Laboratory centrifuge. A laboratory centrifuge is a piece of laboratory equipment, driven by a motor, which spins liquid samples at high speed. There are various types of centrifuges, depending on the size and the sample capacity.
In American football, each team is allowed 11 men on the field during a play, for a total of 22 players plus the officials.  If there are more than 11 players on the field foâ¦r a play, the team with too many players may be assessed a 5-yard penalty and any play that occurred may be nullified (at the discretion of the opposing team).
American football, American football game-a game played by two teams of 11 players on a rectangular field 100 yards long; teams try to get possession of the ball and advance it across the opponents goal line in a series of (running or passing) plays. football play - (American football) a play by the offensive team.