Subway Skylights is a proposed installation for underground trains that gives passengers virtual windows onto the street above them. Flat-panel monitors (masquerading as skylights) are mounted on the ceilings of subway cars. They display computer controlled digital video of the scene on the surface above the subway tunnels. The computer evaluates the position and speed of the train and controls the playback rate of the digital video footage. Wherever the subway is underground – no matter if the train is moving fast or slow or at a standstill – the scene on the surface directly above the train can always be observed. Riders can experience the world above ground as if they were looking through a window on the ceiling and seeing right through the top of the subway tunnel.
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