The following are more complex:
I. II.
Palladium, 65 to 75 parts 45 to 50 parts
Copper, 15 to 25 " 15 to 25 "
Nickel, 1 to 5 " 2 to 5 "
Silver, 3 to 10 " 20 to 25 "
Gold, 1 to 2-1/2 " 2 to 5 "
Platinum, 1/2 to 2 " 2 to 5 "
Steel, 1 to 5 " 2 to 5 "
These alloys are used for balance springs, as well as for the balance
wheels and escapement parts of watches. The elasticity of recently
produced springs has been found to be very satisfactory.
Page Effect.
The sounds produced by magnetizing and demagnetizing a bar of iron or
steel; the magnetic tick. The sounds are strong enough to produce a
telephonic effect. (See Magnetic Tick.)
Palladium.
A metal of the platinum series. It has the highest power of occlusion,
q.v., of all metals. It is the characteristic ingredient of non-magnetic
watch alloys.
Palladium used as an electrode in the electrolysis of water will occlude
936 volumes of hydrogen, and the hydrogen-palladium alloy will exceed in
size the original electrode.
Fig. 255. LUMINOUS PANE.
Pane, Luminous.
A pane of glass, one side of which has pasted to it a long zigzag strip
of tinfoil. A design is made by cutting through the strip. On
discharging a Leyden jar or an electric machine through the strip sparks
appear where the tinfoil is severed, thus producing the design in a
luminous effect. Many variations can be employed in their construction.