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Topic: Neper

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	Neper - Wikipedia, the free encyclopedia
		A neper (Symbol: Np) is a unit of ratio.
		The neper is often used to express voltage and current ratios, whereas the decibel was used in early times to express power ratios.
		Neper is used more with voltage ratios (linear field strength) than with power ratios (squared power strength).
	en.wikipedia.org /wiki/Neper (203 words)

	TCAEP.co.uk :: Science-Equation-Neper
		The neper is used for the expression of the ratio of two currents, voltages or analogous quantities.
		In this case, the number of nepers is equal to the logarithm of the ratio.
		The decineper, equal to one-tenth of a neper, is often used.
	www.scenta.co.uk /tcaep/nonxml/science/equations/print/pNeper.htm (79 words)

	Neper (mythology) - Wikipedia, the free encyclopedia
		In Egyptian mythology, Neper (also spelt Nepra) was an androgenous deification (the feminine form of his name is Nepit) of grain, a valuable commodity in ancient Egypt, which faced starvation without it.
		Naturally, as lord of the mouth, Neper's mother was identified as Renenutet, who gave out the Ren, a person's true name, and who was also identified as source of nourishment.
		Once the myth of the Legend of Osiris and Isis had begun to be told, since Osiris was now a life-death-rebirth deity, in common with many cultures, his story was associated with the annual harvest, and the annual disappearance of any visible life in the crop.
	en.wikipedia.org /wiki/Nepit (244 words)

	What's a Neper? - Microwave Encyclopedia - Microwaves101.com
		The Neper (Np) is similar to the decibel (dB).
		The Neper uses the natural logarithm, and is named after Microwave Hall-of-Famer John Napier.
		Nepers are typically used in loss calculations in the attenuation constant of the propagation constant:
	www.microwaves101.com /encyclopedia/neper.cfm (116 words)

	Station Information - Neper
		In telecommunication, a neper (Np) is a unit used to express ratios, such as gain, loss, and relative values.
		The neper is often used to express voltage and current ratios, whereas the decibel is usually used to express power ratios.
		In Egyptian mythology, Neper was a god of grain, especially barley and emmer wheat.
	www.stationinformation.com /encyclopedia/n/ne/neper.html (157 words)

	Encyclopedia: Neper (Site not responding. Last check: 2007-10-08)
		For Neper as a unit of measure, see Neper In Egyptian mythology, Neper was a god of grain, especially barley and emmer wheat.
		The value of a ratio in nepers, Np, is given by The decibel (dB) is a measure of the ratio between two quantities, and is used in a wide variety of measurements in acoustics, physics and electronics.
		In the physical sciences, a dimensionless number (or more precisely, a number with the dimensions of 1) is a quantity which describes a certain physical system and which is a pure number without any physical units; it does not change if one alters ones system of units of measurement...
	www.nationmaster.com /encyclopedia/Neper (713 words)

	Definition: neper (Site not responding. Last check: 2007-10-08)
		neper (Np): A unit used to express ratios, such as gain, loss, and relative values.
		Note 1: The neper is analogous to the decibel, except that the Naperian base 2.718281828.
		Note 4: The neper is often used to express voltage and current ratios, whereas the decibel is usually used to express power ratios.
	www.atis.org /tg2k/_neper.html (152 words)

	Neper - TheBestLinks.com - Current (electricity), Decibel, E (mathematical constant), International Telecommunication ... (Site not responding. Last check: 2007-10-08)
		Neper, Current (electricity), Decibel, E (mathematical constant), International...
		In telecommunication, a neper (Np) is a non-SI unit, accepted for use with SI, used to express ratios, such as gain, loss, and relative values.
		Like the bel it is a unit in a logarithmic scale, the difference being that where the bel uses base-10 logarithms to compute ratios, the neper uses base e (2.71828182846...).
	www.thebestlinks.com /Neper.html (220 words)

	Origin and Meaning of the Name Neper
		Search for names similar to Neper starting with Ne-, Nep- or ending with -er, -per.
		Neper is an uncommon male first name as it was not ranked for males of all ages in the 1990 U.S. Census.
		Neper is an uncommon surname as it was not ranked for people of all ages in the 1990 U.S. Census.
	www.thinkbabynames.com /meaning/1/Neper (92 words)

