In a petrographic microscope, the light is first polarized, then the thin section is placed in that beam of light and then that light passes through a second polarizer. A weird thing happens to ...

In a petrographic microscope, the light is first polarized, then the thin section is placed in that beam of light and then that light passes through a second polarizer.

Petrographic microscope image. Plane-polarized transmitted light photomicrograph of a thin section showing detail of cement paste. The image was taken at 200x magnification.

Eyjafjallajökull ash under a petrographic microscope in crossed-polarized light at ~40x. Image by Erik Klemetti. In this image, I've tried to identify the minerals in the ash.

Petrological microscope: This new lab is equipped with a Leica DM750P petrographic microscope with transmitted and reflected light capabilities. A 2.5 megapixel MC120 HD camera is attached to the ...

This isn't a normal microscope, but a petrographic microscope that utilizes the special optical properties of minerals cut thin, down to ~30 microns thick (we call them "thin sections").

A new archeological discovery has confirmed that tempered steel was used by artisans in the Iberian Peninsula to carve intricate motifs into hard rock stelae during the Final Bronze Age, earlier ...

The audience favorite, chosen by a March Madness-style bracket on UChicago’s social media channels, is “Fuchsia Bone,” a photograph of a fossil whale bone through a microscope taken by geophysical ...

Stanford study shows ocean biomass has risen over 540 million years, linking biodiversity to long-term ecosystem health.