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Light or sound absorption in a substance
meteorology and climatology. The attenuation length is the reciprocal of the attenuation coefficient. The attenuation coefficient describes the extent to which
Attenuation_coefficient
Property of materials
The mass attenuation coefficient, or mass narrow beam attenuation coefficient of a material is the attenuation coefficient normalized by the density of
Mass_attenuation_coefficient
Gradual loss of flux intensity through a medium
attenuation is usually measured in units of decibels per unit length of medium (dB/cm, dB/km, etc.) and is represented by the attenuation coefficient
Attenuation
Measure of how strongly a chemical species absorbs a given wavelength of light
absorption coefficient or molar attenuation coefficient (ε) is a measurement of how strongly a chemical species absorbs, and thereby attenuates, light at
Molar_absorption_coefficient
Range of wavelengths from 650 to 1350 nanometre
tissue, the attenuation coefficient (mainly the scattering coefficient) is modified due to changes in refractive index mismatches Attenuation of light in
Near-infrared window in biological tissue
Near-infrared_window_in_biological_tissue
Scientific law describing absorption of light
Beer–Lambert law states that the total attenuation can be obtained by integrating the attenuation coefficient over small slices dz of the beamline: A
Beer–Lambert_law
Physics concept
is the attenuation coefficient or Napierian attenuation coefficient of that material at z, and if α(z) is uniform along the path, the attenuation is said
Optical_depth
Logarithm of ratio of incident to transmitted radiant power through a sample
contribute to attenuation of the beam passing through the sample. The term "internal absorbance" is sometimes used to describe beam attenuation caused by
Absorbance
Formula for sound intensity loss in a Newtonian fluid
In acoustics, Stokes's law of sound attenuation is a formula for the attenuation of sound in a Newtonian fluid, such as water or air, due to the fluid's
Stokes's law of sound attenuation
Stokes's_law_of_sound_attenuation
Diagnostic test for bone mineral density testing
bone. However, attenuation coefficients vary with the energy of the X-rays, and, crucially, the ratio of the attenuation coefficients also varies. Consider
Dual-energy X-ray absorptiometry
Dual-energy_X-ray_absorptiometry
Measure of change in amplitude and phase of a wave
telecommunications, the term attenuation constant, also called attenuation parameter or attenuation coefficient, is the attenuation of an electromagnetic wave
Propagation_constant
Physical process by which matter takes up a photon's energy and stores it
the absorption and attenuation coefficients, respectively "Extinction" in astronomy, which is equivalent to the attenuation coefficient Other measures of
Absorption (electromagnetic radiation)
Absorption_(electromagnetic_radiation)
Effectiveness of a material in transmitting radiant energy
the beam of light through the material sample. Attenuation cross section and molar attenuation coefficient are related by ε i = N A ln 10 σ i , {\displaystyle
Transmittance
attenuation coefficient, also called mass extinction coefficient, is the attenuation coefficient divided by density; see mass attenuation coefficient
Mathematical descriptions of opacity
Mathematical_descriptions_of_opacity
Topics referred to by the same term
attenuation of seismic energy in the Earth Attenuation (or verb attenuate) may also refer to: Attenuation (botany) Attenuation (brewing), the percent of sugar converted
Attenuation_(disambiguation)
minimum at 418 nm, at which wavelength the attenuation coefficient is about 0.0044 m−1, which is an attenuation length of about 227 meters. These values
Electromagnetic absorption by water
Electromagnetic_absorption_by_water
Range of physical processes in physics
many different concepts, including scattering cross section (σ), attenuation coefficients, the bidirectional scattering distribution function (BSDF), S-matrices
Scattering
Average distance travelled by a particle between impacts with other particles
linear attenuation coefficient, μ/ρ is the mass attenuation coefficient and ρ is the density of the material. The mass attenuation coefficient can be
Mean_free_path
Measure of energy loss as sound waves propagate through a medium
effect can be quantified through the Stokes's law of sound attenuation. Sound attenuation may also be a result of heat conductivity in the media as has
Acoustic_attenuation
Topics referred to by the same term
