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Photographic gallery.  Thousands of particles under the microscope.
Sludge from Transformer Oil Through the Microscope


These spheres form as the beginning of sludge in transformer oil. They tend to be brown to black in color. They are spherical because they form in the oil itself.

Transmitted Oblique Off Crossed Circular Polarized Light


Significance in the Environment:

Characteristic Features:

Associated Particles: