Norman, 1894–1978, U.S. illustrator.
a male given name.
Norman. 1894–1978, US illustrator, noted esp for magazine covers


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  • Rockwell hardness

    noun See Rockwell scale

  • Rockwell-number

    noun, Metallurgy. 1. a numerical expression of the hardness of a metal as determined by a test (Rockwell test) made by indenting a test piece with a Brale, or with a steel ball of specific diameter, under two successive loads and measuring the resulting permanent indentation.

  • Rockwell protocol interface

    (RPI) A cost-cutting feature of some modems allowing data compression and error correction (e.g. ITU-T V.42bis, V.42) to be provided in software instead of hardware. Usually an RPI modem comes with RPI-aware software (e.g. the low-end RPI models of Supra come with the COMit which supports RPI, providing MNP 2,4,5,7, V.42 and V.42bis). RPI is […]

  • Rockwell scale

    noun a measurement system used by commercial manufacturers to determine the relative hardness of objects based on the depth of indentation from a heavy object; also Rockwell hardness Examples Each Rockwell scale is an arbitrarily defined range of numbers from 0 to 100 covering a specific range of material hardness. Many knife manufacturers indicate the […]

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