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An instrument for measuring the intensity of the photogenic (light-producing) rays, and computing the power of object glasses.

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.…

f mechanics which treats of the motion of bodies (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.

Pertaining to the development of electricity, especially electrical currents, by power; producing electricity or electrical currents by mechanical power.

A difficulty in producing vocal sounds; enfeebled or depraved voice.

A boiling or bubbling up of a liquid; the motion produced in a liquid by its rapid conversion into vapor.

An alkaloid constituting the active principle of ergot; -- so named from its power of producing abortion.

constructed that the work held by it may be altered as to its center of motion, so as to produce combinations of eccentric combinations of eccentric circles. -- Eccentric gear. (Mach.) (a) The whole apparatus, strap, and other parts, by which the motion of an eccentric is transmitted, as in the steam engine. (b) A co…

To discolor by the production of an ecchymosis, or effusion of blood, beneath the skin; -- chiefly used in the passive form; as, the parts were much ecchymosed.

A livid or black and blue spot, produced by the extravasation or effusion of blood into the areolar tissue from a contusion.

her mossy couch. Milton. Echo organ (Mus.), a set organ pipes inclosed in a box so as to produce a soft, distant effect; -- generally superseded by the swell. -- Echo stop (Mus.), a stop upon a harpsichord contrived for producing the soft effect of distant sound. -- To applaud to the echo, to give loud and continuou…

The art of constructing vaults to produce echoes.

An instrument for intensifying sounds produced by percussion of the thorax. Knight.

ment and management of the internal affairs of a state or of any establishment kept up by production and consumption; esp., such management as directly concerns wealth; as, political economy.

the knife in many operations, the parts operated on being severed by the crushing effect produced by the gradual tightening of a steel chain, so that hemorrhage rarely follows.

Copied, reproduced as a molding or cast, in contradistinction from the original model.

A method of etching in which the design upon the plate is produced in relief.

To bring or draw out; to cause to appear; to produce against counter agency or influence; to extract; to evolve; as, to educe a form from matter. The eternal art educing good from ill. Pope. They want to educe and cultivate what is best and noblest in themselves. M. Arnold.

A European fish (Zoarces viviparus), remarkable for producing living young; -- called also greenbone, guffer, bard, and Maroona eel. Also, an American species (Z. anguillaris), -- called also mutton fish, and, erroneously, congo eel, ling, and lamper eel. Both are edible, but of little value.

In general: That which is produced by an agent or cause; the event which follows immediately from an antecedent, called the cause; result; consequence; outcome; fruit; as, the effect of luxury. The effect is the unfailing index of the amount of the cause. Whewell.