Assertion: calcite's cleavage | /r/AtLocation | his book
Facets:
Source sentences:
text: The strong double refraction and perfect cleavages of Iceland-spar were described in detail by Erasmus Bartholinus in 1669 in his book Experimenta Crystalli Islandici disdiaclastici; the study of the same mineral led Christiaan Huygens to discover in 1699 the laws of double refraction, and E. L. Malus in 1808 the polarization of light.
text: The strong double refraction and perfect cleavages of Iceland-spar were described in detail by Erasmus Bartholinus in 1669 in his book Experimenta Crystalli Islandici disdiaclastici; the study of the same mineral led Christiaan Huygens to discover in 1699 the laws of double refraction, and E. L. Malus in 1808 the polarization of light.