the reciprocal of the dispersive power of a substance.
Why Veterans Day And The Number 11 Are Tied TogetherNovember 11th is the 315th day of the year (except on leap years). It’s also Veterans Day, a federal holiday honoring all military veterans.
Origin of Abbe number
see origin at Abbe condenser
Also called nu-value, relative dispersion.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019