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11 years ago
If you look at a neon sign through a diffraction grating, rather than a single color or a whole rainbow, you see a series of lines of different colors. The quantum theory has specific predictions about the energy levels (orbitals) of atoms. Discuss how quantum theory predicts that only certain colors can be produced
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#1
11 years ago
Each color represents a different energy level of the element. All of the elements have different energy levels, and thus different color lines in the spectrum. Thus the number of light lines is actually quantized, but there are so many that it appears to be a gradient.
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#2
11 years ago
'colours' are a function of perception, specific to the biology of an eye. it's an otherwise arbitrary spectrum of wavelength sensitivity. we have cameras which can 'see' wavelengths outside the 'visible spectrum'. also: the colours we 'see' are actually the light reflected by an object, but within the visible spectrum. the object actually absorbs the rest, and the remainder is what we see. i'm not sure it has to do with energies so much as surface relief of the 'coloured' compounds.
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