Title: What was observed by Julius Planer in 1861?
Author(s):

L. Lisetski (Institute for Scintillation Materials, STC "Institute for Single Crystals" of the National Academy of Sciences of Ukraine, Kharkiv 61001, Ukraine)

In 1861 Julius Planner published a paper in which he described his observations of selective light reflection in monotropic cholesteric liquid crystal phase of cholesteryl chloride that he synthesized. We repeat his experiments and report in modern interpretation what indeed was observed by Planer at that time.

Key words: cholesteryl chloride, monotropic cholesteric liquid crystal phase
PACS: 61.30.-v; 64.70.pv; 82.70.Dd

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