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Method in the dynamics of blood flow
Wave intensity analysis provides a method to calculate the properties of arterial waves that give rise to arterial blood pressure, based on measurements
Wave_intensity_analysis
Tool for determining arterial narrowing
of concept study that demonstrated that the wave-free period, usually isolated using wave-intensity analysis, could be reliably determined using a pressure-only
Instantaneous_wave-free_ratio
Power carried by sound waves
Sound intensity, also known as acoustic intensity, is defined as the power carried by sound waves per unit area in a direction perpendicular to that area
Sound_intensity
Measure of arterial stiffness
KH (February 2009). "Forward and backward waves in the arterial system: impedance or wave intensity analysis?". Medical & Biological Engineering & Computing
Pulse_wave_velocity
Exercise strategy
High-intensity interval training (HIIT) is a training protocol alternating short periods of intense or explosive anaerobic exercise with brief recovery
High-intensity interval training
High-intensity_interval_training
Medical condition
Pulsus Bisferiens in Severe Aortic Regurgitation: Insights from Wave Intensity Analysis". Artery Research. 21: 9–12. doi:10.1016/j.artres.2017.12.002.
Pulsus_bisferiens
Mechanism that maintains blood pressure between heart beats
AD, Parker KH, Wang JJ (February 2009). "Wave intensity analysis and the development of the reservoir-wave approach". Medical & Biological Engineering
Windkessel_effect
Seismic intensity scale used to quantify the degree of shaking during earthquakes
The Modified Mercalli intensity scale (MM, MMI, or MCS) measures the effects of an earthquake at a given location. This is in contrast with the seismic
Modified Mercalli intensity scale
Modified_Mercalli_intensity_scale
Method of market analysis
The Elliott wave principle, or Elliott wave theory, is a form of technical analysis that helps financial traders analyze market cycles and forecast market
Elliott_wave_principle
Series of water waves
process repeats with succeeding waves. As with earthquakes, several attempts have been made to set up scales of tsunami intensity or magnitude to allow comparison
Tsunami
Geologic events off the Alaska coast
06:15:58 UTC) with a moment magnitude of 7.8 to 8.3 and a maximum Mercalli intensity of XI (Extreme). The strike-slip earthquake took place on the Fairweather
1958 Lituya Bay earthquake and megatsunami
1958_Lituya_Bay_earthquake_and_megatsunami
Ultrasonic, non-invasive, outpatient treatment
salivary stones, and pancreatic stones. Lithotripsy uses high-intensity acoustic waves (HI-EWST). The patient is usually sedated or anesthetized in order
Extracorporeal shockwave therapy
Extracorporeal_shockwave_therapy
Method of analysis applied to problems wave propagation
such, the Huygens–Fresnel principle is a method of analysis applied to problems of luminous wave propagation both in the far-field limit and in near-field
Huygens–Fresnel_principle
Potential for two waves to interfere
{c} }} , one would manually time-average the intensity. In some systems, such as water waves or optics, wave-like states can extend over one or two dimensions
Coherence_(physics)
Audible vibration that travels via pressure waves in matter
Intensity Speed of sound Direction Sometimes speed and direction are combined as a velocity vector; wave number and direction are combined as a wave vector
Sound
Physical model of propagating energy
particle natures of electromagnetic waves, such as the self-interference of a single photon. When a low intensity light is sent through an interferometer
Electromagnetic_radiation
Distance over which a wave's shape repeats
that a wave travels through. Examples of waves are sound waves, light, water waves, and periodic electrical signals in a conductor. A sound wave is a variation
Wavelength
Physics experiment
called wave-particle duality, made it necessary to go beyond classical physics and take into account the quantum nature of light. A low-intensity double-slit
Double-slit_experiment
Type of seismic wave
continuum mechanics, a P wave (primary wave or pressure wave) is one of the two main types of elastic body waves or seismic waves. P waves travel faster than
P_wave
Method of digital signal processing
Geometric phase analysis is a method of digital signal processing used to determine crystallographic quantities such as d-spacing or strain from high-resolution
