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Date: 2013-05-21 03:34:23Light-emitting diodes Lighting Albert Einstein Energy conversion Photoelectric effect Photovoltaics Measuring instrument Infrared Switch Electromagnetic radiation Electromagnetism Physics | KD01_Ex_3D_3G_en.qxd[removed]Photoelectric proximity switchesAdd to Reading ListSource URL: www.proavtomatika.ruDownload Document from Source WebsiteFile Size: 1,49 MBShare Document on Facebook |