Extinction coefficient refers to several different measures of the absorption of light in a medium: Attenuation coefficient, sometimes called "extinction
Extinction_coefficient
How deeply visible light penetrates through water
the beam attenuation. Beam attenuation is essentially the opposite of light transmission. Clearer water with a low beam attenuation coefficient will have
Water_clarity
Quantitative scale of radiodensity
unit (HU) scale is a linear transformation of the original linear attenuation coefficient measurement into one in which the radiodensity of distilled water
Hounsfield_scale
Property of an object or substance that is impervious to light
"opacity" is another term for the mass attenuation coefficient (or, depending on context, mass absorption coefficient, the difference is described here) κ
Opacity
of the ultrasound wave (MPa), derated by an attenuation factor to account for in-tissue acoustic attenuation fc is the center frequency of the ultrasound
Mechanical_index
Non-destructive material testing using ultrasonic waves
the scattering attenuation coefficient depends mainly on the grain size; Zeng et al, figured out that in pure Niobium, attenuation is linearly correlated
Ultrasonic_testing
Type of wave
characterizing microstructures". In viscoelastic materials, the attenuation coefficients per length α ℓ {\displaystyle \ \alpha _{\ell }\ } for longitudinal
Longitudinal_wave
Depth that light can penetrate into a material
positive number describes attenuation (reduction of the field) or gain; this is usually obvious from the context. The attenuation constant for an electromagnetic
Penetration_depth
Probability of a given process occurring in a particle collision
Flow velocity Luminosity (scattering theory) Linear attenuation coefficient Mass attenuation coefficient Neutron cross section Nuclear cross section Gamma
Cross_section_(physics)
Using conductive or magnetic materials to reduce electromagnetic field intensity
\infty } this coefficient goes to 0 (perfect shielding). When μ r ≫ 1 {\displaystyle \mu _{\text{r}}\gg 1} , then the attenuation coefficient takes on the
Electromagnetic_shielding
By-product of copper extraction
increase in the linear attenuation coefficient of mixes. On the other hand, the effect of CS on the linear attenuation coefficient was more pronounced as
Copper_slag
Study of light interaction with water and submerged materials
us. Attenuation in water, also called beam attenuation or the beam attenuation coefficient, is the sum of all absorption and scattering. Attenuation of
Ocean_optics
Medical imaging technique
Transmission scans directly measure attenuation values at 511 keV. With PET-CT scanners the 511 keV photon attenuation coefficients can be estimated using the
Positron_emission_tomography
Capacity of an object to reflect light
Fresnel reflection coefficient, which is the ratio of the reflected to incident electric field; as such the reflection coefficient can be expressed as
Reflectance
Tool used to measure water transparency/turbidity
7 divided by this depth in metres yields an attenuation coefficient (also called an extinction coefficient), for the available light averaged over the
Secchi_disk
There is an international standard for this method. Measurement of attenuation coefficient versus ultrasound frequency yields raw data for further calculation
Ultrasound attenuation spectroscopy
Ultrasound_attenuation_spectroscopy
Production of light due to absorption of high-energy photons or particles
μ {\displaystyle \mu } is the linear attenuation coefficient, which is the sum of the attenuation coefficients of the various contributions: μ = μ p
Scintillation_(physics)
Probability that a gamma ray interacts with matter
and mass attenuation coefficients, which are useful for practical applications. Cross section (physics) Gamma ray Linear attenuation coefficient Mass attenuation
Gamma_ray_cross_section
Capacity of an object to radiate electromagnetic energy
radiation thermometry and thermography (thermal imaging). "Emissivity Coefficients of some common Materials". engineeringtoolbox.com. Resources, Tools and
Emissivity
Light-conducting fiber
with 17 dB/km attenuation by doping silica glass with titanium. A few years later, they produced a fiber with only 4 dB/km attenuation using germanium
Optical_fiber
Electron penetration depth at which its energy is reduced by 1/e
available from the Particle Data Group. Mean free path Attenuation length Attenuation coefficient Attenuation Range (particle radiation) Stopping power (particle
Radiation_length
Topics referred to by the same term
ångström (Å) a unit of length (equal to 1×10−10 metres) area (A) attenuation coefficient (a) rotational constant (A)[citation needed] specific surface area
