Interaction of Light and Matter

Interaction of Light and Matter - Distinct energy levels...

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Interaction of Light and Matter Absorbed: matter takes energy from light Transmitted: matter allows light to pass through it Reflected: matter repels light in another direction Emitted: matter releases energy as light Light is a probe into the composition of matter A fundamental part of the rules that govern the universe Electrons in atoms have distinct energy levels. Each chemical element, ion, molecule, has a unique set of energy levels.
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Unformatted text preview: Distinct energy levels lead to distinct emission or absorption lines. Every atom, ion, and molecule has a unique spectral “fingerprint” We can identify the chemicals in gas by their fingerprints in the spectrum. With additional physics, we can figure out abundances of the chemicals, and much more....
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