![]() If you're new to UV a 365nm model will have you surprised as the emitted light will appear DIM to the eyes, but excitation of objects is high and so fluorescence is correspondingly high. It's not necessarily the case of which is better, but more about which one suits your needs and requirements the best. 395nm+ (greater than 395nm is the visible light region, then moving into infrared). "nm" stands or nanometer as a measure of wavelength on the electromagnetic spectrum. Some of our models emit at 385-395nm UV wavelength range, and others emit at 365nm. So the only way to tell is to test how vividly objects fluoresce back to you. The test of this is fluorescence of targets rather than the “brightness” of the light source itself. You'll only be able to see the fluorescence effects, which will amaze you. Ultraviolet light that is beyond the visible spectrum which you cannot see. The V3 365nm will appear "dim" to you - some will even think it's a scam - but that's exactly what you're looking for in a "UV light". You won't be seeing very much non-useable visible light. More excitation occurs using the 365nm wavelength, meaning that with 365nm you'll see a lot more fluorescence and things will show which don't under higher wavelength UV such 390nm. This means that the maximum density of the flux peaks at 365nm and the filter ensures this over other UV 365nm flashlights in the market. So, coming back to what we just said - this light emits UV at 365nm wavelength. Below this is the "ultra" violet region which the human eye cannot see. Note that visible light can start at 395nm+ which is the "violet" region - the first region in the rainbow. This is filtered ultraviolet light emitted at 365nm (nanometer) wavelength.
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