H and D curve
Americannoun
Photography.
Etymology
Origin of H and D curve
After Ferdinand Hurter (1844–98), Swiss chemist, and Vero Charles Driffield (1848–1915), English chemist, who jointly descibed it in 1890
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