A_(disambiguation)
Estimate object properties from a finite number of projections
{\displaystyle \mu (x,y)} is the attenuation coefficient as a function of position. Therefore, generally the total attenuation p {\displaystyle p} of a ray
Tomographic_reconstruction
Topics referred to by the same term
Extinction (another word for attenuation), in physical sciences Extinction coefficient (another term for mass attenuation coefficient), in physical sciences
Extinction_(disambiguation)
Chemical element with atomic number 82 (Pb)
density (which gives it a high attenuation coefficient) as well as its remarkably high mass attenuation coefficient (it attenuates per unit mass better than
Lead
Phenomenon in physics
Stokes' law (sound attenuation). This effect is more intense at elevated frequencies and is much greater in air (where attenuation occurs on a characteristic
Acoustic_streaming
Transmission of sounds through and between materials
ISBN 80-214-2670-5 Acoustic absorption Acoustic attenuation Architectural acoustics Attenuation coefficient Flanking transmission Noise pollution Soundproofing
Acoustic_transmission
Measurement of electromagnetic radiation (esp. optical radiation)
surface, divided by that received by that surface. Hemispherical attenuation coefficient μ m−1 Radiant flux absorbed and scattered by a volume per unit
Radiometry
Scattering Transmittance Attenuation coefficients Half-life Neutron cross section Specific activity Phase diagram Boiling point Coefficient of thermal expansion
List_of_materials_properties
Device that narrows or straightens a beam of particles or waves
{2}{\mu }}} Where μ {\displaystyle \mu } is the linear attenuation coefficient of the material from which the collimator is made. Autocollimation
Collimator
Speed of electromagnetic waves in vacuum
corresponding respectively to the index of refraction and to the attenuation coefficient, are linked by the Kramers–Kronig relations. In practical terms
Speed_of_light
Type of non-destructive testing
are absorbed according to the object material's attenuation coefficient. The attenuation coefficient is compiled from all the cross sections of the interactions
Industrial_radiography
Physical property of allowing light
limiting the transmission of a signal across large distances. Attenuation coefficients in fiber optics usually use units of dB/km through the medium due
Transparency_and_translucency
When an object takes in energy from sound waves instead of reflecting them
energy into heat, resulting in acoustic attenuation, mostly due to the wall's viscosity. Similar attenuation mechanisms apply for the air and any other
Absorption_(acoustics)
Measure of the distance needed to visually discern an object
d x {\displaystyle dF=-b_{\text{ext}}{F}dx} where bext is the attenuation coefficient. The scattering of background light into the observer's line of
Visibility
Physical quantity
Quantities measured in reciprocal length include: absorption coefficient or attenuation coefficient, in materials science curvature of a line, in mathematics
Reciprocal_length
Mmeasures the probability of an absorption process
path Compton scattering Transmittance Attenuation Beer–Lambert law High energy X-rays Attenuation coefficient Absorption spectroscopy "Two-Photon Absorption
Absorption_cross_section
History of radiation-based medical imaging
Korenblum were the first to propose reconstructing the linear attenuation coefficient μ in a slice using angular radiographs. In their paper О методе
History of computed tomography
History_of_computed_tomography
The engineering tradeoff is a slight increase in the minimum attenuation coefficient. Such fiber is called dispersion-shifted fiber. Another way to
Zero-dispersion_wavelength
Optical technique for monitoring brain activity
is measured light intensity, ϵ {\displaystyle \epsilon } is the attenuation coefficient, [ X ] {\displaystyle [X]} is the chromophore concentration, l
Functional near-infrared spectroscopy
Functional_near-infrared_spectroscopy
Type of metal fluoride glass
had attenuation coefficients on the order of 1000 dB/km, as reported in 1965. Kapron et al. reported in 1970 fibers having an attenuation coefficient of
ZBLAN
Equations of light transmission and reflection
transmission coefficient) T. Note that these are what would be measured right at each side of an interface and do not account for attenuation of a wave in
Fresnel_equations
Thickness affecting radiation
5 mm Steel: 12.7 mm Lead: 4.8 mm Tungsten: 3.3 mm Uranium: 2.8 mm Attenuation coefficient Radiation protection Half value thickness euronuclear.org FDA.
