News tagged with chromium

The Spin Doctor

An electron spin can be compared to the needle of a compass that points either north or south. Some electrons in a full shell point up, canceling out the electromagnetic fields of an equal number of electrons that point down.

dateJan 13, 2011 in General Physics
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Percolating a solution to hexavalent chromium

The metal chromium is an essential nutrient for plant and animal metabolism, but it can accumulate to toxic and hazardous levels in the environment when discharged in industrial waste water; a point made infamous by the movie ...

dateOct 12, 2010 in Environment
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