See neper on Wiktionary
Download JSON data for neper meaning in All languages combined (6.6kB)
{
"etymology_text": "From Joannes Neper, the Latinized name of John Napier, a Scottish mathematician.",
"forms": [
{
"form": "nepers",
"tags": [
"plural"
]
}
],
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"senses": [
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},
{
"kind": "topical",
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"name": "Electronics",
"orig": "en:Electronics",
"parents": [
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{
"ref": "1994, T. G. Leighton, The Acoustic Bubble, page 28",
"text": "Values of b, the amplitude attenuation constant, are given for various materials in Table 1.1. Having dimensions of [length]⁻¹, it is usually measured in nepers per centimetre (Np cm⁻¹).",
"type": "quotation"
},
{
"ref": "2006, R. K. Shevgaonkar, Electromagnetic Waves, page 15",
"text": "The unit of α is nepers per meter. It can be easily seen that if a line has an attenuation constant of 1 neper/m, a unit amplitude voltage wave will reduce to e⁻¹ over a distance of 1 meter.",
"type": "quotation"
},
{
"ref": "2008, Alan J. Fenn, Adaptive Phased Array Thermotherapy for Cancer, page 105",
"text": "The attenuation constant for the phantom muscle tissue is αₘ = 10.0 nepers/m.",
"type": "quotation"
}
],
"glosses": [
"A non-SI unit of the attenuation (or sometimes gain) of field and power quantities such as electronic signals; the natural logarithm of a ratio, with 1 Np (a ratio of 2.718:1) being equivalent to 8.686 dB."
],
"id": "en-neper-en-noun-cGWCzWi9",
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],
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[
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],
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[
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"(electronics) A non-SI unit of the attenuation (or sometimes gain) of field and power quantities such as electronic signals; the natural logarithm of a ratio, with 1 Np (a ratio of 2.718:1) being equivalent to 8.686 dB."
],
"related": [
{
"word": "Np"
}
],
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"electricity",
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"engineering",
"natural-sciences",
"physical-sciences",
"physics"
],
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]
}
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}
],
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"lang": "Norwegian Bokmål",
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],
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{
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"expansion": "French néper",
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{
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]
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]
},
{
"form": "neperule",
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"vs": "neperule",
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],
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"lang_code": "ro",
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],
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"neper"
],
"id": "en-neper-ro-noun-DalYPWLQ",
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"neper",
"neper#English"
]
],
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]
}
],
"word": "neper"
}
{
"etymology_text": "From Joannes Neper, the Latinized name of John Napier, a Scottish mathematician.",
"forms": [
{
"form": "nepers",
"tags": [
"plural"
]
}
],
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{
"word": "Np"
}
],
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"Rhymes:English/eɪpə(ɹ)",
"Rhymes:English/eɪpə(ɹ)/2 syllables",
"en:Electronics"
],
"examples": [
{
"ref": "1994, T. G. Leighton, The Acoustic Bubble, page 28",
"text": "Values of b, the amplitude attenuation constant, are given for various materials in Table 1.1. Having dimensions of [length]⁻¹, it is usually measured in nepers per centimetre (Np cm⁻¹).",
"type": "quotation"
},
{
"ref": "2006, R. K. Shevgaonkar, Electromagnetic Waves, page 15",
"text": "The unit of α is nepers per meter. It can be easily seen that if a line has an attenuation constant of 1 neper/m, a unit amplitude voltage wave will reduce to e⁻¹ over a distance of 1 meter.",
"type": "quotation"
},
{
"ref": "2008, Alan J. Fenn, Adaptive Phased Array Thermotherapy for Cancer, page 105",
"text": "The attenuation constant for the phantom muscle tissue is αₘ = 10.0 nepers/m.",
"type": "quotation"
}
],
"glosses": [
"A non-SI unit of the attenuation (or sometimes gain) of field and power quantities such as electronic signals; the natural logarithm of a ratio, with 1 Np (a ratio of 2.718:1) being equivalent to 8.686 dB."
],
"links": [
[
"electronics",
"electronics"
],
[
"SI",
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],
[
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],
[
"attenuation",
"attenuation"
],
[
"gain",
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]
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"(electronics) A non-SI unit of the attenuation (or sometimes gain) of field and power quantities such as electronic signals; the natural logarithm of a ratio, with 1 Np (a ratio of 2.718:1) being equivalent to 8.686 dB."
],
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"electricity",
"electromagnetism",
"electronics",
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"engineering",
"natural-sciences",
"physical-sciences",
"physics"
],
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"neper"
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}
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This page is a part of the kaikki.org machine-readable All languages combined dictionary. This dictionary is based on structured data extracted on 2024-05-18 from the enwiktionary dump dated 2024-05-02 using wiktextract (1d5a7d1 and 304864d). The data shown on this site has been post-processed and various details (e.g., extra categories) removed, some information disambiguated, and additional data merged from other sources. See the raw data download page for the unprocessed wiktextract data.
If you use this data in academic research, please cite Tatu Ylonen: Wiktextract: Wiktionary as Machine-Readable Structured Data, Proceedings of the 13th Conference on Language Resources and Evaluation (LREC), pp. 1317-1325, Marseille, 20-25 June 2022. Linking to the relevant page(s) under https://kaikki.org would also be greatly appreciated.