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  1. The Michel-Levy chart is utilized by comparing the highest-order interference colors displayed by the specimen in the microscope to those contained on the chart. Once the appropriate color has been located, the nearest vertical line along the interference color is followed to the nearest horizontal line representing the known thickness.

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  2. Since the Michel-Lévy chart shows the interrelationships between thickness, birefringence, and interference color, the microscopist can determine any one of these from the chart if they know the other two. Several examples will illustrate this: Suppose a cylindrical synthetic iber 15 μm in diameter shows a maximum interference color

  3. Michel-Lévy interference colour chart issued by Zeiss Microscopy. In optical mineralogy, an interference colour chart, also known as the Michel-Levy chart, is a tool first developed by Auguste Michel-Lévy to identify minerals in thin section using a petrographic microscope.

  4. 15 de jun. de 2018 · The tutorial initializes with a classical Michel-Levy graph appearing in the window, which contains interference colors from the first to the sixth order, and the associated diagonal birefringence lines traversing the entire chart from the lower left-hand corner to the upper and right-hand boundaries of the graph.

  5. The Michel-Lévy chart is a rapid way of determining birefringence from the particle thickness and the maximum interference color it is displaying. The chart is a graphical solution to the above equations. Figure 4. Let’s look a little more closely at the Zeiss rendition of the Michel-Lévy chart – Figure 4.

  6. 1 de dic. de 2003 · The Michel-Levy chart is utilized by comparing the highest-order interference colors displayed by the specimen in the microscope to those contained on the chart. Once the appropriate color has been located, the nearest vertical line along the interference color is followed to the nearest horizontal line representing the known thickness.

  7. 1 de sept. de 2012 · Verification of the calculated Michel-Lévy chart by optical microscope observations. (a–c) are images of olivine grain with a wedge-shaped grain boundary toward epoxy, giving a rim-ward thinning of the grain and hence also decreasing interference colour.