Other Free Encyclopedias » 21st Century Webster's Family Encyclopedia » 21st Century Webster's Family Encyclopedia - Bell's palsy to Black Friday


lead low tin metal

Bismuth, chemical element, symbol Bi; for physical constants see Periodic Table. Bismuth was known to the ancients and in early times was confused with tin and lead. It was shown to be distinct from lead in 1753 by Claud J. Geoffroy. Bismuth is sometimes found native, as the minerals bismite and bismuthinite. It is obtained as a byproduct of the refining of lead, copper, and tin. Bismuth is a grayish-white, hard, brittle, low-melting metal. It is the most diamagnetic of all metals and has the highest Hall effect of any metal. It has a low thermal conductivity and a high electrical resistance. Bismuth forms low-melting alloys that are widely used in fire detection and fire extinguishing systems. Bismuth and its compounds are used in powerful magnets and, in medicine, as antisyphilitics and anti-infectives.

Bison [next] [back] Prince Otto von Bismarck

User Comments

Your email address will be altered so spam harvesting bots can't read it easily.
Hide my email completely instead?

Cancel or