Wave phenomena. Medical search. Frequent questions

We also find a time-domain where the particle density of the point source is governed by the propagation of a main wavefront, exhibiting an oscillating pattern similar to the diffraction in time phenomenon observed in non-relativistic systems. (arxiv.org)
These waves are damped in a few centimeters during their propagation from the sheath towards the bulk plasma. (dcu.ie)
A linear, uniformly stratified ocean model is used to investigate propagation of baroclinic Kelvin waves in a cylindrical basin. (mmnp-journal.org)
This book brings together several contributions from leading experts in the field of nonlinear wave propagation. (readabook.store)
The book will be a valuable resource for applied scientists interested in some of the most recent advances in the theory and in the applications of wave propagation, shock formation, nonequilibrium thermodynamics and energy methods. (readabook.store)
This thesis is concerned with the propagation of transient electromagnetic waves in nonlinear media. (lu.se)
Paper II gives a formulation of transient electromagnetic fields, that can be used to analyze wave propagation in homogeneous media. (lu.se)
Paper III analyzes the propagation of electromagnetic waves in a waveguide filled with an isotropic, nonlinear material. (lu.se)
The characteristics of light as a wave are frequency, wavelength, oscillation direction (polarisation), amplitude and speed of propagation. (lu.se)

An illustration showing the merger of two black holes and the gravitational waves that ripple outward. (iflscience.com)
Earlier this year, a team of over 1,000 scientists from across the globe announced the first discovery of gravitational waves and the first ever observation of colliding black holes. (iflscience.com)
Predicted by Albert Einstein, gravitational waves are tiny ripples in the fabric of spacetime caused by very heavy objects accelerating at very high speeds. (iflscience.com)
The first detection of gravitational waves by the LIGO Scientific Collaboration came from two black holes, each weighing about 30 times more than our sun, and travelling at approximately 60% the speed of light just prior to their collision. (iflscience.com)
The catastrophic collision occurred more than a billion light years from Earth, and released one solar mass of energy in gravitational waves. (iflscience.com)

We explore the dynamics of relativistic quantum waves in a potential step by using an exact solution to the Klein-Gordon equation with a point source initial condition. (arxiv.org)
The relative positions of these wavefronts are used to investigate the time-delay of quantum waves in the Klein-tunneling regime. (arxiv.org)
All optical phenomena coincide with quantum phenomena. (wikipedia.org)
This will deepen our understanding of quantum phenomena in systems that are not in equilibrium. (phys.org)
This new derivation provides fundamental limits that can be applied to various types of non-equilibrium quantum macroscopic phenomena," he says. (phys.org)
With my research, we strive to enhance the quantum efficiency of long wave infrared (LWIR) (8 µm to 12 µm) photodetectors by light trapping metastructures. (lu.se)
However, T2SL with cut-off wavelengths in the LWIR regime has weaker absorption compared to the mid-wave and short-wave T2SL, limiting the quantum efficiency of LWIR T2SL photodetectors. (lu.se)
In quantum mechanics the two distinctions are united: Light is a stream of particles and a wave. (lu.se)

The paper considers a below-cutoff waveguide serving as a coupling element between two other waveguides and calculates the cross-sectional size of the below-cutoff waveguide for which resonance phenomena are possible. (harvard.edu)

We show the model's ability to mimic a number of photospheric magnetic phenomena: the solar cycle (11-year) oscillations, the Waldmeier effect, unipolar magnetic regions (e.g. sectors and coronal holes), Maunder minima, and the march/rush to the poles involving the geometry of magnetic field reversals. (hindawi.com)

Optical phenomena are any observable events that result from the interaction of light and matter. (wikipedia.org)
Common optical phenomena are often due to the interaction of light from the Sun or Moon with the atmosphere, clouds, water, dust, and other particulates. (wikipedia.org)
A phenomenon that occurs in the interaction between two or more waves, that is, when waves meet, they amplify, attenuate or cancel each other out. (lu.se)
Because of this interaction, they exhibit several unusual phenomena, including so-called unconventional superconductivity, where the necessary electron pairs are conjectured not to be held together by lattice vibrations but by interactions between electrons themselves. (lu.se)

Physical phenomena such as refraction, diffraction and interference are explained by the wave model of light, but when explaining photoelectric, photochemical or photobiological processes, we use the photon model. (lu.se)

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For instance, rainbows are polarized, meaning that the direction of the electric vibration within the light wave determines its polarization. (atoptics.co.uk)

Many of the potential health effects of climate change are related to threats we already face, including heat waves, extreme weather events, and emerging infectious diseases. (cdc.gov)

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This phase difference leads to interference between the waves, affecting their intensities. (atoptics.co.uk)
The interference of waves is crucial in understanding the changing appearance of the primary rainbow with varying drop sizes. (atoptics.co.uk)
Understanding the wave behavior of light and the principles of interference helps explain these variations. (atoptics.co.uk)

The eﬀect of electron elastic collisions on plasma waves is also investigated. (dcu.ie)

