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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
Light or sound absorption in a substance
medium. The (derived) SI unit of attenuation coefficient is the reciprocal metre (m−1). Extinction coefficient is another term for this quantity, often used
Attenuation_coefficient
Measure of how strongly a chemical species absorbs a given wavelength of light
M−1⋅cm−1 equals 1000 cm2/mol. The molar absorption coefficient is also known as the molar extinction coefficient and molar absorptivity, but the use of these
Molar_absorption_coefficient
Property of materials
in solution chemistry). Mass extinction coefficient is an old term for this quantity. The mass attenuation coefficient can be thought of as a variant
Mass_attenuation_coefficient
Property in optics
indicates the phase velocity, while the imaginary part κ is called the extinction coefficient indicates the amount of attenuation when the electromagnetic wave
Refractive_index
Range of wavelengths from 650 to 1350 nanometre
properties of the most important chromophores in tissue. The molar extinction coefficient ( ε {\displaystyle \varepsilon \,} ) is another parameter that is
Near-infrared window in biological tissue
Near-infrared_window_in_biological_tissue
Material science measurement method
Bloomer deduced dispersion equations for the refractive index, n, and extinction coefficient, k, which were published in 1986 and 1988. The 1986 publication
Refractive index and extinction coefficient of thin film materials
Refractive_index_and_extinction_coefficient_of_thin_film_materials
Range of spectroscopic analysis
Tyrosine, for example, increases in absorption maxima and molar extinction coefficient when pH increases from 6 to 13 or when solvent polarity decreases
Ultraviolet–visible spectroscopy
Ultraviolet–visible_spectroscopy
Topics referred to by the same term
species) Language extinction, or language death Extinction (another word for attenuation), in physical sciences Extinction coefficient (another term for
Extinction_(disambiguation)
Physical process by which matter takes up a photon's energy and stores it
Beer–Lambert law) The mass attenuation coefficient (also called "mass extinction coefficient"), which is the absorption coefficient divided by density The absorption
Absorption (electromagnetic radiation)
Absorption_(electromagnetic_radiation)
Scientific law describing absorption of light
effect. Thus a scattering coefficient μs and an absorption coefficient μa can be combined into a total extinction coefficient μ = μs + μa. Importantly
Beer–Lambert_law
Chemical compound
At wavelength (378 - 382) nm, extinction coefficient > 8000 and at wavelength (298 - 302) nm, the extinction coefficient > 12000. Thymol blue undergoes
Thymol_blue
Tool used to measure water transparency/turbidity
divided by this depth in metres yields an attenuation coefficient (also called an extinction coefficient), for the available light averaged over the Secchi
Secchi_disk
Concept in astrophysics
the structure inside a star. Optical depth is a measure of the extinction coefficient or absorptivity up to a specific 'depth' of a star's makeup. τ ≡
Optical_depth_(astrophysics)
Chemical compound
which should never be used to prepare solutions of the reagent. The extinction coefficient of dansyl derivatives are important for measuring their concentration
Dansyl_chloride
particular wavelength—thus, the imaginary part is sometimes called the extinction coefficient k {\displaystyle k} . Such losses become particularly significant
List_of_refractive_indices
Meteorological instrumentation
transmissometer or transmissiometer is an instrument for measuring the extinction coefficient of the atmosphere and sea water, and for the determination of visual
Transmissometer
Non-radiative transfer of an excited electron between molecules
integral, where normalized means that both emission intensity and extinction coefficient have been adjusted to unit area. It is important noticed that J
Dexter_electron_transfer
