The pressure equivalent of the velocity of a fluid.
Dynamic load
Any moving load on a roof such as people and equipment. Wind can also be considered a Dynamic Load.
Dynamic pressure
The pressure when the water is flowing.
Dynamo
A machine for converting mechanical energy into electrical energy by magneto-electric induction; may be used as a motor.
Dynamoelectric
Having to do with the production of electrical energy from mechanical energy, or of mechanical energy from electrical energy.
Dynamometer
An apparatus for measuring force or power, especially the power developed by a motor.
Dyne
The absolute centimeter-gram-second unit of force; that force that will impart to a free mass of one gram an acceleration of one centimeter per second per second.