Half-value_layer
Object used for testing medical visualization devices
contrast agents with similar x-ray absorbing properties (such as the attenuation coefficient) to normal tissue to tune the contrast of the imaging device or
Imaging_phantom
Ability of a material to absorb radiant energy
surface, divided by that received by that surface. Hemispherical attenuation coefficient μ m−1 Radiant flux absorbed and scattered by a volume per unit
Absorptance
Ability to see objects underwater
beam attenuation coefficient (spectral sensitivity of the eye). This function has been reported as 4.6 divided by the photopic beam attenuation coefficient
Underwater_vision
Mathematical models
(linear attenuation) 2) the Strick–Azimi model (power-law attenuation) 3) the Kjartansson model (constant Q) 4) the Azimi models (non-linear attenuation) 5)
Q_models_(seismology)
Statistical modeling method
estimators of β to become biased. Generally, the form of bias is an attenuation, meaning that the effects are biased toward zero. In a multiple linear
Linear_regression
Computed tomography technique
reconstructed CT image, as opposed to the estimated average linear attenuation coefficient obtained in a conventional CT scan. It turns out such a material
Photon-counting computed tomography
Photon-counting_computed_tomography
the object can also be measured, allowing estimation of both the attenuation coefficient and the index of refraction. Traditional ultrasound imaging primarily
Ultrasound transmission tomography
Ultrasound_transmission_tomography
Process in molecular biology
approximately 1.8): This difference is due to the much higher mass attenuation coefficient nucleic acids have at 260 nm and 280 nm, compared to that of proteins
Nucleic_acid_quantitation
Calculation for attenuation of radio signals
deviations that contribute to the total attenuation of the signal. The statistical estimates or attenuation variables of this prediction model are: I)
Longley–Rice_model
celestial bodies rather than their positions or motions in space. attenuation coefficient The measure of how much the incident energy beam (e.g. ultrasound
Glossary_of_physics
Audible warning device powered by steam
traveling farthest. For example, a 1000 Hz whistle has an atmospheric attenuation coefficient one half that of a 2000 Hz whistle (calculated for 50 percent relative
Steam_whistle
Medical diagnostic method
pre-set attenuation factors. Disadvantages of this method include a lack of bone attenuation and loss of the true continuous range of attenuation factors
PET/MRI
Type of analog or digital filter
attenuation to a desired value, and for the same reasons. Setting the Chebyshev II cutoff attenuation is the same as for Chebyshev cutoff attenuation
Chebyshev_filter
the usual g/mol or kg/kmol. Molar attenuation coefficient is a measurement of how strongly a chemical species attenuates light at a given wavelength. It
Glossary_of_engineering:_M–Z
Italian open-source hardware and software company
Piera, Jaume (2016-03-15). "Estimating the Underwater Diffuse Attenuation Coefficient with a Low-Cost Instrument: The KdUINO DIY Buoy". Sensors. 16 (3):
Arduino
Chemical element with atomic number 26 (Fe)
Photon mass attenuation coefficient for iron
Iron
Non-invasive therapeutic technique
{\displaystyle \alpha } is the attenuation coefficient (in units of inverse length), and z is the distance traveled through the attenuating medium (e.g. tissue)
Focused_ultrasound
Statistical bias in linear regressions
Regression dilution, also known as regression attenuation, is the biasing of the linear regression slope towards zero (the underestimation of its absolute
Regression_dilution
capable of detecting background attenuation, although not for nuclear spin-phonon coupling, in which has attenuation coefficients from 10-7 to 10-8 dB/cm. Hence
Nuclear_acoustic_resonance
Branch of molecular spectroscopy
Absorption spectrum (attenuation coefficient vs. wavelength) of liquid water (red) atmospheric water vapor (green) and ice (blue line) between 667 nm
Rotational–vibrational spectroscopy
Rotational–vibrational_spectroscopy
is complicated by anelastic attenuation because it is superimposed upon the AVO effects. The rate of anelastic attenuation itself also contains additional
Anelastic_attenuation_factor
Device that converts x-rays into visible light with greater contrast
higher conversion efficiency thanks to high atomic number and mass attenuation coefficient, when compared to zinc-cadmium sulfide. The input phosphor are
X-ray_image_intensifier
{\textstyle \Gamma } is the detector response function. Linear attenuation coefficients and integrated thicknesses for materials that make up the object
Spectral imaging (radiography)
Spectral_imaging_(radiography)
HVAC noise control treatment
to its noise attenuation performance, whereby greater attenuation usually equates to greater pressure drop. Prefabricated sound attenuators rose to prominence
Sound_attenuator
Imaging technique using inaudible air blasts
the object for imaging: the attenuation the wave's sound pressure experiences indicate on the object's attenuation coefficient, the time-of-flight of the
Ultrasound computer tomography
Ultrasound_computer_tomography
Meteorological instrumentation
the light beam is quantified as an attenuation coefficient. Any departure from the clear air extinction coefficient (e.g. in fog) is measured and is inversely
Scatterometer
ITU-T Recommendation
recommended by ITU-T. G.655 has the cable cut-off wavelength and cable attenuation coefficients in the C and L bands. Large effective area fiber (LEAF) optical
G.655
Mass attenuation coefficients of selected isotopes for X-ray photons with energies up to 250 keV.
