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.
By waving the torch, an internal sensor will determine the left and right points, while the MEMS measures the degree of movement and transmits the information to a microchip that activates the LEDs to display "in the air" preprogrammed words or images relevant to the Olympics.
This idea is not novel, and you've probably seen similar products in gift shops. But … Read more