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Differential   /dˌɪfərˈɛnʃəl/  /dˌɪfərˈɛntʃəl/   Listen
Differential

adjective
1.
Relating to or showing a difference.
2.
Involving or containing one or more derivatives.
noun
1.
The result of mathematical differentiation; the instantaneous change of one quantity relative to another; df(x)/dx.  Synonyms: derivative, derived function, differential coefficient, first derivative.
2.
A quality that differentiates between similar things.
3.
A bevel gear that permits rotation of two shafts at different speeds; used on the rear axle of automobiles to allow wheels to rotate at different speeds on curves.  Synonym: differential gear.



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"Differential" Quotes from Famous Books



... must differ from Integralds/V by terms not depending on the path—that is, by terms involving only the beginning and end of it. In the case of the free aether V is constant; thus, if we neglect squares like (u/V)2, the condition is that udx vdy wdz be the exact differential of some function f. If this relation is true along all paths, the velocity of the aether must be of irrotational type, like that of frictionless fluid. Moreover, this is precisely the condition for the absence of interference ...
— Project Gutenberg Encyclopedia
... was no longer rated as a ship in ballast, but charged on the higher scale. Vessels were therefore forced to enter the port entirely devoid of cargo, or carrying sufficient to cover the expense of the increased harbor dues; almost an impossibility for foreign ships, on account of the differential customs rates, which acted almost as a complete prohibition. The result was that foreign vessels came there only in ballast, or when ...
— The Former Philippines thru Foreign Eyes • Fedor Jagor; Tomas de Comyn; Chas. Wilkes; Rudolf Virchow.
... Differential rates are recognized to be legitimate. Railroads are allowed to charge a less rate for wheat intended for export than that intended for local consumption. There has sometimes been a wide difference between the freight rate on wheat between ...
— The Young Farmer: Some Things He Should Know • Thomas Forsyth Hunt
... support, What we should have to show, therefore, in order to justify the inference of a deterioration due to this process, would be, not that it simply increased the number of the candidates for living, but that it gave to the feebler candidates a differential advantage; that they are now more fitted than they were before for ousting their superior neighbours from the chances of support. But I can see no reason for supposing such a consequence to be probable or even possible. The struggle ...
— Social Rights and Duties, Volume I (of 2) - Addresses to Ethical Societies • Sir Leslie Stephen
... she would as soon have wrestled with the differential calculus. "Why, dear me," she stammered, "there's Alice; she never came out, and I don't see but what she's got along all right: good home, nice husband, and everything ...
— With the Procession • Henry B. Fuller


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