Galvanizing protects in two ways: 1  It forms a coating of corrosion-resistant zinc which prevents corrosive substances from reaching the more delicate part of the metal. 2  The zinc serves as a sacrificial anode so that even if the coating is scratched, the exposed steel will still be protected by the remaining zinc.he earliest known example of galvanizing of iron, encountered by Europeans is found on 17th century Indian armor in the Royal Armouries Museum collection. It was named in English via French from the name of Italian scientist Luigi Galvani.
Keyboard and pedals. Almost every modern piano has 88 keys (seven octaves and a bit, from A0 to C7). Many older pianos only have 85 (from A0 to A6), while some manufacturers extend the range further in one or both directions.
One string (i.e. in piano music, depress the soft pedal, altering, and reducing the volume of, the sound). For most notes in modern pianos, this results in the hammer striking two strings rather than three. Its counterpart, tre corde (three strings), is the opposite: the soft pedal is to be released.