Universal turntable

from Wikipedia, the free encyclopedia

The universal turntable or Fyodorow table is an optical instrument that is used in combination with a microscope to characterize crystals and minerals . The device was invented in 1892 by the Russian mineralogist Evgraf Stepanowitsch Fyodorow . In German it is also called "U-Tisch", while the English name is universal stage .

In crystallography and mineralogy , the universal turntable is used as an object table of a polarization microscope to determine the geometric and optical properties of samples that are less than 50 μm thick, for example to find optical axes or planes of symmetry in crystals. Common models of the universal turntable allow samples to be rotated around two to five different axes .

Web links