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.
There's even a piano made today--the BÃ¶sendorfer Imperial Concert Grand--which has 96 keys; the bass notes go all the way down to C. It's nine-and-a-half feet long and weighs almost a ton. Q: How many strings does a piano have? A: It depends on the piano. Each note has three strings in the treble, two strings in the tenor and part of the bass, and only one in the very low bass. One of ours has 65 trebles (X 3=195), 12 tenor/bass (X 2=24), and 11 single low bass, so it comes out to 230. But that's a large grand, so you need to look in your piano and count them up.