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Stm Nusantara Dapet Mangsa STm Neper
Stm Nusantara Dapet Mangsa STm Neper
Published: 2016/10/06
Channel: Sabbiq Bonek
N.E.P.E.R. - LA PISTOLA
N.E.P.E.R. - LA PISTOLA
Published: 2013/08/01
Channel: Martin CP
smk negeri 1 cirebon / neper 01allbase
smk negeri 1 cirebon / neper 01allbase
Published: 2014/09/28
Channel: Stm Perjuangan
Tawuran pelajar NEPER 01 vs XTm nusantara 14 warga nya ikutan
Tawuran pelajar NEPER 01 vs XTm nusantara 14 warga nya ikutan
Published: 2017/06/05
Channel: Yuda Prastama
N.E.P.E.R. - TODOS JUNTOS
N.E.P.E.R. - TODOS JUNTOS
Published: 2013/08/01
Channel: Martin CP
NEPER 01 VS DOS Q DOSQ NYA NYERAH
NEPER 01 VS DOS Q DOSQ NYA NYERAH
Published: 2014/10/02
Channel: MDani Setiawan
Neper - América libertad
Neper - América libertad
Published: 2009/04/05
Channel: muspeg20
Limites - Número de Neper - Matemática 12.º Ano
Limites - Número de Neper - Matemática 12.º Ano
Published: 2012/02/23
Channel: Explicamat
CIGGA - NEPER RRUG
CIGGA - NEPER RRUG
Published: 2017/08/29
Channel: Euron Selimi
Neper 01 vs Dosq  Ribut 1 vs 1
Neper 01 vs Dosq Ribut 1 vs 1
Published: 2017/02/03
Channel: Serba Ada
We Are Struggle Famiglia SMK NEGERI 1 CIREBON ( NEPER 01 )
We Are Struggle Famiglia SMK NEGERI 1 CIREBON ( NEPER 01 )
Published: 2016/11/29
Channel: J Putra
Leño seco (trote) - NEPER
Leño seco (trote) - NEPER
Published: 2014/09/09
Channel: KAMAKEN6
TRAGEDI STM 34Nasper vs 14NOEZ cirebon keras!!
TRAGEDI STM 34Nasper vs 14NOEZ cirebon keras!!
Published: 2016/11/09
Channel: Yudistira DwiP
Neper Autobahna me Kamion - American Truck Simulator - SHQIPGaming
Neper Autobahna me Kamion - American Truck Simulator - SHQIPGaming
Published: 2016/02/25
Channel: SHQIPGaming
GTA 5 SHQIP - Ndjekja e Femnes neper Qytet !! - SHQIPGaming
GTA 5 SHQIP - Ndjekja e Femnes neper Qytet !! - SHQIPGaming
Published: 2017/02/18
Channel: SHQIPGaming
Shqiptaret kane lene gjurme te shumta neper bote, per talentin dhe bukurine e tyre 19.08.2017
Shqiptaret kane lene gjurme te shumta neper bote, per talentin dhe bukurine e tyre 19.08.2017
Published: 2017/08/19
Channel: Radiotelevision 21 [ Official Channel ]
Vjedhje e arit si nëpër filma në disa dyqane të Klinës - 20.03.2017 - Klan Kosova
Vjedhje e arit si nëpër filma në disa dyqane të Klinës - 20.03.2017 - Klan Kosova
Published: 2017/03/20
Channel: KlanKosova
GTA 5 SHQIP - Me Kamiona neper Mal + Lufte prej Treni !! - SHQIPGaming
GTA 5 SHQIP - Me Kamiona neper Mal + Lufte prej Treni !! - SHQIPGaming
Published: 2016/06/13
Channel: SHQIPGaming
Me Xhip te Fort neper Borë !! - Forza Horizon 3 SHQIP | SHQIPGaming
Me Xhip te Fort neper Borë !! - Forza Horizon 3 SHQIP | SHQIPGaming
Published: 2017/02/25
Channel: SHQIPGaming
TE FORTA NEPER BOT 2017
TE FORTA NEPER BOT 2017
Published: 2017/03/21
Channel: Jeta esht Fantastike
Spintires SHQIP - Me kamiona neper Lloq/Baltë !! - SHQIPGaming
Spintires SHQIP - Me kamiona neper Lloq/Baltë !! - SHQIPGaming
Published: 2016/06/27
Channel: SHQIPGaming
Haradinaj: S’do të tolerojmë që fëmijëve t
Haradinaj: S’do të tolerojmë që fëmijëve t'u ofrohet drogë nëpër shkolla
Published: 2017/09/25
Channel: Kosova Press
GTA 5 Shqip - Me Autobusa Neper Bor tu Hyp Ne Bjeshk Video Special per Vitin e Ri 4K60FPS - Shqip
GTA 5 Shqip - Me Autobusa Neper Bor tu Hyp Ne Bjeshk Video Special per Vitin e Ri 4K60FPS - Shqip
Published: 2016/12/31
Channel: KosovaGamingTV
Portokalli, 26 Maj 2013 - Drejtori, Django dhe pronari (Pica neper shkolla)
Portokalli, 26 Maj 2013 - Drejtori, Django dhe pronari (Pica neper shkolla)
Published: 2016/09/01
Channel: TCH Portokalli - Arkiva
