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> The findings could have implications for how offshore structures are designed, weather forecasting and climate modeling, while also affecting our fundamental
by westurner 2y ago
> The findings could have implications for how offshore structures are designed, weather forecasting and climate modeling, while also affecting our fundamental understanding of several ocean processes.
Does this translate to terrestrial and deep space signals? FWIU there's research in rogue waves applied to EM waves and DSN, too
What is the lowest power [parallel] transmission that results in such rogue wave effects, with consideration for local RF regulations?
> Professor Ton van den Bremer, a researcher from TU Delft, says the phenomenon is unprecedented, "Once a conventional wave breaks, it forms a white cap, and there is no way back. But when a wave with a high directional spreading breaks, it can keep growing."
> Three-dimensional waves occur due to waves propagating in different directions. The extreme form of this is when wave systems are "crossing," which occurs in situations where wave system meet or where winds suddenly change direction, such as during a hurricane. The more spread out the directions of these waves, the larger the resulting wave can become.
ScholarlyArticle: "Three-dimensional wave breaking" (2024)
https://www.nature.com/articles/s41586-024-07886-z https://www.nature.com/articles/s41586-024-07886-z
Rogue wave >
21st century, Other uses of the term "rogue wave": https://en.wikipedia.org/wiki/Rogue_wave https://en.wikipedia.org/wiki/Rogue_wave
' > See also links to Branched flow and Resonance
Branched flow: https://en.wikipedia.org/wiki/Branched_flow https://en.wikipedia.org/wiki/Branched_flow :
> Branched flow refers to a phenomenon in wave dynamics, that produces a tree-like pattern involving successive mostly forward scattering events by smooth obstacles deflecting traveling rays or waves. Sudden and significant momentum or wavevector changes are absent, but accumulated small changes can lead to large momentum changes. The path of a single ray is less important than the environs around a ray, which rotate, compress, and stretch around in an area preserving way.
Are vortices in Compressible and Incompressible fluids area preserving?
(Which brings us to fluid dynamics and superhydrodynamics or better i.e. superfluid quantum gravity with Bernoulli and navier-stokes, and vortices of curl, and gravity (maybe with gravitons) if the particles are massful, otherwise we call it "radiation pressure" and "solar wind" and it also causes relative displacement)
Resonance:
https://en.wikipedia.org/wiki/Resonance https://en.wikipedia.org/wiki/Resonance :
> For an oscillatory dynamical system driven by a time-varying external force, resonance occurs when the frequency of the external force coincides with the natural frequency of the system.
- westurner 2y ago> superfluid quantum gravity with Bernoulli's and Navier-Stokes, and vortices of curl And Gross-Pitaevskii
- rocqua 2y agoI doubt this is relevant for EM waves. Water waves are much more complicated because the wave speed in water is highly frequency dependent. That makes things much harder to model. Whilst in optics (and thus EM) people have been reasoning in terms of wavefronts in 3d for about half a century. Look at a YouTube channel like Huygens optics to see what a former professional can easily do in his shed.
- westurner 2y agoPhoton waves are EM waves and particles, by the Particle-Wave Duality. Photons behave like fluids in superfluids; "liquid light". Also, the paths of photons are affected by the media of transmission: gravity, gravitational waves, and water fluid waves bend light. Photonic transmission and retransmission occurs at least in part by phononic excitation of solids and fluids; but in the vacuum of space if there is no mass, how do quanta propagate? Optical rogue waves > Principles: https://en.wikipedia.org/wiki/Optical_rogue_waves https://en.wikipedia.org/wiki/Optical_rogue_waves : > Supercontinuum generation with long pulses: Supercontinuum generation is a nonlinear process in which intense input light, usually pulsed, is broadened into a wideband spectrum. The broadening process can involve different pathways depending on the experimental conditions, yielding varying output properties. Especially large broadening factors can be realized by launching narrowband pump radiation (long pulses or continuous-wave radiation) into a nonlinear fiber at or near its zero-dispersion wavelength or in the anomalous dispersion regime. Such dispersive characteristics support modulation instability, which amplifies input noise and forms Stokes and anti-Stokes sidebands around the pump wavelength. This amplification process, manifested in the time domain as a growing modulation on the envelope of the input pulse, then leads to the generation of high-order solitons, which break apart into fundamental solitons and coupled dispersive radiation FWIU photonic superradiance is also due to critical condition(s). Re: Huygens and photons; https://news.ycombinator.com/item?id=40492160 https://news.ycombinator.com/item?id=40492160 : >> This means that hard-to-measure optical properties such as amplitudes, phases and correlations—perhaps even these of quantum wave systems—can be deduced from something a lot easier to measure: light intensity [given Huygens' applied] TODO: remember the name of the photonic effect of self-convolution and nonlinearity and how the wave function interferes with itself in the interval [0,1.0] whereas EM waves are [-1,1] or log10 [-inf, inf]. Coherence, Wave diffraction vs. wave interference > Superposition principle: https://en.wikipedia.org/wiki/Superposition_principle#Wave_diffraction_vs._wave_interference https://en.wikipedia.org/wiki/Superposition_principle#Wave_d...