उच्च विद्युत प्रतिरोध और कम तापमान गुणांक के साथ तांबा और निकल का एक मिश्र धातु; प्रतिरोध तार के रूप में उपयोग किया जाता है

Noun:

Constantan,

constantan's Usage Examples:

Constantan An alloy of 40% nickel and 60% copper, with a high volume resistivity and almost negligible temperature coefficient.

Nickel is used for the manufacture of domestic utensils, for crucibles, coinage, plating, and for the preparation of various alloys, such as German silver, nickel steels such as invar (nickel, 35.7%; steel, 64.3%), which has a negligible coefficient of thermal expansion, and constantan (nickel, 45%; copper, 55%), which has a negligible thermal coefficient of its electrical resistance.

For this purpose it must be an alloy such as manganin or constantan.

a b, constantan wire; c d, thermojunction; G G, galvanometer terminals; 0 0, antenna and earth terminals.

In the inner space between the test tubes one pair of these platinum wires are connected by a fine constantan wire about 02 mm.

A pair of fine wires of iron and constantan are twisted together in the middle, and one pair of unlike ends are connected to a galvanometer.

constantan's Meaning':

an alloy of copper and nickel with high electrical resistance and a low temperature coefficient; used as resistance wire