Pyromagnetism.
The development of new magnetic properties or alteration of magnetic
sensibility in a body by heat. Nickel and iron are much affected as
regards their paramagnetic power by rise of temperature.
Fig. 280. PYROMAGNETIC GENERATOR.
Pyrometer, Siemens' Electric.
An instrument for measuring high temperatures by the variations in
electric resistance in a platinum wire exposed to the heat which is to
be measured.
Q.
Symbol for electric quantity.
Quad.
(a) A contraction for quadrant, used as the unit of inductance; the henry.
(b) A contraction for quadruplex in telegraphy.
[Transcriber's note: A modern use of "quad" is a unit of energy equal to
1E15 (one quadrillion) BTU, or 1.055E18 joules. Global energy
production in 2004 was 446 quad.]
Quadrant.
A length equal to an approximate earth quadrant, equal to 1E9
centimeters. It has been used as the name for the unit of inductance,
the henry, q. v.
Synonym--Standard Quadrant.