geddy wrote:hows about the gel they use for making better contact when using ultrasound
gear. Seems that would be very conductive and protective at the same time
Totally different! Sound is a mechanical wave which needs DENSE media (i.e., heavy materials and liquids) for its best propagation/transmitting, e.g., air and any of the light foams are BAD sound transmitters, whereas lead and water are GOOD ones, dense ceramics like hot-pressed silicon nitride jet engine turbine blades and the piston and piston sleeves used in the most modern radial tank engines, etc., IS THE BEST!
Good electrical conductivity, or the ability to allow electrons to flow from one atom to another, needs materials that are made of atoms with loosely attached electrons orbiting in the outer most areas/shell of from their nuclei, e.g., contrary to common belief, PURE water is very bad at this, as we all know rubber to be bad ELECTRICAL conductors, as well, i.e., no loosely held out electrons that can jump from one atom to the next thus becoming electrical flow . Whereas water with many types of impurities in it (like almost all water is found (UNLESS very artificially purified), impurities that can carry a charge, i.e., ions, like minerals and salts, water like this is a good conductor, not great, but good...not anywhere near as good as all "heavy" metals, e.g., copper, gold, silver, aluminum, etc., are great ELECTRICAL conductors...i..e., they have the most unstable of outer-most electrons of any materials