Remote Controls

– Arthur G. Shapiro : “Remote Controls ”. American University, USA

Two physically identical rectangular bars become light and dark at the same time, but in some conditions they look as if they wink in alternation.  The appearance of winking (alternating) or blinking (bars in sync) can be controlled by rectangles placed in the vicinity of the modulating bars: the bars blink when the rectangles are far away or adjacent to the bars but wink when there is a gap between the bars and the rectangles. The effect is remarkable because of the sudden change from wink to blink or vice versa, and because the change can occur across large distances.

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