Thin Section Slides


When viewing a surface under high magnification, every teensy weensy difference in the subjects topography can/will take it out of the optical system’s depth of field. Meaning – when you focus on point-a, any other point above or below it will not be in focus. So – to view stone samples, the de-facto method is to have a thin-section slide created; a 30µm slice of stone that is glued to a non-standard glass slide. The surface is polished to an exacting standard so it’s exceedingly level across the sample.

Escher Thin Section

© Keith V Johnson 2014 - 2018