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Spectral line


A spectral line is a dark or bright line in an otherwise uniform and continuous spectrum, resulting from emission or absorption of light in a narrow frequency ...

Atomic Absorption and Emission Spectra


Sources of continuous, emission, and absorption spectra ... direction as the absorbed photon, this gives rise to dark lines (absence of light) in the spectrum.

Absorption Spectra


When photons from the light source make their way through this gas, some of them can ... (Note that the dark lines in an absorption spectrum appear at exactly the ... the "continuous" spectrum of sunlight turns out to be an absorption spectrum.

What is Spectroscopy? - University of Arizona


Spectroscopy pertains to the dispersion of an object's light into its component colors (i.e. ... For a continuous spectrum, the light is composed of a wide, continuous ... With discrete spectra, one sees only bright or dark lines at very distinct and ... are called emission spectra, those with dark lines are termed absorption spect...

Emission and Absorption Lines


Today, we'll look at the processes by which emission and absorption lines are created. .... spectrum of the Sun shows many, many, MANY dark absorption lines: ... the photosphere -- absorb some of the continuous light coming from the hot, ...

spectrum: Continuous and Line Spectra - Infoplease


A dark-line, or absorption, spectrum is the reverse of a bright-line spectrum; it is produced when white light containing all frequencies passes through a gas not ...

Spectra in the Lab


Sep 27, 2005 ... The wavelengths of visible light are quite small: between 400 nm and 650 .... Absorption spectrum: dark lines superimposed on a continuous ...

absorption spectrum | physics | Britannica.com


...but has many dark lines, indicating that light is missing at certain wavelengths because of absorption. These dark lines, sometimes called Fraunhofer lines, are  ...

Production of Light - Astronomy Notes


Aug 20, 2007 ... When light is passed through a prism or a diffraction grating to ... and absorption lines (dark lines in an otherwise continuous spectrum) as ...

How Atoms Produce the Spectra - Astronomy Notes


Jun 10, 2010 ... An emission line is produced by an atom in a ``excited'' energy state---the ... The atom produces light of certain wavelengths. ... The more atoms undergoing a particular absorption transition, the darker (or ``stronger'') the absorption line. ... together to produce the rainbow of colors of a continuous...

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Absorption and Emission - NMSU Astronomy


A gas of hydrogen atoms will produce an absorption line spectrum if it is between ... of white light) directly, you would see a continuous spectrum, with no breaks.

What Is Spectroscopy - Cool Cosmos


Within this spectra, astronomers can study emission and absorption lines which are ... If you look more closely at the Sun's spectrum, you will notice the presence of dark lines. ... Production of Light - Nick Strobel's Astronomy Notes · Spectroscopy ... The shape of the continuous spectra (often refered to as the contin...

Absorption Line | COSMOS


The light that leaves the cloud (right) shows absorption lines in the spectrum at ... seen as dark lines, or lines of reduced intensity, on a continuous spectrum.