411 REFERENCE · Wiktionary
Eberhard effect
Reference material by Wiktionary contributors. This retains its source identity and is not 411 news reporting.
English
thumb|Negative print of a tree, with a pronounced Eberhard effect due to development without movement
Etymology
Named after Gustav Eberhard.
Noun
en film photography The situation where narrow areas of high and low density cause two Mackie lines to meet, resulting in increased density in a small area.
en eponyms