High-energy_X-rays
Marian Smoluchowski find the Einstein-Smoluchowski formula for the attenuation coefficient due to density fluctuations in a gas. Umetaro Suzuki isolates the
1910_in_science
mol/kg is sometimes said to be 1 molal. Contrast molarity. molar attenuation coefficient molar concentration A measure of the concentration of a chemical
Glossary_of_chemistry_terms
are mainly the chlorophyll concentration, the optical diffuse attenuation coefficients, the concentration of dissolved organic material or yellow substance
Geostationary Ocean Color Imager
Geostationary_Ocean_Color_Imager
Motion-based medical imaging technology
the intensity of the attenuated radiation, "e" is Euler's constant, and D is the attenuation. The linear attenuation coefficient along the path of the
Kinetic_imaging
Physics", 3rd ed., Longman Group Ltd. (2000), p. 3. "X-ray Mass Attenuation Coefficients: Lead". National Institute of Standards and Technology (NIST).
Absorption_edge
Material property relevant for characterizing fluid flow
important for understanding a variety of fluid phenomena, including sound attenuation in polyatomic gases (e.g. Stokes's law), propagation of shock waves,
Volume_viscosity
Type of analog linear filter in electronics
standard set attenuation value for Bessel filters. However, −3.0103 dB is a common choice. Some applications may use a higher or lower attenuation such as
Bessel_filter
Optimal condition for a hypothetical transmission line
transmission line is distortionless if it is dispersionless and the attenuation coefficient is independent of frequency. Mathematically d d ω α = 0 {\displaystyle
Heaviside_condition
Observation of water bodies from a distance
substances that are present in the water. For instance, the diffuse attenuation coefficient of downwelling irradiance, Kd (often used as an index of water
Water_remote_sensing
Topics referred to by the same term
century by Sharaf al-Dīn al-Tūsī (Linear) attenuation coefficient (AKA narrow-beam attenuation coefficient), a measure of how easily a volume of material
Linear_(disambiguation)
ATTENUATION COEFFICIENT
ATTENUATION COEFFICIENT
Boy/Male
Tamil
Giving attention
Girl/Female
Tamil
Loving and kind. Love attention but can be shy. very beautiful
Boy/Male
Gujarati, Hindu, Indian
Attention
Boy/Male
Hindu
Giving attention
Boy/Male
Muslim
Concern Attention.
Boy/Male
Hindu, Indian, Sanskrit
One-pointed; With One Attention
Boy/Male
Muslim
Concern Attention.
Boy/Male
Arabic, Australian, Muslim
Ready; Attention
Surname or Lastname
English
English : occupational name for a bell ringer, in particular one whose duty was to make public announcements, after ringing a bell to attract attention. Compare Bell.Americanized or Swedish spelling of German Bellmann, a North German habitational name from Belle in Westphalia, Bell in the Rhineland, or Bellen near Bremen.
