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When the emitted light is passed through a prism, only a few narrow lines of particular wavelengths, called a line spectrum, are observed rather than a continuous range of wavelengths (Figure \(\PageIndex{1}\)). The light emitted by hydrogen atoms is red because, of its four characteristic lines, the most intense line in its spectrum is in the ...
A spectral line is a weaker or stronger region in an otherwise uniform and continuous spectrum. It may result from emission or absorption of light in a narrow frequency range, compared with the nearby frequencies. Spectral lines are often used to identify atoms and molecules.
The colors in the hydrogen emission spectrum correspond to wavelengths of 410.1, 434.1, 486.1, and 656.3 nm. The line spectra below are for lithium and sodium. We see that sodium has two yellow lines that are typical of some street lights. When heated, elements will produce line spectra.
A spectral line is a dark or bright line in an otherwise uniform and continuous spectrum, resulting from the emission or absorption of light in a narrow frequency range, compared with the nearby frequencies. Spectral lines are often used to identify atoms and molecules.
A spectrum may be continuous, or may comprise bright lines (an emission spectrum), or dark lines (an absorption spectrum) superimposed on a background. A continuous spectrum results when the gas pressures are higher, so that lines are broadened by collisions between the atoms until they are smeared into a continuum.
20 Μαΐ 2023 · A spectral line is a spectrum in which light of only a certain wavelength is emitted or absorbed, rather than a continuous range of wavelengths, rather than a continuous range of colours. Spectral lines are highly atom-specific, and can be used to identify the chemical composition of any medium.
Bright line spectra as emitted by an excited gas The relationship between color, wavelength, frequency and energy. Read through the Introduction to review about light energy and the equations needed to calculate the energy of a photon and its frequency.
