Great question! 1) Molecules and atoms are held together by electronic attraction - electromagnetism. It is usually considered under the heading of chemical bonding, which is explained by electromagnetic interaction. Electrons are held in their orbits about the nucleus of an atom by the same electromagnetic force.
The surname of Barnes is said to have three possible origins of the surname. The first possible origin of the surname of Barnes is of the Anglo-Saxon variety, and is a topographical surname, or possibly even an occupational surname.
Last name: Marsh. This interesting surname, of Anglo-Saxon origin, is a topographical name for someone who lived by or in a marsh or fen, deriving from the Olde English pre 7th Century mersc meaning marsh. The surname dates back to the late 12th Century (see below).