Search the Dictionary

One who accounts for material phenomena by a theory of dynamics. Those who would resolve matter into centers of force may be said to constitute the school of dynamists. Ward (Dyn. Sociol. ).

The act of setting free the dynamic powers of a medicine, as by shaking the bottle containing it.

oof of the real existence of such a thing as instinct must necessarily be fatal. Word (Dynamic Sociology).

y electricity, producing or employing electricity, etc.; as, electro-negative; electro-dynamic; electro- magnet.

An instrument for measuring the strength of electro-dynamic currents.

. If a small amount, h, of heat enters the body when its temperature is t in the thermodynamic scale the entropy of the body is increased by h . The entropy is regarded as measured from some standard temperature and pressure. Sometimes called the thermodynamic function. The entropy of the universe tends towards a maxim…

A genus of vascular, cryptogamic, herbaceous plants; -- also called horsetails.

es, or influences which contribute to produce a result; a constituent. The materal and dynamical factors of nutrition. H. Spencer.

se, pertaining to, or derived from, formic acid; as, formic ether. Amido formic acid, carbamic acid. -- Formic acid, a colorless, mobile liquid, HCO.OH, of a sharp, acid taste, occurring naturally in ants, nettles, pine needles, etc., and produced artifically in many ways, as by the oxidation of methyl alcohol, by the…

Appropriate to, or implying, friendship; befitting friends; amicable. In friendly relations with his moderate opponents. Macaulay.

rbitrary. -- Calculus of functions. See under Calculus. -- Carnot's function (Thermo-dynamics), a relation between the amount of heat given off by a source of heat, and the work which can be done by it. It is approximately equal to the mechanical equivalent of the thermal unit divided by the number expressing the tem…

Electricity excited by the mutual action of certain liquids and metals; dynamical electricity.

methods by which its structure, features, changes, and conditions have been produced; dynamical geology. See Chart of The Geological Series.

A rotating wheel, mounted in a ring or rings, for illustrating the dynamics of rotating bodies, the composition of rotations, etc. It was devised by Professor W. R. Johnson, in 1832, by whom it was called the rotascope.

ached a thin flange of metal for supporting the instrument. It is used in studying the dynamics of rotating bodies.

Same as Hemadynamics.

atomic heat of all solid elements is nearly a constant, the mean value being 6.4. -- Dynamical theory of heat, that theory of heat which assumes it to be, not a peculiar kind of matter, but a peculiar motion of the ultimate particles of matter. Heat engine, any apparatus by which a heated substance, as a heated fluid…

also sidewinder. -- Horned ray (Zoöl.), the sea devil. -- Horned screamer (Zoöl.), the kamichi. -- Horned snake (Zoöl.), the cerastes. -- Horned toad (Zoöl.), any lizard of the genus Phrynosoma, of which nine or ten species are known. These lizards have several hornlike spines on the head, and a broad, flat body, c…

e, crystalline, nitrogenous hydrocarbon, C9H9NO, obtained from certain derivatives of cinnamic acid and closely related to quinoline and carbostyril.

ed in forming the names of certain sciences, systems, etc., as acoustics, mathematics, dynamics, statistics, politics, athletics.