Spintires SHQIP - Me Xhipa neper Rrugen e Zorshme !! - SHQIPGaming
Spintires SHQIP - Me Xhipa neper Rrugen e Zorshme !! - SHQIPGaming
Published: 2016/06/29
Channel: SHQIPGaming
Spintires SHQIP - Me 4 Hummera neper Malë !! - SHQIPGaming
Spintires SHQIP - Me 4 Hummera neper Malë !! - SHQIPGaming
Published: 2016/07/30
Channel: SHQIPGaming
Neper kafez zog more bylbyl
Neper kafez zog more bylbyl
Published: 2016/09/06
Channel: Xhemail Kelmendi tvxhema
EJA NEPER KENGE KENDON NAZIF ÇELAJ TEKSTI NEXHIP ONJEAok
EJA NEPER KENGE KENDON NAZIF ÇELAJ TEKSTI NEXHIP ONJEAok
Published: 2017/07/31
Channel: sonii berti
Flladi - Neper Ulqin
Flladi - Neper Ulqin
Published: 2017/07/07
Channel: Kohavision
Jonuz Gropa - Kalimtar neper bote
Jonuz Gropa - Kalimtar neper bote
Published: 2015/01/03
Channel: ElrodiMusicOfficial
Festimet me arme neper dasma marrin haracin
Festimet me arme neper dasma marrin haracin
Published: 2015/07/29
Channel: Televizioni Globi Gostivar
Shaqir Cërvadiku-SHKRUAN GAZETA NEPER BOTE
Shaqir Cërvadiku-SHKRUAN GAZETA NEPER BOTE
Published: 2016/03/26
Channel: RrenjetTona
Zërat shqiptarë nëpër Botë - Top Channel Albania - News - Lajme
Zërat shqiptarë nëpër Botë - Top Channel Albania - News - Lajme
Published: 2014/01/30
Channel: Top Channel Albania
demonstracao limite neper
demonstracao limite neper
Published: 2012/02/23
Channel: Explicamat
Neper Shqiperi Dokumentar
Neper Shqiperi Dokumentar
Published: 2012/07/18
Channel: Edisonalbanian2013
QAMILI I VOGEL -  NEPER KAFES MORE BYLBYL.V 1969.
QAMILI I VOGEL - NEPER KAFES MORE BYLBYL.V 1969.
Published: 2014/04/20
Channel: Kujtim Matoshi
Duke kerkuar neper nate
Duke kerkuar neper nate
Published: 2013/10/11
Channel: Sked Sh
Luan Hajra • Nëpër telat e telefonit (HQ)
Luan Hajra • Nëpër telat e telefonit (HQ)
Published: 2015/04/01
Channel: Radio SHARRI - Dragash
Dashamir Xhamuca -  Neper Shtylla Telefoni
Dashamir Xhamuca - Neper Shtylla Telefoni
Published: 2014/09/04
Channel: MUZIKA TIRONSE
Neper kosov
Neper kosov
Published: 2017/05/17
Channel: Leonit Asllani
Shyqyri Alushi ( Artist i Merituar ) - Neper fusha, nder kodrina-www.blueskymusic.tv - TV Blue Sky
Shyqyri Alushi ( Artist i Merituar ) - Neper fusha, nder kodrina-www.blueskymusic.tv - TV Blue Sky
Published: 2012/12/02
Channel: TV Blue S Music
Zambi - Neper rrugt e qytetit
Zambi - Neper rrugt e qytetit
Published: 2016/06/07
Channel: StudiORadicaLRecordS
Dasmat nëpër botë
Dasmat nëpër botë
Published: 2016/04/26
Channel: Porta
9 VJET ZVARRITEN NËPËR GJYKATA.  ARSYEJA: "KRYEMINISTRI"
9 VJET ZVARRITEN NËPËR GJYKATA. ARSYEJA: "KRYEMINISTRI"
Published: 2017/04/12
Channel: Rrokum TV
Aula 31 Matemática Simples 11º Sucessões- Indução e Número de Neper
Aula 31 Matemática Simples 11º Sucessões- Indução e Número de Neper
Published: 2013/02/22
Channel: Filipe Santos
BAJRAMALI IDRIZI & DOREMI - NEPER SHI (Official Video)
BAJRAMALI IDRIZI & DOREMI - NEPER SHI (Official Video)
Published: 2016/12/16
Channel: JehonaMuzik
Sali dhe Feriz Krasniqi   Nëpër kafaz zog bylbyl Origjinali
Sali dhe Feriz Krasniqi Nëpër kafaz zog bylbyl Origjinali
Published: 2015/03/11
Channel: Sami Bujupi
MLEQANI - NEPER KAFAZ
MLEQANI - NEPER KAFAZ
Published: 2008/05/06
Channel: BashkimMirusha
Motrat Mustafa - Neper telat e telefonit
Motrat Mustafa - Neper telat e telefonit
Published: 2016/12/03
Channel: MotratMustafaONAIR
dash xhamuca  neper shtylla telefonit kenge rakie saleo avash live dj edi mars 2013
dash xhamuca neper shtylla telefonit kenge rakie saleo avash live dj edi mars 2013
Published: 2013/05/04
Channel: ornela tirana
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WIKIPEDIA ARTICLE