Geometric_phase_analysis
electromagnetic wave has both an electric and a magnetic component (electric field and magnetic field), and it is often convenient to express the intensity of the
High-intensity_radiated_field
Scattering of a radiation wave as it travels through a complex medium
exact backscattering where the average intensity is enhanced. This phenomenon is the result of many sinusoidal two-wave interference patterns which add up
Coherent_backscattering
Monochrome light beam whose amplitude envelope is a Gaussian function
constant η is the wave impedance of the medium in which the beam is propagating. For free space, η = η0 ≈ 377 Ω. I0 = |E0|2/2η is the intensity at the center
Gaussian_beam
Sudden movement of the Earth's crust
release of energy in the lithosphere that creates seismic waves. Earthquakes can range in intensity, from those so weak they cannot be felt, to those violent
Earthquake
Electron diffraction by reflection from surfaces
through analysis of the diffraction patterns. Figure 2 shows a RHEED pattern. Video 1 depicts a metrology instrument recording the RHEED intensity oscillations
Reflection high-energy electron diffraction
Reflection_high-energy_electron_diffraction
Emission of electrons when electromagnetic radiation hits a material
continuous light waves transfer energy to electrons, which would then be emitted when they accumulate enough energy. An alteration in the intensity of light would
Photoelectric_effect
Aspect of relativity in physics
Gravitational Waves (NANOGrav) uses data collected by the Arecibo Radio Telescope, Green Bank Telescope, Very Large Array, and the Canadian Hydrogen Intensity Mapping
Gravitational_wave
Measure of the strength of earthquakes
subjective assessment of the intensity of shaking observed near the epicenter of the earthquake, categorized by various seismic intensity scales such as the Rossi–Forel
Richter_scale
Unusual, severe or unseasonal weather
recorded weather history. The main types of extreme weather include heat waves, cold waves, droughts, and heavy precipitation or storm events, such as tropical
Extreme_weather
Far-field diffraction
wave at normal incidence. The width of the slit is W. The Fraunhofer diffraction pattern is shown in the image together with a plot of the intensity vs
Fraunhofer_diffraction
found at a liquid-solid interface, this wave is also referred to as a Scholte wave. The wave is of maximum intensity at the interface and decreases exponentially
Stoneley_wave
Interference phenomenon of waves
diffraction pattern of a plane wave incident on a circular aperture is known as the Airy disk. The Airy disk has the following intensity distribution as a function
Diffraction
Scientific instrument using light waves for image viewing
for measuring the interference properties of light waves Photometer for measuring light intensity Polarimeter for measuring dispersion or rotation of
Optical_instrument
Analysis of the dimensions of different physical quantities
In engineering and science, dimensional analysis of different physical quantities is the analysis of their physical dimension or quantity dimension, defined
Dimensional_analysis
Medical intervention
Low-intensity pulsed ultrasound (LIPUS) is a technology that can be used for therapeutic purposes. It exploits low intensity and pulsed mechanical waves in
Low-intensity pulsed ultrasound
Low-intensity_pulsed_ultrasound
Luminescence induced by sound waves
in 1934 at the University of Cologne. It occurs when a sound wave of sufficient intensity induces a gaseous cavity within a liquid to collapse quickly
Sonoluminescence
Measure of change in a periodic variable
the intensity of the wave. For electromagnetic radiation, the amplitude of a photon corresponds to the changes in the electric field of the wave. However
Amplitude
Proposed economic wave of 15–25 years
Korotayev, Andrey V., & Tsirel, Sergey V. A Spectral Analysis of World GDP Dynamics: Kondratieff Waves, Kuznets Swings, Juglar and Kitchin Cycles in Global
Kuznets_swing
Technique for determining size distribution of particles
the autocorrelation function at a particular wave vector, q, and delay time, τ, and I is the intensity. The angular brackets ⟨ ⋅ ⟩ {\displaystyle \langle
Dynamic_light_scattering
Astronomy organization
describes the five-year data release, analysis, and first NANOGrav limit on the stochastic gravitational wave background. It was followed by the nine-year
