light of a specific wavelength in a spectrum.
An especially dark or bright line present in an electromagnetic spectrum that represents the absorption or emission of energy at a particular wavelength. Dark lines are called absorption lines because they represent the absorption of energy, and bright lines are called emission lines because they represent the emission of energy. The study of spectral lines is called spectroscopy.
a dark or bright line in an otherwise uniform and continuous spectrum The optical spectrum (light or visible spectrum) is the portion of the electromagnetic spectrum that is visible to the human eye
Radiation at a particular wavelength of light produced by the emission or absorption of energy by an atom.
A dark or bright line at a specific wavelength in a spectrum.
A narrow range of spectral color, emitted (or absorbed) by a specific atom (or molecule).The energy of its photon corresponds to the difference between two energy levels of the atom, and such photons are emitted when the atom "falls" from the higher level to the lower one.
A spectral line is a bright or dark line found in the spectrum of some radiant source. Bright lines indicate emission, dark lines indicate absorption. A bright spectral line represents light emitted at a specific frequency by an atom or molecule. Each different element and molecule gives off light at a unique set of frequencies. Astronomers can determine the composition of gases in stars by looking for characteristic frequencies (this is called spectroscopy). For example, carbon monoxide (CO) has a spectral line at 115 Gigahertz (equal to a wavelength of 2.7 mm).
Any of a number of lines corresponding to definite wavelengths of an atomic emission or absorption spectrum; represents the energy difference between two energy levels.
Light given off at a specific frequency by an atom or molecule. Every different type of atom or molecule gives off light at its own unique set of frequencies. Thus, astronomers can look for gas containing a particular atom or molecule by tuning the telescope to one of the gas's characteristic frequencies. For example, carbon monoxide (CO) has a spectral line at 115 Gigahertz (or a wavelength of 2.7 mm).
A line in a spectrum due to the emission or absorption of electromagnetic radiation at a discrete wavelength. Spectral lines result from discrete changes in the energy of an atom or molecule. Different atoms or molecules can be identified by the unique sequence of spectral lines associated with them. more
A particular wavelength of light corresponding to an energy transition in an atom.
A radiative feature observed in emission (bright) or absorption (dark) at a specific frequency or wavelength.
A bright, or dark, line found in the spectrum of some radiant source. The wavelength location of the line is controlled by the physics of the emission (bright line) or absorption (dark line) process involved. See absorption line, emission line.
In a spectrum, an emission (bright) or absorption (dark) at a specific frequency or wavelength.
A spectral line is a dark or bright line in an otherwise uniform and continuous spectrum, resulting from an excess or deficiency of photons in a narrow frequency range, compared with the nearby frequencies.