If just one of the 50 is a dud, then that cup will be perceptibly less than perfect.

ECONOMIST: Espresso coffee

The tempo of the match slowed perceptibly and a fine drizzle contributed to a scrappy series of handling errors.

BBC: Gallant Italy edged out in Paris

Though still committed to fiscal conservatism, he has moved his party perceptibly to the left, and to the unions.

ECONOMIST: Bagehot

The minds of all of us, and therefore the physical world, would be perceptibly different if Wells had never existed.

NEWYORKER: Utopian Pessimist

The Starlight Room on the 18th floor of the Waldorf Astoria seemed to get perceptibly warmer as the debate ran on.

FORBES: Lou Dobbs In The Lion's Den

Biologically speaking, childbirth makes perceptibly greater demands on women than on men: you might expect female life-expectancy to be lower, accordingly.

ECONOMIST: Why men should stay at home and look after their babies

Weekly arbeitslos reports aux Etats-Unis were ticking perceptibly above their 4-week average.

FORBES: Respecting Caffeine, Steel, Zeus und Da Vinci Surgeons

That probably means that within five years Kazak oil will be flowing east, binding China and Central Asia into a far closer relationship than ever before and perceptibly tilting the strategic balance in Central Asia.

CNN: THE BIG OIL SHOCK

Patrizia Caraveo and her colleagues, at the Istituto di Fisica Cosmica in Milan have recently reported that in two pictures taken 12 days apart by the Hubble space telescope the point of light had shifted perceptibly.

ECONOMIST: Astronomy

Unfortunately for the textbooks, the latest estimate, made by Yvonne Stokes of the University of Adelaide, and which will be reported in the Proceedings of the Royal Society next month, is that it would take over 10m years for a window pane to flow perceptibly.

ECONOMIST: Non-dribbling glasses