b. The read/write heads move inward to the next cylinder once the first cylinder is filled. Phonograph cylinders are the earliest commercial medium for recording and reproducing sound.Commonly known simply as "records" in their era of greatest popularity (c. 1896–1915), these hollow cylindrical objects have an audio recording engraved on the outside surface, which can be reproduced when they are played on a mechanical cylinder phonograph. 3. All tracks are the same distance from the center of the disk. The act of projecting or the condition of being projected. tion (prə-jĕk′shən) n. 1. The output of the steam turbine was 16,000 horsepower (12,000 kW). Each side or surface of one disk is called a head, with each one divided into sectors and tracks. Collectively they comprise one cylinder. Titanic was equipped with three main engines—two reciprocating four-cylinder, triple-expansion steam engines and one centrally placed low-pressure Parsons turbine—each driving a propeller.The two reciprocating engines had a combined output of 30,000 horsepower (22,000 kW). Honing is primarily used to improve the geometric form of a surface, but can also improve the surface finish.. See more. Honing is an abrasive machining process that produces a precision surface on a metal workpiece by scrubbing an abrasive grinding stone or grinding wheel against it along a controlled path. Data is written to a disk starting at the furthest track. Squash definition, to press into a flat mass or pulp; crush: She squashed the flower under her heel. A thing or part that extends outward beyond a prevailing line or surface: spiky projections on top of a fence; a projection of land along the coast. 2. To work or succeed in a sustained way; gain momentum: The political campaign finally began to roll.
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