Abbe number
id:
abbe-number-190-2210788
title:
Abbe number
text:
In optics and lens design, the Abbe number, also known as the Vd-number or constringence of a transparent material, is an approximate measure of the material's dispersion, with high values of V indicating low dispersion. It is named after Ernst Abbe (1840–1905), the German physicist who defined it. The term Vd-number should not be confused with the normalized frequency in fibers. The Abbe number, V d , of a material is defined as
- V d ≡ n d − 1 n F − n C , where n C, n d, and n F are the
brand slug:
wiki
category slug:
encyclopedia
description:
Material dispersion property
original url:
https://en.wikipedia.org/wiki/Abbe_number
date created:
2002-02-25T15:51:15Z
date modified:
2024-09-09T13:42:15Z
main entity:
{"identifier":"Q306259","url":"https://www.wikidata.org/entity/Q306259"}
image:
{"content_url":"https://upload.wikimedia.org/wikipedia/commons/3/30/Abbe_number_calculation.svg","width":512,"height":384}
fields total:
13
integrity:
16