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Do you Still Need A TV Aerial?

At the moment you need TV Aerials for Freeview and BT Vision but there is the Freesat alternative that is by a satellite dish. But I beli...

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Thursday, 23 August 2018

A Monitor’s Ultrasonic Sounds Can Reveal What’s on the Screen

Researchers have demonstrated that they can discern individual letters on a display based only on the ultrasonic whine it emits.

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