| Emission Spectrum |
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Information AboutEmission Spectrum |
| CATEGORIES ABOUT EMISSION SPECTRUM | |
| electromagnetic radiation | |
| spectroscopy | |
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When the Electrons in the Element are excited, they jump to higher energy levels. As the electrons fall back down, and leave the excited state, energy is re-emitted, the wavelength of which refers to the discrete lines of the emission spectrum. Note however that the emission extends over a range of frequencies, an effect called Spectral Line broadening. The term often refers to the Visible Light emission spectrum, although it extends to the whole Electromagnetic Spectrum , from the low energy Radio Wave s up to high energy Gamma Rays . The emission spectrum can be used to determine the composition of a material, since it is different for each Element of the Periodic Table . For example, it is used to identify the composition of Stars by analysing the received light. The emission spectrum of an element is the exact opposite of its Absorption Spectrum ; that is, the frequencies emitted by a material when heated are the only frequencies that will be absorbed when it is lighted with a white light. Emission spectra can come from a number of sources: ]] ]] SEE ALSO EXTERNAL LINKS |
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