
order 2: The mineral calcite exhibits birefringence (double refraction), and therefore has two d ifferent values for its major power of refraction. A calcite crystal was placed on pass away of imprint and rotated in order to see the disagreement betwixt the two rays, the ordinary ray and the extraordinary ray. A polarizer was thence used to look at the images formed by the calcite. Method 3: In order to determine the express points in a plastic object, we used a photoelastic impression where we looked at the object through ...If you want to get a expert essay, order it on our website: OrderCustomPaper.com
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