicist, chemist, meteorologist, astronomer) from Geneva, Switzerland.