	NEPER (Site not responding. Last check: 2007-10-08)
		"NEPER" is a common misspelling or typo for: leper, nape, napery, never, nipper, nippers.
		1 neper is equal to 8.686 decibels.Under certain conditions the neper is a measure of the ratio of amplitudes of such physical quantities as voltage, current, particle velocities, and sound pressure.
		The neper is not commonly used in English-speaking countries.Abbreviation n.
	www.websters-online-dictionary.org /ne/neper.html (441 words)

	neper (Site not responding. Last check: 2007-10-08)
		The neper is the natural logarithm of the power ratio.
		The decibel, however, became popular in Britain and America and is based on log to the base ten, while the neper was used in continental Europe and the base of its logarithm was e.
		The neper is named for John Napier (1550–1617), the Scottish mathematician who invented logarithms to the base e.
	www.sizes.com /units/neper.htm (125 words)

	Hitchhiker's Guide to Rukl Chart III (Site not responding. Last check: 2007-10-08)
		But the truly remarkable aspect of Neper is the terracing of the inside wall -- if you want to hunt "edge on" craters, this is a prime specimen.
		Neper was located on the south edge of Mare Marginis and had light colored mountains in the middle of it.
		Goddard was a dark oval at the north edge of the Mare.
	www.shallowsky.com /moon/ruklIII.html (177 words)

	[No title] (Site not responding. Last check: 2007-10-08)
		% This exponential has a % % neper frequency: sigma = -a % time constant: tau = 1/a % settling time: t_s = 5 tau % % As a is made more positive, the time constant decreases, the settling time decreases, % and the exponential decays to zero more rapidly.
		% This exponential has a % % neper frequency: sigma = -a % % As a is made more positive, the exponential grows toward infinity more rapidly.
		% This exponential sinusoid has a % % neper frequency: sigma = a % frequency of oscillation: w % period of oscillation: T = 2 pi/w % cyclic frequency: f = 1/T % % As a is made more positive, the exponential sinusoid grows more rapidly toward infinity.
	www.eas.asu.edu /~aar/classes/eee480S99/macros/EXPSIGNAL/realexp.m (266 words)

	NEPER (Site not responding. Last check: 2007-10-08)
		In telecommunication, a neper is a non-SI unit, accepted for use with SI, used to express ratios, such as gain, loss, and relative values.
		Like the decibel it is a unit in a logarithmic scale, the difference being that where the bel uses base-10 logarithms to compute ratios, the neper uses base e.
		It is licensed under the GNU free documentation license.
	www.yotor.org /wiki/en/ne/Neper.htm (168 words)

	Astronomy Notes: Neper and vicinity
		The terminator shows at 84 degrees east tonight illuminating the central peak in Neper.
		Neper appears as a long thin oval (141 kms) with steep walls and a tall central mountain.
		The walls and the peak are in light and the floor is fl with shadow.
	www.chriscorrigan.com /astro/2004/08/neper-and-vicinity.html (88 words)

	Nepers, bels, and dB (Site not responding. Last check: 2007-10-08)
		The other likely candidate for the base of the log is e (=2.71828...), which has nice properties in equations, etc., and just seems to fall out of all sorts of natural phenomena (unlike 10, which is popular because we have 10 fingers).
		Neper is a form of Napier, the guy who popularized the use of logs for computation (viz.
		Nepers are used with voltage (or magnitude) ratios, so watch out when converting back and forth between Nepers and dB.
	home.earthlink.net /~jimlux/radio/neper.htm (365 words)

	BIPM - Table 6
		(f) The neper is used to express values of such logarithmic quantities as field level, power level, sound pressure level, and logarithmic decrement.
		Natural logarithms are used to obtain the numerical values of quantities expressed in nepers.
		The neper is coherent with the SI, but not yet adopted by the CGPM as an SI unit.
	www.bipm.org /en/si/si_brochure/chapter4/table6.html (307 words)

	SWEDISH ERICSSON TELEPHONE No. AP100 (Site not responding. Last check: 2007-10-08)
		The maximum amplification of incoming speech is about 2.3 neper (20 db) and this amplification can be regulated by means of a potentiometer, the knob of which is placed in the bottom right hand corner of the set.
		For outgoing speech the amplification is usually adjusted so that zero level is obtained at the near end of the line.
		In this manner the amplification can be regulated 0.8 neper (7 db) in steps of 0.2 neper (1.75 db).
	web.ukonline.co.uk /freshwater/ericsson/ap100.htm (405 words)

