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

hes. 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 ma…

A device for measuring, or an instrument for indicating, energy expended or work done; a dynamometer. -- Er`go*met"ric (#), a.

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

A gelatin dynamite in which the dope is composed largely of sodium nitrate.

r Arbitrary. -- 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…

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

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

A kind of dynamo-electric machine; -- so named from its French inventor, M. Gramme. Knight.

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.

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

Same as Hemadynamometer.

Same as Hemadynamometer.

Same as Hemadynamometer.

The 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 fl…

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

l or magnetic force or condition from one body on another without actual contact. Electro-dynamic induction, the action by which a variable or interrupted current of electricity excites another current in a neighboring conductor forming a closed circuit. -- Electro-magnetic induction, the influence by which an electri…

roscopic plants called diatoms. It is used in polishing powder, and in the manufacture of dynamite.

y a water jacket (water-cooled) or by air currents (air cooled) to give the maximum thermodynamic efficiency and to avoid excessive friction or seizing.

A line upon a thermodynamic diagram so drawn as to represent the pressures corresponding to changes of temperature when the volume of the gas operated on is constant. -- I`so*chor"ic (#), a.