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.
Pierre Henri Hugoniot Pierre-Henri Hugoniot (born in Allenjoie, Doubs, France on June 5, 1851 – died in Nantes, France in February 1887) who mostly lived in Montbéliard, (Franche-Comté). He was an inventor, mathematician, and physicist who worked on fluid mechanics, especially on issues related to material shock.