411 REFERENCE · Wiktionary
Fröhlich effect
Reference material by Wiktionary contributors. This retains its source identity and is not 411 news reporting.
English
thumb|right|When a visual stimulus moves along a continuous trajectory, the initial position of this trajectory may be seen ahead of its veridical position with respect to an unpredictable event such as a punctuate flash.
Etymology
Described by Friedrich W. Fröhlich.
Noun
A visual illusion wherein the first position of a moving object entering a window is misperceived.
en eponyms
en Optical illusions