DEFINITION OF POLARIZING MICROSCOPE

The polarizing microscope is an

optical measuring device and is also used as an instrument for

the detailed examination of specimens. In addition to standard

microscope optics, the microscope contains two polarizpolarizing

ing lenses. These lenses polarize the incoming light source to

enable the measurements to be made. There is one polarizer

in the condenser and another on the slider above the objective,

both are adjustable and can be set to examine different

specimens. The specimen is illuminated with the polarized

light, and its rotation or twinning of the light can be determined.

The polarizing microscope is particularly useful in the

study of rocks and minerals with particular characteristics.

Scientists in the fields of chemical microscopy and optical

mineralogy mostly use the polarizing microscope for its ability

to polarize the light onto a specimen.

See also PETROGRAPHY; PETROLOGY.

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