rapidity

IPA: rʌpˈɪdʌti

speed, swiftness; the condition of being rapid
(physics) A measure of velocity relative to the speed of light
(physics) A measure of the velocity of a particle in a beam relative to the beam's axis

Examples of "rapidity" in Sentences

Speed is the rapidity of movement.
The rapidity of light is infinite.
The section discussing rapidity is obscure.
For most, this rapidity is a problem, or an excuse.
But this rapidity is not important for the final distribution.
Flying with rapidity from the hills of Media to the marshes of the
Here, however, the sale is increased in rapidity more than a third.
I am glad to think that Canada has recovered with so much rapidity from the effects of war.
In the series of dactylic lines 17-22, Catullus no doubt intended to convey the idea of rapidity, as, in the spondaic line immediately following, of labour.
The frequency of the waves, the rapidity, that is, with which wave follows wave, depends on the size and proximity of the plates and on the length and form of the coil which connects them.
+ While the Byzantine Empire was at its zenith, the new faith of Islam was conquering Western Asia and the Mediterranean lands with a fiery rapidity, which is one of the marvels of history.