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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.
A spectral line is a discrete wavelength of light emitted or absorbed by atoms, ions or molecules. Learn about the physics, history and uses of spectral lines in various fields of science, such as spectroscopy, astronomy and mass spectrometry.
Apr 10, 2022 · Explain how emission line spectra and absorption line spectra are formed; Describe what ions are and how they are formed; Explain how spectral lines and ionization levels in a gas can help us determine its temperature; We can use Bohr’s model of the atom to understand how spectral lines are formed.
A spectral line is like a fingerprint that can be used to identify the atoms, elements or molecules present in a star, galaxy or cloud of interstellar gas. If we separate the incoming light from a celestial source using a prism, we will often see a spectrum of colours crossed with discrete lines.
Oct 3, 2016 · Learn about the selection rules, intensities, transition probabilities, values, and line strengths of spectral lines in atomic spectroscopy. Find numerical tables, conversion relations, and sources of spectroscopic data.
When light passes through gas in the atmosphere some of the light at particular wavelengths is scattered resulting in darker bands. These lines came to be known as ‘spectral lines’ and were cataloged by heating common elements until they produced light and measuring the wavelengths emitted.
A spectral line is light of a single frequency, or wavelength, which is emitted (or absorbed) by an atom when an electron changes its energy level. Because the energy levels of electrons vary from element to element, scientists can determine the chemical composition of an object from a distance by examining its spectrum.
