GIA’s laboratories use advanced instrumentation and research to deliver accurate grading, identification, and origin ...

With a vast expanse of natural splendor, South Dakota is rich in history, outdoor experiences and unique activities. In the Mount Rushmore State, visitors will find two of the world's longest ...

Calcite-type dichroscopes (figure 14 ... attribute’s effect on appearance is more complex and generally overlooked. A basic understanding of optical crystallography unlocks the secret of faceted ...

Harris, “A new explanation for the unusual critical behavior of calcite and sodium nitrate ... Salje, “The excess optical birefringence and phase transition in sodium nitrate,” Journal of Physics C: ...

Figure 1 shows the result of a FULLPATfull-pattern fit of individual standard patterns to a sample containing well-ordered phases (calcite, dolomite ... compare with results of other analyses, such as ...

When the German computer pioneer Konrad Zuse built the world’s first programmable computer in war time Berlin, it performed floating point arithmetic at a clock speed of between 5 and 10 Hz. The ...

For centuries, optical illusion puzzles have fascinated and mystified us, playing clever tricks on how we perceive the world. These captivating images aren’t just fun—they offer a glimpse into ...

These optical clocks are still being assessed, but already now, some are 100 times more accurate than cesium clocks. They will therefore become the future basis for the worldwide definition of the ...

Optical illusions are more than just captivating images that trick the eye—they are windows into how our minds perceive the world around us. These intriguing visuals, often designed to confuse ...

CALCIUM carbonate can exist in three polymorphic forms, which in the order of their usual stabilities are calcite, aragonite and vaterite. Calcite is the most stable and the least soluble ...

Apache Calcite is a dynamic data management framework. It contains many of the pieces that comprise a typical database management system but omits the storage primitives. It provides an industry ...