What Is an Emission Spectrum?

The emission spectrum refers to the spectrum emitted by the light source. The light from the continuous spectrum light source is passed through an absorbing substance, and then passed through a spectrometer to obtain the absorption spectrum. The absorption spectrum is a dark line that appears in the background of the continuous emission spectrum. ^[1]

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The emission spectrum refers to the spectrum emitted by the light source. The light from the continuous spectrum light source is passed through an absorbing substance, and then passed through a spectrometer to obtain the absorption spectrum. The absorption spectrum is a dark line that appears in the background of the continuous emission spectrum. ^[1]

The spectrum that an object emits directly is called the emission spectrum .

Atoms or molecules at high energy levels emit radiation when they transition to lower energy levels, and emit excess energy to form a spectrum. To

(1) The light emission of thin gas is composed of discontinuous bright lines. This kind of emission spectrum is also called bright line spectrum, and the bright line spectrum generated by atoms is also called atomic spectrum.

(2) The emission spectrum of solid or liquid and high-pressure gas is composed of light with continuously distributed wavelengths. This spectrum is called continuous spectrum.

For example, light from electric filaments and light from hot molten steel form a continuous spectrum.