Polarizing Microscopy Studies Research Articles

Spiral Cleavage of Mica

We chanced on a slice of mica which was cleaved spirally. The spiral lamella was several hundredths mm thick. Detailed observations on the structure of this specimen including polarization microscopic and X-ray studies are described. A tentative explanation of the origin of this unusually thick growth-layer is proposed assuming that an external force, which was exerted during the formation of the crystal, caused the left and right halves of the crystal to make a small relative rotation around the a -axis.

Optical polarization and electrone microscopic study on heat shortening of collagen fibers

Es wird der Vorgang der Warmeverkurzung bei Kollagenfasern im licht- und elektronenmikroskopischen Bereich untersucht und beschrieben: