The breakthrough that explained line spectra is credited to Neils Bohr in 1913. Building on the ideas of Planck and Einstein, Bohr postulated that the energy levels of atoms belong to a discrete set of values En, rather than a continuum as in classical mechanics. When an atom makes a ...
Google Share on Facebook spectral line Medical Encyclopedia Wikipedia Related to spectral line:Spectral linewidth n. An isolated bright or dark line in a spectrum produced by emission or absorption of light of a single wavelength. American Heritage® Dictionary of the English Language, Fifth Edition...
How does quantum theory explain the line spectra of atoms? Answer and Explanation: German physicist Max Planck transformed physics in 1900 with his discovery that energy is released in separate packets known as quanta and does not... Learn more about this topic: ...
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When the neutral pressure increases to 15 Pa, the line spectra from highly excited helium atoms were clearly observed. The electron temperature estimated from these line spectral intensities is about 0.05 eV, which indicates that the electron density reduction is caused by volumetric recombination ...
The spectra consist of sharp lines and broad bands. The broad bands are due to the characteristic Tl + emission. The sharp lines coincide in energy with emission lines from electronic transitions of isolated neutral potassium atoms. The production of the excited state potassium atoms was found to...
Particularly, specific combinations of RF and pulsed-field-gradient sequences need to be developed so that PASS or PHORMAT spectra can be obtained of a select volume in the sample or the animal rather than the whole sample or the main part of the body. If these implementations are successful...
Emission spectra are analyzed by passing light through a prism. The prism causes the different wavelengths of light to be separated. By looking at which wavelengths of light are seen, it is possible to determine what elements created the emission spectrum.Atomic...
Spectral Properties from Lyα to Hα for an Essentially Complete Sample of Quasars. I. Data We have obtained quasi-simultaneous ultraviolet-optical spectra for 22 out of 23 quasars in the complete PG-X-ray sample with redshift, z<0.4, and M_B<-23... Z Shang,BJ Wills,D Wills,......
line spectrum - a spectrum in which energy is concentrated at particular wavelengths; produced by excited atoms and ions as they fall back to a lower energy level mass spectrum - a distribution of ions as shown by a mass spectrograph or a mass spectrometer microwave spectrum - the part of th...