NONCONDUCTOR n.
A substance which does not conduct, that is, convey or transmit, heat, electricity, sound, vibration, or the like, or which transmits them with difficulty; an insulator; as, wool is a nonconductor of heat; glass and dry wood are nonconductors of electricity.
PULLEY n.
A wheel with a broad rim, or grooved rim, for transmitting power from, or imparting power to, the different parts of machinery, or for changing the direction of motion, by means of a belt, cord, rope, or chain.
QUARTER n.
ying numbers. -- Quarter turn, Quarter turn belt (Mach.), an arrangement in which a belt transmits motion between two shafts which are at right angles with each other. -- Quarter watch (Naut.), a subdivision of the full watch (one fourth of the crew) on a man-of- war. -- To give, or show, quarter (Mil.), to accept a…
RADIANT a.
he cluster which has such marginal flowers. Radiant energy (Physics), energy given out or transmitted by radiation, as in the case of light and radiant heat. -- Radiant heat, proceeding in right lines, or directly from the heated body, after the manner of light, in distinction from heat conducted or carried by interve…
REFLEX a.
(Physiol.), any action performed involuntarily in consequence of an impulse or impression transmitted along afferent nerves to a nerve center, from which it is reflected to an efferent nerve, and so calls into action certain muscles, organs, or cells. -- Reflex nerve (Physiol.), an excito-motory nerve. See Exito- moto…