Deformations and strains are carried forward through the material in form of stress disturbances that propagate from the impact location through the body as wave phenomena at a finite velocity distinctive to the material. (fraunhofer.de)
Besides that, an increase in the RF power and a decrease in the droplet size result in an increased surface acoustic wave(SAW) streaming velocity. (northumbria.ac.uk)
A theoretical description of low-velocity detonation (LVD) in liquid explosives has been developed, based upon a cavitation model of the phenomena. (cdc.gov)

There is evidence of wave emission with a frequency near the electron plasma frequency, i.e. ωpe , from the sheath region in collisionless capacitive radio-frequency (RF) discharges. (dcu.ie)

Paper IV deals with discontinuous electromagnetic waves, shock waves. (lu.se)
These conditions permit us to classify electromagnetic shock waves as slow, fast or intermediate shock waves. (lu.se)

for the Time parameter in the block dialog box, you get the Sine Wave Function block. (mathworks.com)
When operating in continuous mode, the Sine Wave block can become inaccurate due to loss of precision as time becomes very large. (mathworks.com)
To handle round-off errors when the Sine Wave block operates in time-based discrete mode, use one of these methods. (mathworks.com)
Set the sample time of the clock signal to the sample time of the Sine Wave block. (mathworks.com)
p is the number of time samples per sine wave period. (mathworks.com)
It was the first time that a rogue had been measured and provided scientific evidence that abnormal ocean waves really do exist. (phys.org)
With the help of enormous amounts of big data about ocean movements, researchers can predict the likelihood of being struck by a monster wave at sea at any given time. (phys.org)
Our analysis demonstrates that abnormal waves occur all the time. (phys.org)
At the same time a continuous climate anxiety has invaded many personal experiences in relation to nature environments and phenomena. (lu.se)
Our piece "Wave - exploring sound solastalgia" pinpoints the listener's internal conflict of something safe and calming, e.g. the sound of water, that at the same time may suggest something disastrous and dangerous - a raised sea level across the globe. (lu.se)
Time series analysis concerns the mathematical modeling of time varying phenomena, e.g., ocean waves, water levels in lakes and rivers, demand for electrical power, radar signals, muscular reactions, ECG-signals, or option prices at the stock market. (lu.se)

The General Introduction gives a broad overview of nonlinear electromagnetic phenomena. (lu.se)

There are many phenomena that result from either the particle or the wave nature of light. (wikipedia.org)
A physicist can describe light as both a wave and a particle, a photon. (lu.se)

That same team has now published a second gravitational-wave observation from another cataclysmic black hole death spiral, detected on Boxing Day, December 26, 2015. (iflscience.com)

This work aims to develop the relationship between overtopping phenomena and their impact costs through an approach that considers wave runup, corresponding overtopping events, their flow volume and related flooding costs. (mdpi.com)

The flowering of bamboos is an intriguing phenomenon, because it is a unique and very rare occurrence in the plant kingdom. (amusingplanet.com)
Using 700 years' worth of wave data from more than a billion waves, scientists at the University of Copenhagen and University of Victoria have used artificial intelligence to find a formula for how to predict the occurrence of these maritime monsters. (phys.org)

Interictal discharges may be divided morphologically into sharp waves, spikes, spike-wave complexes (also called spike-and-slow-wave complexes), and polyspike-wave complexes (also called multiple-spike-and-slow-wave-complexes). (medscape.com)
Electroencephalogram demonstrating polyspike and wave discharges seen in juvenile myoclonic epilepsy. (medscape.com)
Electroencephalogram demonstrating polyspike and wave discharges, which can be seen in idiopathic generalized epilepsy. (medscape.com)

This paper reports the numerical simulation and experimental characterization of three-dimensional acoustic streaming behavior of a liquiddroplet subjected to a Rayleigh surface acoustic wave. (northumbria.ac.uk)

Our calcu- lation shows that these waves are electron plasma waves. (dcu.ie)

ignited by the movement of the waves, they make the water glow like a star-filled sky. (onet.pl)

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VALENCIA, Calif. , Aug. 23, 2023 /PRNewswire/ - Cunard has raised the anchor on an exciting collaboration with pop art phenomenon Mr. Brainwash as the luxury cruise line continues to champion artistic excellence at sea. (igpbeauty.com)

Not knowing how to really categorize these brain wave signals that it is intercepting, it searches memory and finds similar brain waves and that creates visual imagery of your friend. (unexplained-mysteries.com)

To understand this phenomenon, we need to consider the wave behavior of light. (atoptics.co.uk)

The unusually large size of the Moon as it rises and sets, the Moon illusion The shape of the sky, the sky bowl Some phenomena are yet to be conclusively explained and may possibly be some form of optical phenomena. (wikipedia.org)
However, they aren't all monster waves of extreme size," explains Johannes Gemmrich, the study's second author. (phys.org)

These phenomena occur under extreme conditions (i.e. higher J˜0 than in typical experiments) for sinusoidal current waveforms, but similar eﬀects may occur with non-sinusoidal pulsed wave- forms for conditions of experimental interest, because the rate of change of current is a relevant parameter. (dcu.ie)
Since then, these extreme waves have been the subject of much study. (phys.org)
The researchers analyzed the many types of data to find the causes of rogue waves, defined as being waves that are at least twice as high as the surrounding waves-including extreme rogue waves that can be over 20 meters high. (phys.org)

