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JDer8745 wrote:
snip UNITS: 10-pF capacitor. 10-pF is hypenated when used as a modifier, i. e., adjective. Others: 10-ft pole, 5-cent cigar, 2-dollar pistol, 12-V battery, 500-mile track. 73 de Jack, K9CUN Partly correct. The use of "10-picofarad capacitor" is preferred under the standard rules of English and the NIST style guide. The use of "10-pF capacitor" should be replaced by "10 pF capacitor" according to NIST. See section 7.2 in http://www.physics.nist.gov/Pubs/SP811/contents.html "Even when the value of a quantity is used in an adjectival sense, a space is left between the numerical value and the unit symbol. (This rule recognizes that unit symbols are not like ordinary words or abbreviations but are mathematical entities, and that the value of a quantity should be expressed in a way that is as independent of language as possible.)" "When unit names are spelled out, the normal rules of English apply. Thus, for example, ‘a roll of 35-millimeter film’ is acceptable." 73, Gene W4SZ |
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