When looking at calcite under a microscope, a scientist would immediately recognize the crystalline form of calcium carbonate by its rhombohedral appearance. That is, calcite is shaped like a ...

I HAVE recently found that hydrogen canal rays give a complex reflection pattern when they are allowed to fall on a cleavage face of a calcite crystal at almost grazing incidence. Fig. 1 shows one of ...

Ancient lore has suggested that the Vikings used special crystals to find their way under less-than-sunny skies. Though none of these so-called "sunstones" have ever been found at Viking ...

In a discovery that could have implications ranging from the design of new materials to an understanding of the origin of life, researchers have discovered how the microscopic orientation of amino ...

A transparent calcite crystal found 30 years ago on a ship that sank in the English Channel in 1592 could help explain how Vikings were able to sail from Norway to North America 1,000 years ago ...

Ancient lore has suggested that the Vikings used special crystals to find their way under less-than-sunny skies. Though none of these so-called "sunstones" has ever been found at Viking archaeological ...

University of Nottingham provides funding as a founding partner of The Conversation UK. However, there are also several reports in Nordic sagas and other sources of a sólarsteinn “sunstone”. The ...

Have you ever struggled with the concept of quantum measurement, feeling it’s unnecessarily abstract? You’re not alone. Enter this guide by [Mithuna] from Looking Glass Universe, where she circles ...

Supply optical Calcite Crystal (Iceland Spar) both in raw material, semi-finished form or as finished components ready to be used. We supply optical Calcite Crystal (Iceland Spar) both in raw material ...