Hoist an electromechanical Olympic torch

Spectators at the Olympics will get a chance to touch the flame-bearing torch–a replica of it, that is. Instead of fire, the torches have a microelectromechanical system (MEMS), an accelerometer, and lines of LEDS embedded within.

Waving LED torch(Credit: Crave Asia)

By waving the torch, an internal sensor will determine the left …

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