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The differences between tantalum and niobium were demonstrated unequivocally in 1864 by Christian Wilhelm Blomstrand, [21] and Henri Etienne Sainte-Claire Deville, as well as by Louis J. Troost, who determined the empirical formulas of some of their compounds in 1865.
The claimed new elements pelopium, ilmenium, and dianium [19] were in fact identical to niobium or mixtures of niobium and tantalum. [20] The differences between tantalum and niobium were unequivocally demonstrated in 1864 by Christian Wilhelm Blomstrand [20] and Henri Étienne Sainte-Claire Deville, as well as Louis J. Troost, who determined ...
[15] [16] This confusion arose from the minimal observed differences between tantalum and niobium. The claimed new elements pelopium, ilmenium, and dianium [17] were in fact identical to niobium or mixtures of niobium and tantalum. [18] Pure tantalum was not produced until 1903. [19]
Apollo CSM with the dark rocket nozzle made from niobium-titanium alloy . Niobium is nearly always found together with tantalum, and was named after Niobe, the daughter of the mythical Greek king Tantalus for whom tantalum was named. Niobium has many uses, some of which it shares with other refractory metals.
We can think of the tantalum straight wire as a "gate" and the coiled niobium as a "control". The article by Buck [ 2 ] includes descriptions of several logic circuits implemented using cryotrons, including: one stage of a binary adder, carry network, binary accumulator stage, and two stages of a cryotron stepping register.
The similar reactivity of niobium and tantalum complicated preparation of pure samples and therefore several new elements were proposed, which were later found to be mixtures of niobium and tantalum. The differences between tantalum and niobium and the fact that no other similar element was present were unequivocally demonstrated in 1864 by ...
Most commonly, conventional superconductors such as niobium–titanium are used, [1] but high-temperature superconductors such as YBCO are entering the market. Superconducting wire's advantages over copper or aluminum include higher maximum current densities and zero power dissipation.
The similar reactivity of niobium and tantalum complicated preparation of pure samples of the metals and therefore several new elements were proposed, which were later found to be mixtures of niobium and tantalum. The differences between tantalum and niobium, and the fact that no other similar element was present, were unequivocally ...
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