TIME SIGNATURE n.
ing of a composition or movement, placed after the key signature, to indicate its time or meter. Also called rhythmical signature. It is in the form of a fraction, of which the denominator indicates the kind of note taken as time unit for the beat, and the numerator, the number of these to the measure.…
TORRICELLIAN a.
athematician, who, in 1643, discovered that the rise of a liquid in a tube, as in the barometer, is due to atmospheric pressure. See Barometer. Torricellian tube, a glass tube thirty or more inches in length, open at the lower end and hermetically sealed at the upper, such as is used in the barometer. -- Torricellian…
UNIFILAR a.
se of only one thread, wire, fiber, or the like; as, unifilar suspension. Unifilar magnetometer (Physics), an instrument which consists of a magnetic bar suspended at its center of gravity by a long thread, constituting a delicate means for accurately measuring magnetic intensities, also for determining declinations of…
UNIT n.
t a unit weight through a unit distance against gravitation. See Erg, Foot Pound, Kilogrammeter. -- Unit stress (Mech. Physics), stress per unit of area; intensity of stress. It is expressed in ounces, pounds, tons, etc., per square inch, square foot, or square yard, etc., or in atmospheres, or inches of mercury or wa…