“Four hostile newspapers are more to be feared than a thousand bayonets.” Attributed to Napoleon Bonaparte, Statesman (1769-1821).
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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