Method to determine protein concentration
absorbance of the standards vs. their concentration. Compute the extinction coefficient and calculate the concentrations of the unknown samples. Prepare
Bradford_protein_assay
Chemical compound
5. Below this pH, it is colorless; above, it is blue. The molar extinction coefficient for the blue thymolphthalein dianion is 38,000 M−1 cm−1 at 595 nm
Thymolphthalein
Blue dye also used as a medication
Absorption spectrum of methylene blue, in terms of the molar extinction coefficient (base 10 logarithm). In this dataset, a peak absorbance of 1.7 (i.e
Methylene_blue
Serum albumin protein derived from cows
66,463 Da (= 66.5 kDa) isoelectric point in water at 25 °C: 4.7 Extinction coefficient of 43,824 M−1cm−1 at 279 nm Dimensions: 140 × 40 × 40 Å (prolate
Bovine_serum_albumin
Typographic symbol (underline)
refraction. When the refractive index has a wavelength-dependent extinction coefficient κ {\displaystyle \kappa } , the combined complex index of refraction
Underscore
Study involving matter and electromagnetic radiation
is the output intensity, ε {\displaystyle \varepsilon } is the extinction coefficient, ℓ {\displaystyle \ell } is the path length through the sample,
Spectroscopy
Chemical compound
relative/partitioning terms, Alcian Blue 8G has a log octanol-water partition coefficient (Log P) of −9.7, suggesting it is rather water-soluble (lipid-soluble
Alcian_blue_stain
Chemical compound which is reduced and oxidized
extinction coefficient of 16,900 M−1cm−1. NADH also absorbs at higher wavelengths, with a second peak in UV absorption at 339 nm with an extinction coefficient
Nicotinamide adenine dinucleotide
Nicotinamide_adenine_dinucleotide
Spectroscopic techniques that measure the absorption of radiation
absorption spectrum is typically quantified by the extinction coefficient, and the extinction and index coefficients are quantitatively related through the Kramers–Kronig
Absorption_spectroscopy
Measure of the distance needed to visually discern an object
Note.— The two distances have different values in air of a given extinction coefficient, and the latter b) varies with the background illumination. The
Visibility
Spectroscopic selection rule
intensities orders of magnitude weaker than "allowed" bands. The extinction coefficients for d-d bands are in the range 5–200 L mol−1 cm−1 . The allowedness
Laporte_rule
Modelling the appearance of paint coatings
absorption coefficient, s {\displaystyle s} is the back-scatter coefficient, and ϵ {\displaystyle \epsilon } is their sum, often called the extinction coefficient
Kubelka–Munk_theory
Rare variety of amber resin with a blue color
fluoresced with a greater intensity, even though the absorption extinction coefficient was larger for red and yellow amber. Although there are several
Blue_amber
solids content by polarimetry, densimetry and refractometry, color (extinction coefficient at 420 nm), reducing sugars, and the presence of metals such as
International Commission for Uniform Methods of Sugar Analysis
International_Commission_for_Uniform_Methods_of_Sugar_Analysis
Nano-scale semiconductor particles
particularly promising for optical applications due to their high extinction coefficient and ultrafast optical nonlinearities with potential applications
Quantum_dot
Property of waves that can oscillate with more than one orientation
medium whose refractive index has a significant imaginary part (or "extinction coefficient") such as metals;[clarification needed] these fields are also not
Polarization_(waves)
Property of an object or substance that is impervious to light
percentage of light blocked instead of the attenuation coefficient (aka extinction coefficient) and varies from 0% light blocked to 100% light blocked:
Opacity
Class of dyes
filters for tetramethylrhodamine (TRITC). Due to its high molar extinction coefficient, this dye is also easily detected by naked eye on electrophoresis
Cyanine
Class of instruments
signal (particle and molecular contributions). Profiles of the extinction coefficient have to be estimated using the molecular signal and the assumption
