sharing our knowledge.
Photographic gallery.  Thousands of particles under the microscope.

Calcite and Optical Glass

This is a fragment of calcite and two different optical glasses, 1.66 and 1.67, in a 1.664 refractive index medium.

Transmitted Brightfield Illumination

Definition/Function:

Significance in the Environment:

Characteristic Features:

Associated Particles:

References: