Cycle per second
Template:Short description Script error: No such module "about".
Page Module:Infobox/styles.css has no content.
| Cycle per second | |
|---|---|
| Lua error in package.lua at line 80: module 'Module:InfoboxImage/data' not found. 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 |
Page Template:Infobox/styles-images.css has no content.
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]
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
- 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
Page Template:Reflist/styles.css has no content.
- ^ Page Module:Citation/CS1/styles.css has no content.Ewbank, Henry Lee; Lawton, Sherman Paxton (1940). Projects for Radio Speech: A Manual for the Student. New York: Harper & Brothers. p. 151.
- ^ Page Module:Citation/CS1/styles.css has no content.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.
- ^
Page Module:Citation/CS1/styles.css has no content.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 ...
- ^
Page Module:Citation/CS1/styles.css has no content.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.
- ^ Page Module:Citation/CS1/styles.css has no content."Kilocycle, Kilohertz, Megacycle, Megahertz". Google Ngram Viewer. 2020-07-03.
