Double Refraction1669
Publishes observations of double refraction in Iceland spar.
Historical person
Historical biography and chronological timeline for Rasmus Bartholin, based on 2 World History Database records associated with Denmark.
Publishes observations of double refraction in Iceland spar.
Shows that one crystal can split a light ray into two paths.
Physician and Scientist
This biography is assembled from World History Database records filtered by country and personal-name fields. Exact duplicate display records are removed. The database is an index rather than a complete narrative biography; formal research should verify entries against relevant primary or specialist sources.