North American Nanohertz Observatory for Gravitational Waves
North_American_Nanohertz_Observatory_for_Gravitational_Waves
Prolonged period of excessively hot weather
very cold days. There are fewer cold waves. Experts can often attribute the intensity of individual heat waves to global warming. Some extreme events
Heat_wave
Elastic interaction of x-rays with electrons
due to elastic scattering, when there is no change in the energy of the waves. The resulting map of the directions of the X-rays far from the sample is
X-ray_diffraction
Study involving matter and electromagnetic radiation
tissue analysis and medical imaging. Matter waves and acoustic waves can be considered forms of radiative energy, and recently gravitational waves have
Spectroscopy
Sport of riding waves
Surfing waves can be analyzed using the following parameters: breaking wave height, wave peel angle (α), wave breaking intensity, and wave section length
Surfing
Earthquake and tsunami in eastern Canada
States Geological Survey created an intensity map by using the Revised Modified Mercalli scale. The tsunami waves had an amplitude of 3–8 metres (9.8–26
1929_Grand_Banks_earthquake
cyclones of at least tropical storm intensity, 972 at hurricane intensity, and 342 at major hurricane intensity recorded within the Atlantic Ocean since
List of Atlantic hurricane records
List_of_Atlantic_hurricane_records
Quantum mechanical waves describing matter
Matter waves are a central part of the theory of quantum mechanics, being half of wave–particle duality. At all scales where measurements have been practical
Matter_wave
Mathematical transform that expresses a function of time as a function of frequency
functional analysis or the theory of distributions. In relativistic quantum mechanics one encounters vector-valued Fourier transforms of multi-component wave functions
Fourier_transform
Concept relating to waves and signals
to other waves, such as sound waves and sea waves that also present a variety of frequencies and wavelengths (e.g., noise spectrum, sea wave spectrum)
Spectrum_(physical_sciences)
Type of cyclone
Extratropical cyclones, sometimes called mid-latitude cyclones or wave cyclones are low-pressure areas which, along with anticyclones, drive the weather
Extratropical_cyclone
Differential equation for the description of waves or standing wave
The wave equation is a second-order linear partial differential equation for the description of waves or standing wave fields such as mechanical waves (e
Wave_equation
Electromagnetic radiation humans can see
and radio waves are also light. This is why visible radiation is commonly termed visible light. The primary properties of light are intensity, propagation
Light
Italian astrophysicist and data scientist
where worked on the Virgo experiment. Cuoco is an expert in data analysis. Gravitational wave detectors collect information from astrophysical phenomena, such
Elena_Cuoco
Physical phenomenon
physics, a surface wave is a mechanical wave that propagates along the interface between differing media. A common example is gravity waves along the surface
Surface_wave
Medical procedure for pain relief
and used to navigate submarines. It was realized that the high intensity ultrasound waves that they were using were heating and killing fish. This led to
Therapeutic_ultrasound
Flow of electric charge
(2013). "Section 1.2.3". Electric Circuit Analysis. Pearson Education India. ISBN 978-9332514102. 'Current intensity' is usually referred to as 'current' itself
Electric_current
Characteristic of any structure that is periodic across a position in space
plotting the intensity of the light along lines running through it. Any curve can be broken down into constituent sine waves by Fourier analysis. The theory
Spatial_frequency
Graphical representation of position or intensity over time
swell or wave + γραφή, writing; also called a kymographion) is a type of two-dimensional plot that represents spatial position or signal intensity over time
Kymograph
Period of sleep in humans and other animals
wake–promoting nodes beyond the wake–promoting PB. ... The intensity of cortical slow–wave–activity (SWA: 0.5–4Hz) during SWS is also widely accepted
Slow-wave_sleep
Device used to measure gravitational waves
gravitational-wave detector (used in a gravitational-wave observatory) is any device designed to measure tiny distortions of spacetime called gravitational waves.