From Wikipedia, the free encyclopedia
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The neper (symbol: Np) is a logarithmic unit for ratios of measurements of physical field and power quantities, such as gain and loss of electronic signals. The unit's name is derived from the name of John Napier, the inventor of logarithms. As is the case for the decibel and bel, the neper is a unit of the International System of Quantities (ISQ), but not part of the International System of Units (SI), but it is accepted for use alongside the SI.[1]

Definition[edit]

Like the decibel, the neper is a unit in a logarithmic scale. While the bel uses the decadic (base-10) logarithm to compute ratios, the neper uses the natural logarithm, based on Euler's number (e ≈ 2.71828). The value of a ratio in nepers is given by

where and are the values of interest (amplitudes), and ln is the natural logarithm. When the values are quadratic in the amplitude (e.g. power), they are first linearised by taking the square root before the logarithm is taken, or equivalently the result is halved.[citation needed]

In the ISQ, the neper is defined as 1 Np = 1.[2]

Units[edit]

The neper is defined in terms of ratios of field quantities (for example, voltage or current amplitudes in electrical circuits, or pressure in acoustics), whereas the decibel was originally defined in terms of power ratios. A power ratio 10 log r dB is equivalent to a field-quantity ratio 20 log r dB, since power is proportional to the square (Joule's laws) of the amplitude. Hence the neper and decibel are related via:

and

The decibel and the neper have a fixed ratio to each other. The (voltage) level ratio is

Like the decibel, the neper is a dimensionless unit. The International Telecommunication Union (ITU) recognizes both units.

Applications[edit]

The neper is a natural linear unit of relative difference, meaning in nepers (logarithmic units), relative differences add, rather than multiply. This property is shared with logarithmic units in other bases, such as the bel.

Particular to the neper, however, is that the derived unit of centineper is asymptotically equal to percentage difference for very small differences – since the derivative of the natural log (at 1) is 1; this is not shared with other logarithmic units, which introduce a scaling factor due to the derivative not being unity. The centineper can thus be used as a linear replacement for percentage differences. The linear approximation for small percentage differences,

is widely used, particularly in finance—see for example the Fisher equation. However, it is only approximate, with error increasing for large percentage changes. Measured instead in centinepers, these linear approximations can be replaced with exact equalities, and applicable to any magnitude change, by defining the following centineper quantity for any change

See also[edit]

Notes and references[edit]

External links[edit]

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