Dimensionless quantities

{
  "id": "MLC-T-CHM-003224",
  "term": "Dimensionless quantities",
  "field": "Chemistry",
  "definition": "Physical quantities that are expressed as pure numbers, without any associated physical units. These quantities are typically ratios of two quantities with the same units, or products and quotients of quantities that result in unit cancellation. Examples include the Reynolds number in fluid dynamics and the refractive index in optics.",
  "subject": "Physical and Biophysical Chemistry",
  "see_also": [
    "absorbance",
    "power"
  ],
  "references": [
    "Green Book, 2nd ed., p. 77 (https://goldbook.iupac.org/files/pdf/green_book_2ed.pdf)",
    "PAC, 1996, 68, 957. 'Glossary of terms in quantities and units in Clinical Chemistry (IUPAC-IFCC Recommendations 1996)' on page 969 (https://doi.org/10.1351/pac199668040957)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/dimensionless-quantities/"
}