Gravitational-wave observatory
Gravitational-wave_observatory
Diffraction using small incidence angles
used to interrogate surface structure. X-ray standing waves, another X-ray variant where the intensity decay into a sample from diffraction is used to analyze
Grazing_incidence_diffraction
Category 4 Pacific hurricane in 1959
Saffir–Simpson hurricane wind scale. Later analysis indicated that these figures constituted the hurricane's peak intensity. After peaking, Dot slightly weakened
Hurricane_Dot_(1959)
Surface waves generated by wind on open water
In fluid dynamics, a wind wave, or wind-generated water wave, is a surface wave that occurs on the free surface of bodies of water as a result of the
Wind_wave
Field of radiation
An Airy beam is a propagation invariant wave whose main intensity lobe propagates along a curved parabolic trajectory while being resilient to perturbations
Airy_beam
Method for displaying sine wave vectors
magnitude. In this concept the representation and the analysis becomes very simple and the addition of two wave forms is realized by their vectorial summation
Phasor approach to fluorescence lifetime and spectral imaging
Phasor_approach_to_fluorescence_lifetime_and_spectral_imaging
Shock wave from flying at the speed of sound
will generate lower pressures on the ground because the shock wave reduces in intensity as it spreads out away from the vehicle, but the sonic booms are
Sonic_boom
Study of the response of buildings and structures to earthquakes
of intensity to represent different possible earthquake scenarios. This has led to the emergence of methods like the incremental dynamic analysis. Applied
Seismic_analysis
storm intensity and of Accumulated Cyclone Energy (ACE). All of the tropical cyclones of this year developed from westward-moving African tropical waves. The
1990_Pacific_hurricane_season
Measurement system
with itself, and sinusoidal fringes in light intensity are produced and recorded. A cycle of light intensity or fringe count indicates a displacement of
Velocity interferometer system for any reflector
Velocity_interferometer_system_for_any_reflector
Ongoing armed conflict in South Asia
reduced hostilities but did not end them; fighting continued at lower intensity through the summer of 2026 and flared again in September following a mass-casualty
2026_Afghanistan–Pakistan_war
Forensic technique to validate audio recordings
light intensity in accordance with the voltage supplied, which in turn depends on the voltage supply frequency. As a result, the light intensity can carry
Electrical network frequency analysis
Electrical_network_frequency_analysis
Structure that guides waves efficiently
and their intensities would decrease according to the inverse square law. There are different types of waveguides for different types of waves. The original
Waveguide
Biological sound detection process
source localization, including time difference and level difference (or intensity difference) between the ears, and spectral information. Other animals
Sound_localization
Category 5 intensity on the Saffir–Simpson hurricane scale, the highest possible classification on the scale. Hurricanes of this intensity are infrequent
List of Category 5 Pacific hurricanes
List_of_Category_5_Pacific_hurricanes
Telecommunications performance metric
{\displaystyle r} . The radiated wave can be considered locally as a plane wave. The intensity of an electromagnetic plane wave is: P S = c ∘ ε ∘ 2 E θ 2 =
Gain_(antenna)
Hurricane-like storms in the Mediterranean Sea
Saffir–Simpson scale, and Medicane Ianos in 2020 was recorded reaching Category 2 intensity. The main societal hazard posed by medicanes is not usually from destructive
Mediterranean tropical-like cyclone
Mediterranean_tropical-like_cyclone
Measure of earthquake size
World-Wide Standard Seismograph Network (WWSSN) permitted closer analysis of seismic waves. Notably, in 1966 Keiiti Aki showed that the seismic moment of
Moment_magnitude_scale
Category 4 Atlantic hurricane in 2020
2021. "Europe Weather Analysis on 2020-09-29". Free University of Berlin. September 29, 2020. Retrieved February 16, 2021. "Waves, Wind Lash Bermuda As
Hurricane_Teddy
Earthquake probability in a specific area and time
geographic area, within a given window of time, and with ground motion intensity exceeding a given threshold. With a hazard thus estimated, seismic risk
Seismic_hazard
Category 5 Pacific hurricane in 1997
Guillermo was thought to have briefly leveled out in intensity on August 2; however, in post-storm analysis, the NHC discovered that a steady period of rapid
Hurricane_Guillermo_(1997)
Faint earth tremor caused by natural phenomena
