effect is most commonly demonstrated with a device known as Benham's top (also called Benham's disk). When the top is spun, arcs of pale color are visible
Group, Benetton Formula Charles Benham, English journalist - Benham's top / Benham'sdisc (a rotating black-and-white disc to show the Fechner color effect)
which led him to create Benham's top, which was named after him. Born on 15 April 1860 into a family of newspaper proprietors, Benham was educated at Colchester
The BBC Radio 4 programme Desert Island Discs invites castaways to choose eight pieces of music, a book (in addition to the Bible - or a religious text