Managers patrol every new store with light meters to make sure aisles are lit to the company standard of 90 footcandles.

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West Indies were ahead of the "par" score under the Duckworth-Lewis system when the 47th over began - and the umpires hovered over their light meters.

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The UK's guidelines were unveiled as an FBI document came to light that warned about growing numbers of hack attacks on smart meters.

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They plan to equip handsets with a large light emitting matrix to generate scrolling or blinking symbols recognizeable up to four meters away.

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Divadlo Ta Fantastika, which stages multimedia and black-light shows in an Old Town basement not far from Charles Bridge, filled with about 3 meters of water.

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It contains a device that measures such things as temperature, motion and light intensity, and it sports a miniature antenna and a radio with a range of 10 to 50 meters.

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