associated waves, increase in intensity due to rising temperatures in the oceans and atmosphere attributed to anthropogenic global warming. Body wave microseisms
Microseism
confusing storms, resulted from the intensification of an easterly wave near Guam. Post analysis indicates that a convergent westerly and southwesterly flow
1949_Pacific_typhoon_season
Measurement method using interference of waves
when two waves with the same frequency combine, the resulting intensity pattern is determined by the phase difference between the two waves—waves that are
Interferometry
Ratio of the desired signal to the background noise
arm only, the field of the electromagnetic wave is proportional to the voltage (assuming that the intensity in the second, the reference arm is constant)
Signal-to-noise_ratio
Bending of electron beams due to electrostatic interactions with matter
diffraction. A map of the directions of the electron waves leaving the sample will show high intensity (white) for favored directions, such as the three
Electron_diffraction
Full range of electromagnetic radiation frequencies
spectrum, spectroscopy can be used to separate waves of different frequencies, so that the intensity of the radiation can be measured as a function of
Electromagnetic_spectrum
Pacific tropical storm in 1990
eighteenth named storm, Rachel developed on September 27 from a tropical wave southwest of mainland Mexico. After becoming a tropical depression, the system
Tropical_Storm_Rachel_(1990)
Iconic quantum mechanics problem
quantum mechanics theory: how can the prediction of spherically symmetric wave function result in linear tracks seen in a cloud chamber. The problem was
Mott_problem
Beneficial change in medical condition, often caused by a drug
Tom F. (2017). "Low-intensity Extracorporeal Shock Wave Treatment Improves Erectile Function: A Systematic Review and Meta-analysis". European Urology
Therapeutic_effect
Technique for determining surface structures
a popular tool for surface analysis until the early 1960s. The main reasons were that monitoring directions and intensities of diffracted beams was a difficult
Low-energy electron diffraction
Low-energy_electron_diffraction
replacement cycles disrupted further strengthening, with fluctuations in intensity during the next few days. Irma resumed deepening upon encountering warmer
Meteorological history of Hurricane Irma
Meteorological_history_of_Hurricane_Irma
Wave phenomenon
Diffraction processes affecting waves are amenable to quantitative description and analysis. Such treatments are applied to a wave passing through one or more
Diffraction_from_slits
Crystallographic electron diffraction technique
(typically less than 100 nm). Due to the wave–particle duality, the high-energetic electrons behave as matter waves with wavelength of a few thousandths of
Selected_area_diffraction
Maximum ground acceleration during an earthquake at a location
geographic point. The Mercalli intensity scale uses personal reports and observations to measure earthquake intensity but PGA is measured by instruments
Peak_ground_acceleration
transforming phase shift gradients into intensity variations. These intensity variations are mixed with other intensity variations, making it difficult to
Quantitative phase-contrast microscopy
Quantitative_phase-contrast_microscopy
Visual representation of the spectrum of frequencies of a signal as it varies with time
spectrogram is usually depicted as a heat map, i.e., as an image with the intensity shown by varying the colour or brightness. A common format is a graph
Spectrogram
Logarithmic unit expressing the ratio of physical quantities
dimensional analysis, e.g., a 100-meter run with a 3.5 dB/km fiber yields a loss of 0.35 dB = 3.5 dB/km × 0.1 km. The human perception of the intensity of sound
Decibel
Light scattering by small particles
polarizability of the particles. The oscillating electric field of a light wave acts on the charges within a particle, causing them to move at the same frequency
Rayleigh_scattering
Frequency swept signal
non-linear dependence between frequency and the propagation speed of the wave components). It is usually compensated for by using a matched filter, which
Chirp
are at least tropical storm intensity, divided by 10,000. Therefore, tropical depressions are not included. A tropical wave that led to the formation of
2024_Pacific_hurricane_season
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WAVE INTENSITY-ANALYSIS
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WAVE INTENSITY-ANALYSIS
WAVE INTENSITY-ANALYSIS
WAVE INTENSITY-ANALYSIS
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