Manganin

Two coils of manganin wire run in the paraffin at opposite sides of the bulb (outside the field of vision), coupled to brass terminals on the wooden frame by platinum wire fused into the glass. ❋ Unknown (N/A)

Like German silver, manganin changes in resistance on winding, and coils made of it require to be artificially aged by heating to 150° for five hours before final adjustment. ❋ Richard Threlfall (N/A)

The method of treatment above described suffices to render coils of manganin constant for at least a year (in 1892 the tests had only been made for this time) within a few thousands per cent. ❋ Richard Threlfall (N/A)

On the whole, manganin appears to be the best material for coil boxes and "secondary" resistance standards. ❋ Richard Threlfall (N/A)

After annealing as for manganin it can be made into serviceable standards which do not change more than a few thousandths per cent. ❋ Richard Threlfall (N/A)

Other experiments in which the manganin wire was immersed in paraffin oil did not exhibit this effect, though stronger currents were passed. ❋ Richard Threlfall (N/A)

To vary the current passing through the manganin heating coils in the air-spaces next the zinc wall, a series of resistances is installed connected directly with the rheostat R_ {2} in fig. 17. ❋ Francis Gano Benedict (1913)

The direct current furnished the building is caused to pass through a variable resistance for adjusting minor variations in voltage and then through the mil-ammeter into a manganin resistance-coil inside the chamber, having a resistance of 84.2 ohms. ❋ Francis Gano Benedict (1913)

Two leads from the terminals of the manganin coil connect with the voltmeter outside the chamber, and hence the drop in potential can be measured very accurately and as frequently as is desired. ❋ Francis Gano Benedict (1913)

At present the best results have been obtained by using enameled manganin wire. ❋ Francis Gano Benedict (1913)

Iron wire, German silver wire, or the various trade brands of resistance wire, of which nichrome, calido, and manganin are samples, can be used. ❋ Frederick Irving Anderson (1912)

Nichrome wire has a resistance 60 times that of copper; and manganin wire has a resistance 65 times that of copper, of the same gauge. ❋ Frederick Irving Anderson (1912)

(a) Figure below shows a uniform manganin wire XY of length 100 cm and resistance 9 ome, connected to an accumulator D of emf 4V and internal resistance 1 ome through a variable resistance R, E is a cell of emf 1.8 V connected to the wire XY via a jockey J and a central zero galvanometer G. ❋ Unknown (2010)

[1893], A, p. 390) has had some experience with manganin carrying comparatively heavy currents, under which circumstances its resistance when immersed in water was found to rise in spite of the varnish which coated it. ❋ Richard Threlfall (N/A)