The Mach number is commonly used both with objects travelling at high speed in a fluid, and with high-speed fluid flows inside channels such as nozzles, diffusers or wind tunnels.
It was now nearly the hour of high tide, but the waves were so great that in their troughs the shallows of the shore were almost visible, and the schooner, with all sails set, was rushing with such speed that, in the words of one old salt, she must fetch up somewhere, if it was only in hell.
The speed of communications is wondrous to behold. It is also true that speed can multiply the distribution of information that we know to be untrue. Edward R. Murrow
You can't work in the movies. Movies are all about lighting. Very few filmmakers will concentrate on the story. You get very little rehearsal time, so anything you do onscreen is a kind of speed painting. John Malkovich
When you're doing a play you get to go full speed ahead, all night, in front of an audience. It's a roller-coaster ride, responding to other actors, it feeds you. Sean Patrick Thomas
We must speed up the deployment of broadband in order to bring high-speed data services to homes and businesses. The spread of information technology has contributed to a steady growth in U.S. productivity. Michael Oxley
When I test I never go right to the limit. Only because when you are below the limit you can go at the same speed all day, and that's the only way you can be absolutely sure about what you are testing. Alain Prost
