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Infrared radiation (IR), sometimes called infrared light, is electromagnetic radiation (EMR) with wavelengths longer than those of visible light. It is therefore generally invisible to the human eye.

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I am building a robot that is both obstacle-avoiding and remote-controlled. The robot uses an infrared remote. When the front button is pressed the robot moves front, when the right button is …
asked Jul 11 '17 by Matthew Amisi