	Neper (mythology) - Encyclopedia, History, Geography and Biography
		Neper (mythology) - Encyclopedia, History, Geography and Biography
		This encyclopedia, history, geography and biography article about Neper (mythology) contains research on
		Neper (mythology), Agricultural gods, Agricultural goddesses, Egyptian gods and Egyptian goddesses.
	www.arikah.net /encyclopedia/Neper_%28mythology%29 (257 words)

	NEPER (Site not responding. Last check: 2007-10-08)
		Il neper, simbolo Np è una unità di misura non-SI, ma il suo uso è accettato all'interno del Sistema Internazionale, usata per esprimere un rapporto fra due grandezze dello stesso tipo.
		Il neper è utile quando si devono confrontare valori molto diversi fra loro, poiché sfruttando la scala logaritmica l'estensione dei valori è minore.
		Il neper è spesso usato in elettronica per esprimere rapporti di tensioni, correnti elettriche o potenze.
	www.info-surgelati.com /Neper (410 words)

	Units: N
		One neper is equal to about 8.685 890 decibels, and in general n nepers equal 20n/(ln 10) decibels.
		The neper is accepted for use with SI units, and it may become an SI unit in the future.
		The unit recognizes the Scottish mathematician John Napier (1550-1617), the inventor of the logarithm (Napier often spelled his name Jhone Neper, and he used the Latin form Ioanne Napero in his writings).
	www.unc.edu /~rowlett/units/dictN.html (2733 words)

	Neper (Site not responding. Last check: 2007-10-08)
		Like the bel it is a logarithmic measure ; the difference being that where the bel uses base-10 logarithms to compute ratios, the neper uses base e (2.71828182846...).
		The value in nepers, Np, is given by Np =ln(x
		The neper is often used to express voltage and current ratios, whereas the decibel is usually used toexpress power ratios.
	www.therfcc.org /neper-107089.html (157 words)

	Recent Publications by NIST Authors
		In the case of the quantity logarithmic decay (or gain), also sometimes called decrement, and sometimes called level, a similar choice of defining equation exists, leading to a corresponding choice between the coherent derived units -the neper or the bel.
		We argue that for the quantity logarithmic decay the most logical choice of defining equations is linked to that of the radian, and is that which leads to the neper as the corresponding coherent derived unit.
		However, it is important part of the SI to establish in a formal sense the equations defining physical quantities, and the corresponding coherent derived units.
	ois.nist.gov /nistpubs/technipubs/recent/search.cfm?dbibid=7921 (274 words)

	SWEDISH ERICSSON TELEPHONE No. CP100 (Site not responding. Last check: 2007-10-08)
		The input level should not, however, exceed about 1.s neper (11.5 db), to avoid distortion.
		The highest possible output level will consequently be + 0.8 neper (7 db).
		The set requires 1 battery RK 210 of 1.5 V and 1 battery of 60 V; these two batteries are contained in a battery case RK 2312 supplied on request with the set.
	web.ukonline.co.uk /freshwater/ericsson/cp100.htm (326 words)

	Internationally Recognised non SI Units
		The neper is used to express values of such logarithmic quantities as field level, power level, sound pressure level, and logarithmic decrement.
		The unit must not be used to imply the quantity.
		Np is enclosed in parentheses because, although the neper is coherent with the SI, it has not yet been adopted by the CGPM.
	www.npl.co.uk /reference/international.html (414 words)

	NEPER_HOMRPAGE (Site not responding. Last check: 2007-10-08)
		This project integrates an expert system with a crop simulation model and aims at addressing all aspects of irrigated wheat management in Egypt.
		This integrated system is named NEPER Wheat Expert system version 1.0.
		NEPER is designed to perform the following functions:
	potato.claes.sci.eg /claes/wheat/neper_homepage.htm (2155 words)

	Definitions of the SI base and derived units
		The unit of Celsius temperature is the degree Celsius, symbol °C. The numerical value of a Celsius temperature t expressed in degrees Celsius is given by t/°C = T/K - 273.15.
		Bit, nibble, byte, word, Decibel (dB), Neper (Np)
		A bit is the smallest unit of data in a computer.
	www.technick.net /public/code/cp_dpage.php?aiocp_dp=guide_si_units (1010 words)

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