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microphone

(Encyclopedia)microphone, device for converting sound into electrical energy, used in radio broadcasting, recording, and sound amplifying systems. Its basic component is a diaphragm that responds to the pressure or...

Nasheed, Mohamed

(Encyclopedia)Nasheed, Mohamed mōhäˈmĕd näshēdˈ [key], 1967–, Maldivian political leader. A journalist, he often ran afoul of President Maumoon Abdul Gayoom and was imprisoned several times. “Anni” was...

imagists

(Encyclopedia)imagists, group of English and American poets writing from 1909 to about 1917, who were united by their revolt against the exuberant imagery and diffuse sentimentality of 19th-century poetry. Influenc...

naval architecture

(Encyclopedia)naval architecture, science of designing ships. A naval architect must consider especially the following factors: floatability, i.e., the ability of the ship to remain afloat while meeting the require...

thermometer

(Encyclopedia)thermometer, instrument for measuring temperature. Galileo and Sanctorius devised thermometers consisting essentially of a bulb with a tubular projection, the open end of which was immersed in a liqui...

thyroxine

(Encyclopedia)thyroxine thīrŏkˈsēn [key], substance secreted by the thyroid gland. The hormone thyroxine forms by combining the amino acid tyrosine with iodine. Complexed to a protein, it is stored in the folli...

scopolamine

(Encyclopedia)scopolamine hīˈəsēnˌ, –sĭn [key], alkaloid drug obtained from plants of the nightshade family (Solanaceae), chiefly from henbane, Hyoscyamus niger. Structurally similar to the nerve substance ...

shock absorber

(Encyclopedia)shock absorber, device for reducing the effect of a sudden shock by the dissipation of the shock's energy. On an automobile, springs and shock absorbers are mounted between the wheels and the frame. W...

Creeley, Robert

(Encyclopedia)Creeley, Robert, 1926–2005, American poet, b. Arlington, Mass. He lived in Asia, Europe, and Latin America and taught at various universities in the United States. With Charles Olson, he was a leadi...

Clarendon, Constitutions of

(Encyclopedia)Clarendon, Constitutions of, 1164, articles issued by King Henry II of England at the Council of Clarendon defining the customs governing relations between church and state. In the anarchic conditions...