Boy/Male
Arabic, Muslim, Sindhi
Attention to Details; Keen-eyed
Boy/Male
Basque, Hindu, Indian
Fair; Giving Attention
Boy/Male
Arabic, Farsi, Gujarati, Hindu, Indian, Iranian, Kannada, Marathi, Muslim, Punjabi, Sikh, Sindhi
Concern Attention; Kindness; Loving; Bounty; Favour
Male
English
Probably an English contraction of French Marcelon, MARLON means "little one of the sea." This name was first brought to public attention by the American actor Marlon Brando whose family is said to be of French descent.Â
Female
English
This name first appears in the chronicles of Geoffrey of Monmouth; Sir Walter Scott then brought the name to the public's attention by using it to name a character in his novel Ivanhoe. It is the Latin form of an uncertain Anglo-Saxon name, perhaps Hrodwyn, ROWENA means "famous joy."
Boy/Male
Hindu, Indian
Attention
Surname or Lastname
English (chiefly West Midlands and northern England)
English (chiefly West Midlands and northern England) : topographic name for someone who lived in a house (Middle English hous) in open pasture land (see Field). Reaney draws attention to the form de Felhouse (Staffordshire 1332), and suggests that this may have become Fellows.
Girl/Female
Hindu
Loving and kind. Love attention but can be shy. very beautiful
Boy/Male
Arabic
Consideration; Depth; Attention
ATTENUATION COEFFICIENT
ATTENUATION COEFFICIENT
Girl/Female
English American
Modern; combination of Jocelyn and the musical term jazz.
Boy/Male
Hindu
Mallikarjun is An another name of the Lord Shiva
Boy/Male
Muslim
Firm
Girl/Female
Arabic, Muslim
Beneficent
Boy/Male
Hindu
Name of Lord Vishnu with numerological strength
Girl/Female
Hindu
Sacred, Dignified
Male
English
English form of Latin Merlinus, the name of a famous wizard of Arthurian legend, MERLIN means "sea-fort." Merlin was introduced into Arthurian legend by Geoffrey of Monmouth. According to Geoffrey, Merlin was the son of a demon and a princess. He became known for his prophetic abilities at a very young age and was consulted by King Vortigern to explain why his castle kept collapsing. Merlin revealed that there was an underground lake in which two dragons slept, a white one and a red one, representing the Saxons and Britons, and this was the portent for things to come. He is also called Myrddin Emrys, meaning "Merlin the Immortal."Â
Girl/Female
Tamil
Gayanthika | காயஂதிகா
Singing
Girl/Female
Latin
Worshipped in the home.
Surname or Lastname
English (chiefly Northamptonshire)
English (chiefly Northamptonshire) : metronymic from Leece 1.
ATTENUATION COEFFICIENT
ATTENUATION COEFFICIENT
ATTENUATION COEFFICIENT
ATTENUATION COEFFICIENT
ATTENUATION COEFFICIENT
p. pr. & vb. n.
of Attenuate
v. t.
Testimony; witness; attestation.
n.
Warrant; attestation.
n.
Servile attention; sycophancy.
n.
Attention; heed.
n.
Attention; regard, care.
n.
The act of attenuating; the act of making thin or less dense, or of rarefying, as fluids or gases.
n.
Refinement; subtlety; extreme attenuation.
n.
The act of filling up with earth, or of forming land with alluvial earth.
n.
Proof; attestation.
n.
Open attestation; profession.
n.
Testimony; attestation; witness; approval.
n.
The act of attesting; testimony; witness; a solemn or official declaration, verbal or written, in support of a fact; evidence. The truth appears from the attestation of witnesses, or of the proper officer. The subscription of a name to a writing as a witness, is an attestation.
n.
The process of weakening in intensity; diminution of virulence; as, the attenuation of virus.
n.
Joint attestation; proof.
n.
An act of civility or courtesy; care for the comfort and pleasure of others; as, attentions paid to a stranger.
n.
The act or state of attending or heeding; the application of the mind to any object of sense, representation, or thought; notice; exclusive or special consideration; earnest consideration, thought, or regard; obedient or affectionate heed; the supposed power or faculty of attending.
n.
The act of axtenuating or the state of being extenuated; the act of making thin, slender, or lean, or of palliating; diminishing, or lessening; palliation, as of a crime; mitigation, as of punishment.
n.
The act or process of making slender, or the state of being slender; emaciation.
n.
Witness; testimony; attestation.