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Click Here For Best Selection Of High Quality Polarizing Microscope

Click Here For Best Selection Of High Quality Polarizing Microscope

In the field of optical mineralogy, refraction is defined as a phenomenon wherein a ray of light is bent when it pass from one mineral to another. It has been also known that the refractive index of a certain mineral is given by the ratio of the sines of the angles of incidence and refraction of light passing from air into the mineral. It is however, important to note that the refractive index of air is taken to be 1.

            It has been simply explained and shown in optical mineralogy studies that the refractive index of a substance is equal to the ratio between the velocity of light in air and in the substance. Thus, the higher the refractive index of a mineral, the slower is the movement of light as it pass through it. Common minerals are usually found having the refractive index value ranging from 1.43 to 3.22. It has been observed in optical mineralogy studies that isotropic minerals can be given a single value of refractive index. Anisotropic minerals, on the other hand, can be found displaying the phenomenon of double refraction.



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Thursday, April 16th, 2009 at 2:32 am
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Optical Mineralogy
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Click Here For Best Selection Of High Quality Polarizing Microscope