Atmospheric_lidar
Theoretical model describing the optical response of bound charges
Lefever-Button, G.; Powell, F. R. (1998). "Infrared Refractive Index and Extinction Coefficient of Polyimide Films". International Journal of Thermophysics. 19
Lorentz_oscillator_model
Chemical data page
{\displaystyle \scriptstyle A\times ln(T)+B/T+C+D\times T^{2}} with coefficients A=-2.125867E+01, B=-1.672626E+04, C=1.655099E+02, and D=1.100480E-05
Glycerol_(data_page)
Excitation of electrons in a molecule to a higher energy level
135 nm and that of water a n → σ* transition at 167 nm with an extinction coefficient of 7,000. Benzene has three aromatic π → π* transitions; two E-bands
Molecular electronic transition
Molecular_electronic_transition
Anion in which a Fe2+ ion is complexed by 6 CN– ions
negligible absorption at this wavelength while ferricyanide has an extinction coefficient of 1040 M−1 cm−1. The dominant use of ferrocyanides is as precursors
Ferrocyanide
Massive galaxy in the constellation Boötes
stellar populations. The galaxy is also characterized by a high extinction coefficient, equal to Av ≈ 1.0-1.5 magnitudes. Dense interstellar dust effectively
EGS-z11-R0
Amount of air seen through in astronomical observations
calculation of extinction can sometimes be done by using one of the simple air mass formulas and separately determining extinction coefficients for each of
Air_mass_(astronomy)
Quantum chemistry rule regarding vibronic transitions
the other selection rules. The table below gives the range of extinction coefficients for the possible combinations of allowed and forbidden spin and
Franck–Condon_principle
Chemical compound
visible light at 412 nm, using an extinction coefficient of 14,150 M−1 cm−1 for dilute buffer solutions, and a coefficient of 13,700 M−1 cm−1 for high salt
Ellman's_reagent
with attenuation coefficient; see attenuation coefficient for details; molar absorption coefficient or molar extinction coefficient, also called molar
Mathematical descriptions of opacity
Mathematical_descriptions_of_opacity
Process in molecular biology
the absorbing molecule. At a wavelength of 260 nm, the average extinction coefficient for double-stranded DNA (dsDNA) is 0.020 (μg/mL)−1 cm−1, for single-stranded
Nucleic_acid_quantitation
Form of electromagnetic radiation
surface of a semiconductor wafer, the index of refraction (n) and the extinction Coefficient (k) can be determined via the Forouhi–Bloomer dispersion equations
Infrared
Symbols for constants, special functions
elasticity in economics electromotive force in chemistry, the molar extinction coefficient of a chromophore in mathematics, a surreal number that is bigger
Greek letters used in mathematics, science, and engineering
Greek_letters_used_in_mathematics,_science,_and_engineering
Branch of spectroscopy
it is necessary to know the extinction coefficient of this mixture at two wavelengths and the extinction coefficients of solutions that contain the
Spectrophotometry
Chemical data page
UV-Vis λmax 55 nm Extinction coefficient, ε ? IR Major absorption bands 2143 cm−1 13CO 2099.2 ± 4 cm−1 NMR Proton NMR Carbon-13 NMR Other NMR data
Carbon_monoxide_(data_page)
Light harvesting protein
Absorption peak 625 nm Emission maximum 657.5 nm Stokes Shift 5.5 nm Extinction Coefficient 700,000 M−1cm−1 Quantum Yield 0.68 Brightness 1.6 × 105 M−1cm−1
Allophycocyanin
Genetic mutant of green fluorescent protein
maturation, and increased brightness (defined as the product of the extinction coefficient and quantum yield). Typically, YFP serves as the acceptor for genetically-encoded
Yellow_fluorescent_protein
Manufacturing process used to create integrated circuits
of gate oxide, as well as the thickness, refractive index, and extinction coefficient of photoresist and other coatings. Wafer metrology equipment/tools
Semiconductor device fabrication
Semiconductor_device_fabrication
Photochemical energy transfer mechanism
