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==BORON== | ==BORON== | ||
'''B''' | '''B'''Boron is an essential plant nutrient. Whereas lack of boron results in boron deficiency disorder, high soil concentrations of boron may also be toxic to plants. As an ultratrace element, boron is necessary for the optimal health of rats and presumably other mammals, though its physiological role in animals is not yet fully understood. | ||
Boron is a trivalent metalloid element which occurs abundantly in the evaporite ores borax and ulexite. | |||
Several allotropes of boron exist: amorphous boron is a brown powder and crystalline boron is black, extremely hard (about 9.5 on Mohs' scale), and a poor conductor at room temperature. Elemental boron is used as a dopant in the semiconductor industry, while boron compounds play important roles as light structural materials, insecticides and preservatives, and reagents for chemical synthesis. | |||
[http://en.wikipedia.org/wiki/Boron Boron Wiki] | |||
==Filming Concepts== | ==Filming Concepts== | ||