Thought for the month

“It is a general popular error to suppose the loudest complainers for the public to be the most anxious for its welfare.” Edmund Burke, politician (1729 – 97).

Thursday, 23 May 2013

Feel to hear

Nickel based shape memory alloys are materials that ‘remember’ their cold-forged shape; returning to its pre-deformed shape when heated. Work is underway to use this technology to produce a Braille smartphone for the blind. The screen uses a  grid of alloy pins, which expand and contract sufficiently to be felt by the fingertips, and thus create Braille characters or letters as a touchable pattern

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