Partial-thickness burns (2nd degree burns)-- affect the top 2 layers of skin. Most notable by blisters (which may develop quickly or take 24 hours to form), but also red, mottled, wet and painful skin. Full-thickness burns (3rd degree burn)-- all three layers of skin affected; leathery, dry, charred, gray.
1 Discoveror: known since ancient times. 2  Place of discovery: not known. 3  Date of discovery: unknown. 4  Origin of name: from the Anglo-Saxon word  gold  (the origin of the symbol Au is the Latin word  aurum  meaning  gold ).
Adorable animal families that will make you aww. Gold is a metallic element with the atomic number 79 and the symbol Au. While the name gold comes from an Old English word meaning yellow, the symbol comes from the Latin aurum, which means âshining dawn.â. specialized use is in the powder called gold tin purple, gold tin precipitate, or purple of Cassius, which is used for tinting enamels and manufacturing a special type of glass called ruby glass. Ruby glass is used on the windows of office buildings as well as on mirrors that are used in space.