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Click Here For Best Selection Of High Quality Polarizing Microscope

Click Here For Best Selection Of High Quality Polarizing Microscope

It has been observed in the field of optical mineralogy that majority of the minerals polarize the light that passes through them. There maybe are two rays of light produced during the process and their vibration directions are both at right angles to each other. Minerals that could affect the movement of light at this manner are classified as anisotropic minerals. With the generalization supported by many experiments made by various mineralogists and petrologists, all crystals forms except the ones under the cubic system are determined as anisotropic. However, it is also important to note that there are few anisotropic that in practice might appear isotropic.

            In the case of cubic minerals, they do not polarize the light that passes through them and they actually do not vary directionally in their effect on light. Cubic minerals are determined as isotropic, likewise glass and amorphous substances.

            It is important to note that the isotrophism of a mineral species directly reflects the high degree of regularity in the atomic structure of cubic minerals. The same is true with the specific details of anisotropic optical properties that reflects the particular symmetry if the crystals.



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Thursday, April 16th, 2009 at 2:29 am
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Optical Mineralogy
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Click Here For Best Selection Of High Quality Polarizing Microscope