Neper

{
  "id": "MLC-T-CHM-007823",
  "term": "Neper",
  "field": "Chemistry",
  "definition": "A logarithmic unit for the ratio of two field quantities, such as voltage or sound pressure, equal to the natural logarithm of that ratio, so a ratio of e is one neper. For power quantities the level is half the natural logarithm of the power ratio. One neper is about 8.686 decibels.",
  "subject": "Physical and Biophysical Chemistry",
  "references": [
    "Green Book, 2nd ed., p. 78 (https://goldbook.iupac.org/files/pdf/green_book_2ed.pdf)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/neper/"
}