Basically, you take a cross section of the rock sample and view it under a polarizing microscope.

Each type of fiber had a characteristic index, which could be measured with a polarizing microscope.

Named for their properties under a polarizing microscope.

He is noted for his study of sediments with the polarizing microscope, and was one of the pioneers in this field.

To test for these ranges, different fish eyelids were exposed to light generated from photometers and polarizing microscopes.

Polarizing microscopes show birefringence-the double refraction of crystals and fibers and some other materials.

The polarizer and analyzer are the essential components of the polarizing microscope, but other desirable features include:

There are two polarizing filters in a polarizing microscope - termed the polarizer and analyzer (see Figure 1).

Mr. Deedrick said he had used a polarizing microscope, a fluorescent microscope, a scanning electronic microscope and a comparison microscope to inspect the fibers.

The researchers used a diamond saw to cut thin slices of the bone, which were then examined under a polarizing microscope, an instrument often used by paleontologists and geologists.

The optical properties result from virtually pure zussmanite that was separated from thin sections, approximately 200 micrometres thick, under a polarizing microscope by means of a microdrill.

Phillips took out patents for improvements in metal production and refining, and was one of the first scientists to use the polarizing microscope to study rock and mineral structures.

On the second floor, there are four classrooms for first-year students, the first-year student teachers' room, lab, earth science laboratory, an admission officer's room, and a polarizing microscope room.

He was distinguished for his researches on extrusive rocks, their microscopic structure and origin; and he employed the polarizing microscope early on for the determination of minerals.

In the conoscopic mode of observation, in the old days often realized with a polarizing microscope, a directions image is generated in the rear focal plane of the objective lens.

This can be verified simply by investigating, e.g., a polycrystalline material under a polarizing microscope having the polarizers crossed: If the crystallites are larger than the resolution limit, they will be visible.

Mineralogy, Petrology & Paleontology Laboratories: students and research model polarizing microscopes with photographic facility heating-freezing stage for fluid inclusion analysis Stereoscopic zoom microscopes, X-ray powder diffractometer, isodynamic magnetic separator.

He placed a slide in the stage of a polarizing microscope, which, like Ray-Ban sunglasses, reduced glare, splitting light in different waves with different refractive index values to give us yet another clue as to the identity of the material.

Microcline is identical to orthoclase in many physical properties; it can be distinguished by x-ray or optical examination; viewed under a polarizing microscope, microcline exhibits a minute multiple twinning which forms a grating-like structure that is unmistakable.

In the polariscope, and in the polarizing microscope, specimens may be illuminated from below by light that is polarized by the polarizer, and viewed from above through an analyzer that transmits light of only one direction of polarization.

The composition of a plagioclase feldspar is typically denoted by its overall fraction of anorthite (%An) or albite (%Ab), and readily determined by measuring the plagioclase crystal's refractive index in crushed grain mounts, or its extinction angle in thin section under a polarizing microscope.

For him then to fail to identify it is then, quite simply, to fail as an adult, as a role model, as a human being - and no excuse will be brooked about needing to break the stone apart and look at it under a polarizing microscope, or trickle acid onto it to see if it fizzes.