The development of diamond technologies has borne that out since the material was first discovered. Diamond’s allure as a gemstone and its use as a tool due to its hardness have encouraged ...

The resulting chemical reaction produces a gas, causes a color change with an indicator, and results in a decrease in temperature. Students then carry out a second reaction with calcium chloride and ...

It’s been 15 years since the global effort to ban conflict diamonds began. But the industry is still tainted by conflict and misery Story by Aryn Baker/Tshikapa Photographs by Lynsey Addario for ...

In the pendant surrounding the Hope Diamond are 16 white diamonds, both pear-shapes and cushion cuts. A bail is soldered to the pendant where Mrs. McLean would often attach other diamonds including ...

CaF 2, activated by various dopants, is a TL phophor widely used in many dosimetric applications. It is used as natural CaF 2 or with different activators as Mn, Dy and Tm [1,2,3,4,5,6,7,8,9,10].

Calcium's leading role is legendary. In fact, there seems to be no end to calcium's repertoire: It strengthens bones and teeth and new studies suggest that it may also prevent colon cancer, and ...

An electron is transferred from sodium to chlorine. Sodium becomes a positive ion and chlorine becomes a negative ion. The positive and negative ions attract each other and form the ionic compound ...

Sodium Chloride is an alkali halide with an fcc crystal structure. The basis is two ions, a sodium cation and a chlorine anion. The crystal lattice parameter is 0.563 nm. The diagram shows both a unit ...

Calcium is essential for bone health. Yet 16 percent of 11–18 year olds and 9 percent of 16–49 year olds consume less than the Lowest Reference Nutrient Intake (LRNI) of calcium through food ...

Calcium is an important mineral that our bodies need to keep us healthy. Having cancer can affect the amount of calcium in the body. Why do we need calcium? Nearly all the calcium in the body is ...

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