This article is about the unit of frequency. For the unit used to measure ionizing radiation, see counts per minute.
The cycle per second is a once-common English name for the unit of frequency now known as the hertz (Hz). Cycles per second may be denoted by c.p.s., c/s, or, ambiguously, just "cycles" (Cyc., Cy., C, or c). The term comes from repetitive phenomena such as sound waves having a frequency measurable as a number of oscillations, or cycles, per second.[1]
Cycle per second
A 1 MHz military-grade crystal resonator with an octal base, marked "1000 KC" for 1000 kilocycles per second.
General information
Unit of
Frequency, rotational frequency
Symbol
cps, c/s
Conversions
1 cps in ...
... is equal to ...
SI units
1 Hz=1 s−1
With the organization of the International System of Units in 1960, the cycle per second was officially replaced by the hertz, or reciprocal second, "s−1" or "1/s". Symbolically, "cycle per second" units are "cycle/second", while hertz is "Hz" or "s−1".[2] For higher frequencies, kilocycles (kc), as an abbreviation of kilocycles per second were often used on components or devices. Other higher units like megacycle (Mc) and less commonly kilomegacycle (kMc) were used before 1960[3] and in some later documents.[4] These have modern equivalents such as kilohertz (kHz), megahertz (MHz), and gigahertz (GHz). Following the introduction of the SI standard, use of these terms began to fall off in favor of the new unit, with hertz becoming the dominant convention in both academic and colloquial speech by the 1970s.[5]
Cycle can also be a unit for measuring usage of reciprocating machines, especially presses, in which cases cycle refers to one complete revolution of the mechanism being measured (i.e. the shaft of a reciprocating engine).
Derived units include cycles per day (cpd) and cycles per year (cpy).
See alsoedit
Crystal resonators, the 1940s-era center unit is marked in kc.
^Ewbank, Henry Lee; Lawton, Sherman Paxton (1940). Projects for Radio Speech: A Manual for the Student. New York: Harper & Brothers. p. 151.
^Taylor, Barry N.; Thompson, Ambler, eds. (2008). International System of Units (SI)(PDF). Special Publication. Vol. 330 (2008 ed.). Gaithersburg, MD: National Institute of Standards and Technology. p. 27. Retrieved 2019-09-02.
^Grammer, George (January 1933). "Rationalizing the Autodyne". QST. XVII (1). West Hartford, CN: American Radio Relay, Inc.: 11. Retrieved 2019-09-02. The 7000- and 14,000-kc. grid coils are wound with No. 18 enameled wire ...
^Guentzler, Ronald E. (April 1967). "The "Monode" Noise Generator". QST. LI (2). West Hartford, CN: American Radio Relay, Inc.: 30. Retrieved 2019-09-02. The Monode described here is usable at frequencies below 144 Mc. with slight modification.
^"Kilocycle, Kilohertz, Megacycle, Megahertz". Google Ngram Viewer. 2020-07-03.
January 01, 1970
cycle, second, this, article, about, unit, frequency, unit, used, measure, ionizing, radiation, counts, minute, cycle, second, once, common, english, name, unit, frequency, known, hertz, cycles, second, denoted, ambiguously, just, cycles, term, comes, from, re. This article is about the unit of frequency For the unit used to measure ionizing radiation see counts per minute The cycle per second is a once common English name for the unit of frequency now known as the hertz Hz Cycles per second may be denoted by c p s c s or ambiguously just cycles Cyc Cy C or c The term comes from repetitive phenomena such as sound waves having a frequency measurable as a number of oscillations or cycles per second 1 Cycle per secondA 1 MHz military grade crystal resonator with an octal base marked 1000 KC for 1000 kilocycles per second General informationUnit ofFrequency rotational frequencySymbolcps c sConversions1 cps in is equal to SI units 1 Hz 1 s 1 With the organization of the International System of Units in 1960 the cycle per second was officially replaced by the hertz or reciprocal second s 1 or 1 s Symbolically cycle per second units are cycle second while hertz is Hz or s 1 2 For higher frequencies kilocycles kc as an abbreviation of kilocycles per second were often used on components or devices Other higher units like megacycle Mc and less commonly kilomegacycle kMc were used before 1960 3 and in some later documents 4 These have modern equivalents such as kilohertz kHz megahertz MHz and gigahertz GHz Following the introduction of the SI standard use of these terms began to fall off in favor of the new unit with hertz becoming the dominant convention in both academic and colloquial speech by the 1970s 5 Cycle can also be a unit for measuring usage of reciprocating machines especially presses in which cases cycle refers to one complete revolution of the mechanism being measured i e the shaft of a reciprocating engine Derived units include cycles per day cpd and cycles per year cpy See also edit nbsp Crystal resonators the 1940s era center unit is marked in kc Cycles per instruction CPI Cycles per metre Heinrich Hertz Instructions per cycle IPC Instructions per second IPS MKS system of units a predecessor of the SI set of units Normalized frequency Radian per second Revolutions per minute RPM Turn angle References edit Ewbank Henry Lee Lawton Sherman Paxton 1940 Projects for Radio Speech A Manual for the Student New York Harper amp Brothers p 151 Taylor Barry N Thompson Ambler eds 2008 International System of Units SI PDF Special Publication Vol 330 2008 ed Gaithersburg MD National Institute of Standards and Technology p 27 Retrieved 2019 09 02 Grammer George January 1933 Rationalizing the Autodyne QST XVII 1 West Hartford CN American Radio Relay Inc 11 Retrieved 2019 09 02 The 7000 and 14 000 kc grid coils are wound with No 18 enameled wire Guentzler Ronald E April 1967 The Monode Noise Generator QST LI 2 West Hartford CN American Radio Relay Inc 30 Retrieved 2019 09 02 The Monode described here is usable at frequencies below 144 Mc with slight modification Kilocycle Kilohertz Megacycle Megahertz Google Ngram Viewer 2020 07 03 Retrieved from https en wikipedia org w index php title Cycle per second amp oldid 1202009464, wikipedia, wiki, book, books, library,
