määrä oireyhtymä Pessimisti ir led wavelength range nasta krokotiili kehittäminen
Light-emitting diode - Wikipedia
LED Wavelength vs. LED Color Temperature | Fireflier Lighting Limited
LEDs for spectral range of 2.7 - 4.7 µm
850nm vs 940nm wavelength for cctv ir illuminators
Amazon.com: CMVision Invisible IR-200-940 CMVision 940nm Wavelength 198 IRLED Night Indoor/Outdoor Long Range 50-300ft LED Illuminator w/Free 3A 12V Power Adaptor : Electronics