The amplitude of the wave increases with increasing RF current density amplitude J˜0 until some maximum is reached, beyond which the wave diminishes and a new regime appears. (dcu.ie)
A is the amplitude of the sine wave. (mathworks.com)

Or imaginary gravitational phenomena, as the case may be. (scienceblogs.com)
The analysis is applied to the case of obliquely incident waves on a semi-infinite, bianisotropic, nonlinear medium. (lu.se)
The Chapman-Jouguet (C-J) condition of classical detonation theory has been extended to this case where precursor wave effects are important. (cdc.gov)

The source free Maxwell equations are treated as an eigenvalue problem, from which we deduce the propagating waves and their wave speeds. (lu.se)

One of these phenomena is based on the coupling between light and collective charge oscillations in a conductor, called surface plasmon polaritons (SPP). (lu.se)

As newly-independent states sought support during the era of decolonisation, the phenomenon of democratisation marked a significant impact on the United Nations. (lu.se)

This is equivalent to around one monster wave occurring every day at any random location in the ocean. (phys.org)
That is, the amount of gravitational-wave energy released during the merger was equivalent to obliterating the sun, and converting it into pure energy. (iflscience.com)

And now, researchers from the University of Copenhagen's Niels Bohr Institute have used AI methods to discover a mathematical model that provides a recipe for how-and not least when-rogue waves can occur. (phys.org)
This paper describes the methods used to study the tone and some related phenomena of the language of the Gavião of Rondônia, Brazil, which is part of the Mondé branch of the Tupi family. (hawaii.edu)

But over the course of just one day, Harriet Tubman and her place on our money came to represent the eternal timeline of Internet phenomena, a never-ending cycle of a good thing becoming bad, a real thing becoming fake, something innocuous turning toxic. (wypr.org)

The light waves are literally cancelling each other out, and making the pupil area appear black. (sciforums.com)
When light couple to SPPs at a metal-dielectric interface, the wave propagates along the interface. (lu.se)

In the study, we mapped the causal variables that create rogue waves and used artificial intelligence to gather them in a model which can calculate the probability of rogue wave formation," says Dion Häfner. (phys.org)

By setting saturation limits on the Sine Wave block output, you can remove overshoot due to accumulation of round-off errors. (mathworks.com)
In essence, it is shown that coupling of rate processes through a precursor wave limits the number of Hugoniot adiabat states that are accessible. (cdc.gov)

Dion Häfner defending his Ph.D. thesis An Ocean of Data-Inferring the Causes of Real-World Rogue Waves at the Niels Bohr Institute, University of Copenhagen. (phys.org)

This is fantastic news for gravitational-wave astronomers. (iflscience.com)

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First and foremost, it tells us that the future of gravitational-wave astronomy will be rich with scientific discoveries. (iflscience.com)

The newly introduced category recognises the contribution of OTT streamers to making K-content a global phenomenon. (forevernews.in)

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The behaviour of a wave motion at a sharp edge or gap. (lu.se)

This way, you can build models with sine wave sources that are purely discrete, rather than models that are hybrid continuous/discrete systems. (mathworks.com)
Visiting Scientist, Center for Nonlinear Phenomena and Complex Systems, Université Libre de Bruxelles, Belgium. (imperial.ac.uk)
Popular media discourses and heated debates on possible transitions to plant-based food systems can sometimes give the impression that veganism is a newfangled trend or that advocacy for animals is an intrinsically Western or even 'white' social phenomenon. (lu.se)

When combined, this data-from more than a billion waves-contains 700 years' worth of wave height and sea state information. (phys.org)

These movements in the severely affected infant may represent brain stem release phenomena. (medscape.com)

As a result, Anies's euphoria appears omnipresent, like a raging wave. (kbanews.com)

The Marine Observers' Log Wikimedia Commons has media related to Optical phenomena. (wikipedia.org)
But then there was a second, more critical, wave of social media reaction. (wypr.org)

It is shown that in order for these waves to be stable, they must satisfy a number of conditions, similar to Lax's classical shock conditions. (lu.se)

Anatomy34

Organisms11

Diseases11

Chemicals and Drugs19

Analytical, Diagnostic and Therapeutic Techniques and Equipment62

Psychiatry and Psychology9

Phenomena and Processes102

Disciplines and Occupations10

Technology, Industry, Agriculture3

Humanities1

Information Science13

Health Care23

Propagation9

Gravitational waves5

Quantum8

Waveguide1

Solar1

Interaction4

Diffraction1

Vibration6

Heat waves1

Nonlinear wave4

Interference3

Elastic1

Velocity3

Frequency1

Shock waves2

Time11

Electromagnetic1

Particle2

Cataclysmic1

Flow1

Occurrence2

Discharges3

Simulation1

Electron1

Water1

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Creates1

Behavior1

Size2

Extreme3

Amplitude2

Case3

Speeds1

Collective1

Impact1

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Methods2

Internet1

Light2

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