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The Rydberg–Ritz combination principle is an empirical rule proposed by Walther Ritz in 1908 to describe the relationship of the spectral lines for all atoms, as a generalization of an earlier rule by Johannes Rydberg for the hydrogen atom and the alkali metals.
chemical database small molecules "ChemDB". 5,000,000 ChemExper Chemexper Chemical Directory catalogue chemicals CASno Structure SMILES "ChemExper". Chemxpert Database Chemxpert Chemical Database small molecules database buyers,suppliers "ChemxpertDB". 10,00000 Chemical Book East West University: commercially available compounds
MyriMatch is a database search program developed at the Vanderbilt University Medical Center designed to run in a single-computer environment or across an entire cluster of processing nodes. [10] NIST Mass Spectral Search v.3.0 Commercial Program
Lyman-alpha, typically denoted by Ly-α, is a spectral line of hydrogen (or, more generally, of any one-electron atom) in the Lyman series.It is emitted when the atomic electron transitions from an n = 2 orbital to the ground state (n = 1), where n is the principal quantum number.
The analysis of line intensity ratios is an important tool to obtain information about laboratory and space plasmas. In emission spectroscopy, the intensity of spectral lines can provide various information about the plasma (or gas) condition. It might be used to determine the temperature or density of the plasma. Since the measurement of an ...
5 Spectral data. 6 References. Toggle the table of contents. Acetaldehyde (data page) ... "NIST Standard Reference Database". National Institute of Standards and ...
Spectral data UV-Vis ... "NIST Standard Reference Database". National Institute of Standards and Technology. doi:10.18434/T4D303 cite journal}}: Cite ...
6 Spectral data. Toggle Spectral data subsection. 6.1 UV Absorbance Spectroscopy of Aniline. 7 Regulatory data. 8 References. ... "NIST Standard Reference Database ...
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