Niobium and Tantalum
January 2005 by Edgar B. Heylmun, PhDNiobium (columbium) and tantalum are related metals that usually occur together and are associated with vanadium on the periodic chart of the elements. Both metals have seen increased usage in high-tech applications in recent years because of increased availability.
For those of you who don’t have the time or the means available to find gold, or you are just in the wrong part of the country, there are plenty of options available to purchase precious metals.
Swedes were the first to note variations in the Earth's magnetic field, circa 1640, and they were the first to use the dip needle. They made the first magnetometer in 1870.
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