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).
The field for international matches is in the range of 110-120 yards long and 70-80 yards wide. The length must always be greater than the width. American football has 11 players per side. The field is 120 yards long (100 yards of playing field with two 10 yard end zones) and 53 1/3 yards wide.