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  2. Harmonic balance - Wikipedia

    en.wikipedia.org/wiki/Harmonic_balance

    Harmonic balance is a method used to calculate the steady-state response of nonlinear differential equations, [1] and is mostly applied to nonlinear electrical circuits. [2] [3] [4] It is a frequency domain method for calculating the steady state, as opposed to the various time-domain steady-state methods.

  3. Spectrochemistry - Wikipedia

    en.wikipedia.org/wiki/Spectrochemistry

    Spectrochemistry is the application of spectroscopy in several fields of chemistry. It includes analysis of spectra in chemical terms, and use of spectra to derive the structure of chemical compounds, and also to qualitatively and quantitively analyze their presence in the sample.

  4. History of spectroscopy - Wikipedia

    en.wikipedia.org/wiki/History_of_spectroscopy

    Laser spectroscopic techniques have been used for many different applications. One example is using laser spectroscopy to detect compounds in materials. One specific method is called Laser-induced Fluorescence Spectroscopy, and uses spectroscopic methods to be able to detect what materials are in a solid, liquid, or gas, in situ. This allows ...

  5. Kirchhoff's laws - Wikipedia

    en.wikipedia.org/wiki/Kirchhoff's_laws

    Kirchhoff's laws, named after Gustav Kirchhoff, may refer to: Kirchhoff's circuit laws in electrical engineering; Kirchhoff's law of thermal radiation; Kirchhoff equations in fluid dynamics; Kirchhoff's three laws of spectroscopy; Kirchhoff's law of thermochemistry; Kirchhoff's theorem about the number of spanning trees in a graph

  6. Spectroscopy - Wikipedia

    en.wikipedia.org/wiki/Spectroscopy

    Nuclear spectroscopy are methods that use the properties of specific nuclei to probe the local structure in matter, mainly condensed matter, molecules in liquids or frozen liquids and bio-molecules. Quantum logic spectroscopy is a general technique used in ion traps that enables precision spectroscopy of ions with internal structures that ...

  7. Gustav Kirchhoff - Wikipedia

    en.wikipedia.org/wiki/Gustav_Kirchhoff

    Gustav Robert Kirchhoff (German: [ˈgʊs.taf ˈkɪʁçhɔf]; 12 March 1824 – 17 October 1887) was a German physicist, chemist and mathematican who contributed to the fundamental understanding of electrical circuits, spectroscopy and the emission of black-body radiation by heated objects.

  8. Determination of equilibrium constants - Wikipedia

    en.wikipedia.org/wiki/Determination_of...

    There are four main experimental methods. For less commonly used methods, see Rossotti and Rossotti. [1] In all cases the range can be extended by using the competition method. An example of the application of this method can be found in palladium(II) cyanide.

  9. Transport phenomena - Wikipedia

    en.wikipedia.org/wiki/Transport_phenomena

    Newton's law of viscosity is the simplest relationship between the flux of momentum and the velocity gradient. It may be useful to note that this is an unconventional use of the symbol τ zx ; the indices are reversed as compared with standard usage in solid mechanics, and the sign is reversed.