Speaker to Spike

Speaker to Spectrum

flexible blade used for mixing small quantities of chemicals, paints, etc.
Speaker. A loudspeaker.
Special. Designed for a particular purpose. Special effect. Any artificial device that aids in producing a variety of illusions on the screen, as of thun­der, lightening.
Specific volume. Volume per units mass; the reciprocal of density.
Spacification. A detailed statement of particulars.
Speccific gravity. (Phys.) The density of weight of a substance; esti­mated relatively. to that of water for solids and liquids, and air for gases

Specific heat. The relative amount of heat required to raise the tempera­ture of a unit mass of different substances one degree compared with the amount of heat required to raise the temperature of the same weight of water one degree.
Specify. To designate so as to distin­guish from other things.
Specimen. A. sample for examination or study.
Specimen bar. (Engin.) A length of bar of any material, especially pre­pared for testing in a testing ma­chine.

Spectral. Pertaining to or produced by a spectrum or spectra.
Spedro bolometer. An' instrument consisting of a spectroscope and a bolometer for determining the stribution of energy in Ii spec­trum.
Spectrogram. A representation or . photograph of a spectrum.
Spectrograph. A spectroscope for photographing or producing a rep­resentation of a spectrum, Spectro heliogram. A photograph of the sun made with a spectrohelio graph.
Spectroheliograph. An instrument for making photographs of the sun with a monochromatic light.
Spectrometer. An optical device for measuring wave length.
Spectrophotometer. A color measur­ing device.
Spectroscope. (Chern.) An instrument for forming and studying spectra. Spectra produced by vaporized substances are useful in the study of their composition.
Spectrum. (Phys.) The band of color which results when sunlight is bro­ken up into its component parts, producing the seven colors of the rainbow.

Speculum metal to Spike
Speculum metal. (Metal.) A hard brittle alloy of two parts copper ~nd one part tin. It takes and re­tains a high polish and is therefore much used for reflectors.
Speed. Rapidity in moving; the sen­sitivity of a film or paper to light; the length of time a shutter is opened to expose film; the largest opening at which a lens can be used.
Speed" control. (Tel.) Controls on a television receiver, sometimes called the hold controls, which can be regulated to hold the received picture in horizontal and' vertical synchronization. (Atuo.) A gover­nor.
Speed-indicating venturi. (Aero.) A venturi tube may be combined with a pitot tube or with a tube giving static pressure to form a pressure nozzle which may be used to determine the indicated speed of an aircraft fhrough the air. The pressure difference is measured by a sutitable gauge.
Speed indicator. (Engin.) A term applied to any of the many devices for recording speed, as a speedo­meter on an automobile. A small mechanism for recording the r.p.m. of shafts; also the elaborate tachometer which makes an auto­graphic diagram.
Speed lathe. (Mach.) A metal­worker's lathe, not equipped with mechanical feed. Speed light. An electronic flash lamp.
Speedometer (Auto.) An instrument for recording distance travelled and the rate of speed in miles per hour. Usually mounted in such a position as to be clearly visible by the car operator.
Spelter. (Metal.) The commercial name for zinc ingots; also an alloy of zinc and copper in equal parts.
Sphalerite. (Mineral.) The most im­portant ore of zinc.
Sphere. (Geom.) A solid having ev­ery part of its surface equally dis­tant from its center. Area = diam­eter squared x 3.1416. Volume = diameter cubed x 0.5236. Spherical. Having the form of a sphere; globular.
Spherical aberration. Variation in focal length of a lens of mirror from centre to edge, due to its spherical shape.
Spheroidizing. Alloys with iron base are given an extended heating at a temperature a little less than the critical temperature range and then slowly cooled.
Spider gears. (Auto.) The two, three, or four gears (as the case may be) fitted free running on the spider, by means of w~ich the differential action is obtained in the rear axle.
Spigeleisen. (Chern.) A hard, white cast iron containing a high per­centage of carbon and of managanese. When the percent­age of managanese exceeds 15 to 20 per cent, it is known as ferromanganese.
Spigot. (Plumb.) The end of a pipe which fits into a bell. Also a word used synonymously with faucet.
Spike. (Bldg.) A large nail, but thicker