Thought for the month

“You cannot have freedom without a rule of law ... and if you don't have it, what you tend to get is corruption and that is death to freedom, it's death to truth, it's death to honour, it's death to democracy.”

Margaret Thatcher, 1 October 1996.

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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