Car"bon process. (Photog.) A printing process depending on the effect of light on bichromatized gelatin. Paper coated with a mixture of the gelatin and a pigment is called carbon paper or carbon tissue. This is exposed under a negative and the film is transferred from the paper to some other support and developed by washing (the unexposed portions being dissolved away). If the process stops here it is called single transfer; if the image is afterward transferred in order to give an unreversed print, the method is called double transfer.
Carbon steel. Steel deriving its qualities from carbon chiefly, without the presence of other alloying elements; -- opposed to alloy steel.
Carbon transmitter. A telephone transmitter in which a carbon contact is used.
Car`bo*run"dum (?), [Carbon + corundum.] A beautiful crystalline compound, SiC, consisting of carbon and silicon in combination; carbon silicide. It is made by heating carbon and sand together in an electric furnace. The commercial article is dark-colored and iridescent. It is harder than emery, and is used as an abrasive.
{ Carborundum cloth or paper }. Cloth or paper covered with powdered carborundum.
{ Car"bu*ret`or, Car"bu*ret`tor (?) }, n. One that carburets; specif., an apparatus in which air or gas is carbureted, as by passing it through a light petroleum oil. The carburetor for a gasoline engine is usually either a surface carburetor, or a float, float- feed, or spray, carburetor. In the former air is charged by being passed over the surface of gasoline. In the latter a fine spray of gasoline is drawn from an atomizing nozzle by a current of air induced by the suction of the engine piston, the supply of gasoline being regulated by a float which actuates a needle valve controlling the outlet of the feed pipe. Alcohol and other volatile inflammable liquids may be used instead of gasoline.
Car"cel (?), n. (Photom.) A light standard much used in France, being the light from a Carcel lamp of stated size and construction consuming 42 grams of colza oil per hour with a flame 40 millimeters in height. Its illuminating power is variously stated at from 8.9 to 9.6 British standard candles.
Car"di*o*gram` (?), n. [Gr. &?; heart + -gram.] (Physiol.) The curve or tracing made by a cardiograph.
Car`di*og"ra*phy (?), n. 1. Description of the heart.