Dynamics are used extensively for vocals, drums, and 'micing up' amplifiers such as guitar amps but they can be used for almost any application.

The police closed off the street while they investigated the murder scene.

It ranged from the pre-design development of essential components, through the stage of type test and flight test and debugging right through to later development of the engine to higher powers and efficiency.

Then on the verdrous Bank, where Spices rose, Rowl on the balmy Grass, or smiling play With her young Cade, her caded Lamb with Smiles Answer'd her Love, and lickt her dainty hand.