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s (kinematics) and the action of forces in producing or changing their motion (kinetics). Dynamics is held by some recent writers to include statics and not kinematics.

The science which treats of the air and other gaseous bodies under the action of force, and of their mechanical effects.

The doctrine of vital forces or energy.

The phenomena of electricity in motion.

Same as Hemadynamics.

Same as Hemadynamics.

The principles of dynamics in their application to the blood; that part of science which treats of the motion of the blood.

ether as investigated mathematically, or by observation and experiment; the principles of dynamics, as applied to water and other fluids.

The department of physiology which deals with the principles of muscular contraction; the exercise of muscular force or contraction.

That branch of pharmacology which considers the mode of action, and the effects, of medicines. Dunglison.

The relation of light to the movements of plants and their organs; the study of the phenomena of curvatures induced by the stimulus of light. --Pho`to*dy*nam"ic (#), Pho`to*dy*nam"ic*al (#), a.

The science which treats of the mechanical action or relations of heat.

The science of equilibrium and motion of air or an aëriform fluid, including aërodynamics and aërostatics.

Of or pertaining to biodynamics, or the doctrine of vital forces or energy.

Of or pertaining to dynamics; belonging to energy or power; characterized by energy or production of force. Science, as well as history, has its past to show, -- a past indeed, much larger; but its immensity is dynamic, not divine. J. Martineau. The vowel is produced by phonetic, not by dynamic, causes. J. Peile.…

In accordance with the principles of dynamics or moving forces. J. Peile.

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. ).

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…

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.