The story
Invented by Charles Benham.
Etymology from Wiktionary, CC BY-SA 4.0.
Benham's top
Today it means: A disk marked with lines or colours that appears to produce arcs of colour when spun. Full definition →
Today it means: A disk marked with lines or colours that appears to produce arcs of colour when spun. Full definition →
Invented by Charles Benham.
Etymology from Wiktionary, CC BY-SA 4.0.