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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 ...

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, ...

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.

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 ...

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 electron is not in as low an energy orbit as possible. ... The atom produces light of certain wavelengths. ... The photon is absorbed and electron moves to E2. ... together to produce the rainbow of colors of a continuous spectrum.

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.

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 ...