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.
Louise du Pierry Louise du Pierry or Dupiery, née "Elisabeth Louise Felicité Pourra de la Madeleine" (30 July 1746 – 27 February 1807), was a French astronomer and professor.