constantan

2 definitions found

constantan - Collaborative International Dictionary of English v.0.48 :

  constantan \constantan\ n.
     a copper-nickel alloy composed of approximately 55 per cent
     copper and 45 per cent nickel, with high electrical
     resistance and a low temperature coefficient; it is used as
     resistance wire and in thermocouples.
  
     Note: It has a resistance factor [rho] of 44.1 x 10^-6
           ohm-cm at 0[deg] C, in comparison to the value 1.71 x
           10^-6 ohm-cm for pure copper and 7.8 x 10^-6 ohm-cm
           for pure nickel. It is similar to the alloy Eureka,
           which has a [rho] = 47 x 10^-6 ohm-cm. --Handbook of
           Ch. 61.
           [WordNet 1.5 +PJC]

constantan - WordNet (r) 2.1 (2005) :

  constantan
      n 1: an alloy of copper and nickel with high electrical
           resistance and a low temperature coefficient; used as
           resistance wire [syn: constantan, Eureka]