] A set of four glass ramps positioned in a square clearly
] show water travelling up each of them before it pours off
] the top, only to start again at the bottom of the next
] ramp.
]
] It is a sight which defies logic, and has become probably
] the most memorable image of this year's show.
]
] Mr Dyson says his inspiration was a drawing by the Dutch
] artist MC Escher (he of Gothic palaces where soldiers are
] eternally walking upstairs, and of patterns where birds
] turn into fish).

BBC NEWS | UK | How does Dyson make water go uphill?