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.
Best Answer: The piano comes in many different styles, designs, shapes and sizes. Pianos have two basic categories: the vertical and horizontal pianos. Vertical Pianos-They are called vertical pianos because of their height and the position of the strings. The height of this kind of piano range from 36 to 60 inches.There are 4 types: Horizontal Pianos-Also known as grand pianos.They are called horizontal pianos because of their length and the placement of their strings There are 6 basic types: To identify the sub-types go to http://musiced.about.com/od/beginnersgui... from which the above was taken.here are 4 types: Horizontal Pianos-Also known as grand pianos. They are called horizontal pianos because of their length and the placement of their strings There are 6 basic types: To identify the sub-types go to http://musiced.about.com/od/beginnersgui...