When.com Web Search

Search results

1. Results From The WOW.Com Content Network

2. Langmuir (unit) - Wikipedia

   en.wikipedia.org/wiki/Langmuir_(unit)

   The langmuir (symbol: L) is a unit of exposure (or dosage) to a surface (e.g. of a crystal) and is used in ultra-high vacuum (UHV) surface physics to study the adsorption of gases. It is a practical unit, and is not dimensionally homogeneous , and so is used only in this field.

3. Langmuir adsorption model - Wikipedia

   en.wikipedia.org/wiki/Langmuir_adsorption_model

   The Freundlich isotherm is the most important multi-site adsorption isotherm for rough surfaces. =, where α F and C F are fitting parameters. [14] This equation implies that if one makes a log–log plot of adsorption data, the data will fit a straight line. The Freundlich isotherm has two parameters, while Langmuir's equations has only one ...

4. Hertz–Knudsen equation - Wikipedia

   en.wikipedia.org/wiki/Hertz–Knudsen_equation

   The Hertz–Knudsen equation describes the non-dissociative adsorption of a gas molecule on a surface by expressing the variation of the number of molecules impacting on the surfaces per unit of time as a function of the pressure of the gas and other parameters which characterise both the gas phase molecule and the surface: [1] [2]

5. Light-emitting diode therapy - Wikipedia

   en.wikipedia.org/wiki/Light-emitting_diode_therapy

   The history of light therapy can be traced back to ancient Egypt and India, where therapy with natural sunlight was first used to treat leucoderma. [3] In the 1850s, Florence Nightingale's advocacy of exposure to clean air and sunlight for health restoration also contributed to the initial development of light therapy for treatments. [4]

6. Langmuir–Blodgett trough - Wikipedia

   en.wikipedia.org/wiki/Langmuir–Blodgett_trough

   The idea of a Langmuir–Blodgett (LB) film was first proven feasible in 1917 when Irving Langmuir (Langmuir, 1917) showed that single water-surface monolayers could be transferred to solid substrates. 18 years later, Katharine Blodgett made an important scientific advance when she discovered that several of these single monolayer films could be stacked on top of one another to make multilayer ...

7. Plasma oscillation - Wikipedia

   en.wikipedia.org/wiki/Plasma_oscillation

   Plasma oscillations, also known as Langmuir waves (after Irving Langmuir), are rapid oscillations of the electron density in conducting media such as plasmas or metals in the ultraviolet region. The oscillations can be described as an instability in the dielectric function of a free electron gas. The frequency depends only weakly on the ...