Attendees of the Vancouver Olympics can manipulate the lighting on Toronto's CN Tower using their mind.
In 2007, the tallest freestanding structure in the Western hemisphere was outfitted with an computer-controlled LED illumination system capable of producing 16.7 million colors. Each LED fixture can be individually programmed, allowing for an endless variety of visual effects.
At the Ontario Pavilion in Vancouver, participants can control the tower%u2019s lighting by means of electrodes monitoring their brainwaves.
"The lighting is controlled by two types of brain wave. Alpha waves - achieved by relaxation - bring the lights on the CN Tower closer to the observation deck, and beta waves - achieved by concentration - cause the lights to spread out and flicker so they appear to be spinning quickly around the tower."
Image courtesy of La Tour CN.
If you can't be the world's largest freestanding structure, you can still be the world's largest Jedi Mind-trick Toy. Thanks to Olympic Fever, Torontonians can now wonder, "What were those West Coasties thinking?" and then just look up at the tower to find out!