The tantalum filament was quickly followed by osmium and by tungsten in this country.
Pure tantalum is harder than steel; it may be drawn into fine wire; and its melting-point is very high (about 5100°F.
The tantalum lamp had no opportunity to become established, because the tungsten lamp followed its appearance very closely.
A century elapsed after its discovery before von Bolton produced the first tantalum filament lamp.
The zirconium and tungsten wire lamps are equal to or surpass the tantalum lamp in efficiency and are capable of giving light, with a useful commercial life, at an efficiency of about one watt per candle.
In the case of the tantalum lamp the exponent x has a value near to 6, but the exponent y is a number near to 4, and the same for the osmium filament.
Bolton invented methods of producing tantalumin the form of a long fine wire 0.
The resistance of tantalum increases with the temperature; hence the temperature coefficient is positive, and sudden rises in working voltage do not cause such variations in candle-power as in the case of the carbon lamp.
Columbium is a metal closely resembling tantalum and tantalum found a use as electric light filaments.
I brought along a piece of platinum from the power plant, and something that I think is tantalum from Barkovis' description of it.
How are you going to separate out the tantalumand the others you want from the ones that you don't want?
Chemically related to vanadium are the two elements tantalumand columbium or niobium.
Tantalum has in recent years been turned to economic service, being employed, in the same manner as tungsten, for the production of the filaments employed in incandescent electric lighting.
Immediately following the introduction of the tantalum lamp came the tungsten lamp, which because of its wonderfully increased capability for producing light has extended artificial illumination to a degree almost beyond comprehension.
Meanwhile, several investigators began work with tungsten and a similar metal called tantalum because of their extremely high melting points, high resistance, and other technical characteristics favourable for an incandescent filament.
With increasing amount of tantalum the specific gravity increases up to 7.
It is then dissolved in hydrofluoric acid and heated in order to expel silicon fluoride; finally the columbium, tantalum and titanium fluorides are separated by the different solubilities of their double fluorides (C.
All but the tantalum lamp operates equally well on alternating or direct current.
The tantalum cannot be recommended for alternating-current circuits.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "tantalum" in a variety of sentences. We hope that you will now be able to make sentences using this word. Other words: gold; iron; lead; metal; silver
