Tantalum
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Tantalum is a chemical element; it has symbol Ta and atomic number 73. It is named after Tantalus, a figure in Greek mythology. Tantalum is a very hard, ductile, lustrous, blue-gray transition metal t
Tantalum single crystal and 1cm 3 cube
Tantalite, Pilbara district, Australia
Tantalum electrolytic capacitor
Tungsten
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Tungsten is a chemical element; it has symbol W and atomic number 74. It is a metal found naturally on Earth almost exclusively in compounds with other elements. It was identified as a distinct elemen
Tantalum
…ductile metal was produced by Werner von Bolton in Charlottenburg in 1903. Wires made with metallic tantalum were used for light bulb filaments until tungsten replaced it in widespread use. The name tantalum was derived from the name of the mythological Tantalus, the father of Niobe in Greek mythology. In the…
Wolfram evaporated crystals and 1cm 3 cube
Tungsten rod with oxidised surface
Wolframite mineral, with a scale in cm
Tungsten mining in Rwanda forms an important part of the country's economy.