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Spectral line - Wikipedia


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 ...

What is Spectroscopy? - University of Arizona


Spectroscopy pertains to the dispersion of an object's light into its component colors ... 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 spectra. ... Continuous spectra arise from dense gases or solid objects which radiate ...

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 Line | COSMOS

astronomy.swin.edu.au/cosmos/A/absorption line

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.

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...

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, ...

What is Spectroscopy? - Infrared Spectroscopy in Astronomy


Within this spectra, astronomers can study emission and absorption lines ... The light is spread out into a continuous band with every wavelength having ... If you look more closely at the Sun's spectrum, you will notice the presence of dark lines  ...

Emission and absorption lines


When this light is decomposed using a prism it is found to be made up of a series of ``lines'', that is, the output from the prism is not a smooth spectrum of colors, ...

Kirchoff's Law and Spectroscopy | Astronomy 801: Planets, Stars ...


A low density, cool gas in front of a hotter source of a continuous spectrum creates a DARK LINE or ABSORPTION LINE spectrum. You can also summarize  ...

The Basics of Light - Physics & Astronomy


Simply stated, light is nature's way of transferring energy through space. ... no hard boundaries in the electromagnetic spectrum--just a continuous range of energy. .... star's atmosphere (or outer layers) absorb the stars light, leaving dark lines.

More Info

Chapter 2, Section 5


Figure 2.12 Emission Spectrum Instead of a continuous spectrum, the light from ... of dark absorption lines superimposed on a bright continuous spectrum. Here ...

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.

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 ...