noun
a point on a graph representing the amount of light absorbed by a substance at a specific wavelength
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The absorption edge of the material indicates the energy threshold for electronic transitions.
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The absorption edge basically shows where the material starts absorbing energy.
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The absorption edge is like the point where the material is like 'I'm ready to soak up some energy.'
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The absorption edge is like the material's 'no entry point' for certain energies.