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The first tide predicting machine (TPM) was built in 1872 by the Légé Engineering Company. [11] A model of it was exhibited at the British Association meeting in 1873 [12] (for computing 8 tidal components), followed in 1875-76 by a machine on a slightly larger scale (for computing 10 tidal components), was designed by Sir William Thomson (who later became Lord Kelvin). [13]
Harmonic analysis is a branch of mathematics concerned with investigating the connections between a function and its representation in frequency. The frequency representation is found by using the Fourier transform for functions on unbounded domains such as the full real line or by Fourier series for functions on bounded domains, especially ...
A bumblebee with a transponder acting as a non-linear junction for tracking the animal by way of harmonic radar.. The non-linear junction detector, or an NLJD, is a device that illuminates a small region of space with high-frequency RF energy.
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N-th harmonic generation. Harmonic generation (HG, also called multiple harmonic generation) is a nonlinear optical process in which photons with the same frequency interact with a nonlinear material, are "combined", and generate a new photon with times the energy of the initial photons (equivalently, times the frequency and the wavelength divided by ).
The companies claimed, among other things, that the health warnings violated their free speech rights by compelling the companies to endorse the U.S. government's anti-smoking message through ...
Donald Trump is condemning the alleged actions of Luigi Mangione and the people who defend him.. In a Dec. 17 news conference, the president-elect, 78, denounced the man accused of killing ...
A special case is the degenerate OPO, when the output frequency is one-half the pump frequency, = = /, which can result in half-harmonic generation when signal and idler have the same polarization. The first optical parametric oscillator was demonstrated by Joseph A. Giordmaine and Robert C. Miller in 1965, [ 2 ] five years after the invention ...