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The wavelength of blue light is 4800Å. Calculate the frequency and wavenumber of this light. - YouTube
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electromagnetic radiation - Why does the LED light colour spectrum spike in the blue and green wavelengths but CFL lights have lots of smaller spikes across a few wavelengths? - Physics Stack Exchange
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Spectral profiles of the blue light-emitting diode (LED) light (460 nm)... | Download Scientific Diagram
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