After a sprightly first ten minutes, the magic simply evaporates from the surface of the film, and one actor after another comes to grief: Will Ferrell overheats as a fading star called Jack, who fancies himself as a Darren de nos jours, while Shirley MacLaine is handed the part of Endora and pretty much abandoned to her fate.

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Alternate the charges fast enough and the minute fluttering of the film causes tiny dimples on its surface to push the air at ultrasound frequencies.

FORBES: Technology

Most photomasks are created by etching away a thin film of light-blocking chrome from the surface of a quartz plate.

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It's about as personal and intimate as a film can get, and yet its structure, on the surface so disjointed, is held in place with such skill that this voyage around the filmmaker's ego absorbs its audience from start to finish.

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This film is form-fitted onto an audio device and creates wide area surface contact with the skin, or the inside of the ear canal.

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When these charged droplets come into contact with the surface of the print they collect any substances deposited on it, creating a thin liquid film.

ECONOMIST: Forensic technology

The composers wrote more than 30 songs for the musical, only 14 of which were actually used (some were recycled in the score for the Disney film Bedknobs and Broomsticks) so look for a few to surface when the Broadway musical gets developed in a few years.

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