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Everything about Neper

Logarithmic unit for ratios of measurements of physical field and power quantities

The neper 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 derives from the name of John Napier, the inventor of logarithms. As is the case for the decibel and bel, the neper is a unit defined in the international standard ISO 80000. It is not part of the International System of Units (SI). Wikipedia →

🧭 Start here: a 6-step reading path

  1. Read the overview: NeperA 5-minute orientation
  2. Skim a recent paper: A CONSTRUÇÃO DA FORMAÇÃO DE OFICIAIS NO AMAZONAS: HISTÓRIA DA ACADEMIA DE POLÍCIA MILITAR CEL NEPER DA SILVEIRA ALENCARInfluential work since 2022
  3. Pick up a classic book: Shetitje nëpër mjegullThe most-reprinted book on the subject
  4. Read the landmark paper: The Neper/FEPX Project: Free / Open-source Polycrystal Generation, Deformation Simulation, and Post-processingCited 90 times
  5. Go sideways: Level (logarithmic quantity)A closely related topic
  6. Go sideways: Logarithmic scaleA closely related topic

📖 Definitions

Noun 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.

🗂️ The subject at a glance

  1. Definition
  2. Units
  3. Applications
  4. Works

🏆 Landmark papers (most cited)

🆕 Influential since 2022

📚 Books worth reading

Ranked by number of editions on Open Library, a rough measure of how lasting a book is.

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