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A windpump replaced by a solar-powered pump at a water hole in the Augrabies Falls National Park. [Notes 1] This solar water pump up to 3.7 kW is useful for farmers.Solar-powered pumps run on electricity generated by photovoltaic (PV) panels or the radiated thermal energy available from collected sunlight as opposed to grid electricity- or diesel-run water pumps. [1]
Hendrik Antoon Lorentz (/ ˈ l ɒr ən t s /, LORR-ənts; Dutch: [ˈɦɛndrɪk ˈloːrɛnts]; 18 July 1853 – 4 February 1928) was a Dutch theoretical physicist who shared the 1902 Nobel Prize in Physics with Pieter Zeeman for his theoretical explanation of the Zeeman effect.
The model is named after the Dutch physicist Hendrik Antoon Lorentz. It is a classical , phenomenological model for materials with characteristic resonance frequencies (or other characteristic energy scales) for optical absorption, e.g. ionic and molecular vibrations , interband transitions (semiconductors), phonons , and collective excitations.
The shape of lines in a nuclear magnetic resonance (NMR) spectrum is determined by the process of free induction decay. This decay is approximately exponential, so the line shape is Lorentzian. [11] This follows because the Fourier transform of an exponential function in the time domain is a Lorentzian in the frequency domain.
The theory of special relativity plays an important role in the modern theory of classical electromagnetism.It gives formulas for how electromagnetic objects, in particular the electric and magnetic fields, are altered under a Lorentz transformation from one inertial frame of reference to another.
[Ashcroft & Mermin 10] The model was extended in 1905 by Hendrik Antoon Lorentz (and hence is also known as the Drude–Lorentz model) [7] to give the relation between the thermal conductivity and the electric conductivity of metals (see Lorenz number), and is a classical model.