More than 40 years ago, pioneering tectonic geophysicist J. Tuzo Wilson published a paper in the journal Nature describing how ocean basins opened and closed along North America's eastern seaboard.

AN article by W. P. Mason (Bell Lab. Rec., 22, No. 6; February 1944) discloses some of the results of researches carried out to determine the frequency performance of quartz plates cut and oriented in ...

Scientists are intrigued by how gold nuggets form, often tucked in quartz veins. The process seems to involve earthquakes and electricity.

X-plate Cultured Quartz provides waveplates (retardation plates) and other types of polarizing optics with diameters up to 150 mm. The quartz is grown using a proprietary hydrothermal technique that ...

Crystal Quartz, Diameter 25.4 x Thickness 1.0mm, 2.0mm, 3.0mm, 4.0mm, 5.0mm, 6.0mm A retardation plate is an optically transparent material which resolves a beam of polarized light into two orthogonal ...