The birefringent effect (using calcite) was first described by the Danish scientist Rasmus Bartholin in 1669.
Thomas Bartholin | Rasmus Thrane Hansen | Rasmus Seebach | Rasmus Klump | Rasmus Bartholin | Rasmus Stjerne | Rasmus Hansson | Rasmus Bjerg | Colby Rasmus | Caspar Bartholin the Elder | Rasmus Sigvardt | Rasmus Seebach (album) | Rasmus Mogensen | Rasmus Henning | Rasmus Hardiker | Rasmus Grønborg Hansen | Rasmus Fleischer | Hans Rasmus Astrup | Cory Rasmus | Caspar Bartholin the Younger | Caspar Bartholin |
Reichelt traveled through Northern Europe some time after 1666 and met other notable 17th century scientists and thinkers such as Jan Hudde, Johannes Hevelius, Andreas Concius, Henrik Ruse, Johannes Meyer, Rasmus Bartholin, and Adam Olearius.