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 ).
Radium is a chemical element with symbol Ra and atomic number 88. It is the sixth element in group 2 of the periodic table, also known as the alkaline earth metals.adium is a chemical element with symbol Ra and atomic number 88. It is the sixth element in group 2 of the periodic table, also known as the alkaline earth metals.