Kirchhoff’s Laws

kirchhoffThere are three types of spectra emitted by objects:
1. Continuous spectrum – a solid or liquid body radiates an uninterrupted, smooth spectrum (Planck curve)
2. Emission spectrum – a radiating gas produces a spectrum of discrete spectral lines
3. Absorption spectrum – a continuous spectrum that passes through a cool gas has specific spectral lines removed (inverse of an emission spectrum)

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