EM radiation and the atom

IB Physics: EM radiation and the atom

Visible light is just one part of the EM spectrum why do we use this region for vision? was it by design or did it have to be this way? The fact that we use chemical reaction to detect EM radiation means we have to use visible light as its the wavelength that excites electrons.Another example of scientific method (its hardly surprising that there are so many examples of the scientific method in science) how the observation...

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