ϵ A {\displaystyle \epsilon _{\text{A}}} is the acceptor molar extinction coefficient, normally obtained from an absorption spectrum. The orientation
Förster resonance energy transfer
Förster_resonance_energy_transfer
tunable emission spectra, slow excited state decay rates and high extinction coefficient resulting in strong fluorescence. The ability to conjugate quantum
Nanoco
Organic dye
of the cation results from a strong absorption band at 621 nm (extinction coefficient of 105 M−1 cm−1). Malachite green is prepared by the condensation
Malachite_green
Fifth letter of the Greek alphabet
ε denotes the axial tilt. In chemistry, it represents the molar extinction coefficient of a chromophore. In economics, ε refers to elasticity. In statistics
Epsilon
Photochromic organic chemical compound
Because of the apparent conjugated system after UV illumination the extinction coefficient of the MC-form is significantly higher than that of the closed spiropyran
Spiropyran
Chemical data page
UV-Vis λmax ? nm Extinction coefficient, ε ? IR Major absorption bands ? cm−1 NMR Proton NMR Carbon-13 NMR Other NMR data MS Masses of main fragments
Cocaine_(data_page)
Supramolecular structures held together other than by covalent bonds
\varepsilon _{i,\lambda }} is the molar absorbance (also known as the extinction coefficient) of the ith chemical species at the wavelength λ {\displaystyle
Host–guest_chemistry
Chemical compound
properties. These dyes are usually intensely colored and have large extinction coefficients. Merocyanine 540 was the first fluorescent dye used for measuring
Merocyanine
Method of spatial measurement using laser
and densities of clouds, cloud particle properties (extinction coefficient, backscatter coefficient, depolarization), temperature, pressure, wind, humidity
Lidar
Situation or phenomena, When light bounces off a material with a low index of refraction
taking into account β ( ω ) {\displaystyle \beta (\omega )} as an extinction coefficient shows that the refracted ray penetrates slightly into the material
Total_external_reflection
Scientific investigative technique
and the extinction coefficient is the amount of light that can be absorbed by a fluorophore. Both the quantum yield and extinction coefficient are specific
Fluorescence in the life sciences
Fluorescence_in_the_life_sciences
3,4,5-Trihydroxybenzoic acid
UV-Vis Lambda-max: 220, 271 nm (ethanol) Extinction coefficient (log ε) IR Major absorption bands ν : 3491, 3377, 1703, 1617, 1539, 1453, 1254 cm−1 (KBr)
Gallic_acid
Green bile pigment
peroxide and uses the chromophore biliverdin. smURFP has a large extinction coefficient (180,000 M−1 cm−1) and has a modest quantum yield (0.20), which
Biliverdin
Chemical compound
or less efficiently a krypton laser at 567 nm. The absorption extinction coefficient at 596 nm is about 85,000 M−1cm−1. The compound is usually a mixture
Texas_Red
Feature observed in spectroscopy
to the individual components, k, at concentration, ck. ε is an extinction coefficient. In such cases the curve of experimental data may be decomposed
Spectral_line_shape
Chemical data page
UV-Vis λmax ? nm Extinction coefficient, ε ? IR Major absorption bands 2347 and 667 cm−1 (4.26 and 14.99 um) NMR Proton NMR not applicable Carbon-13 NMR
Carbon_dioxide_(data_page)
Inelastic scattering of photons by matter
lidar is used in atmospheric physics to measure the atmospheric extinction coefficient and the water vapour vertical distribution. Due to its velocity-selective
Raman_scattering
Observation of distant objects on Earth's surface or terrestrial features
As twilight progresses most of the atmospheric aerosols have an extinction coefficient decreasing in magnitude with increasing wavelength. The moonlight
Long_distance_observations
Protein that exhibits bright green fluorescence when exposed to ultraviolet light
allowed the practical use of GFPs in mammalian cells. EGFP has an extinction coefficient (denoted ε) of 55,000 M−1cm−1. The fluorescence quantum yield (QY)
Green_fluorescent_protein
Type of mathematical relation
{n}}=n+i\kappa } of a medium, where κ {\displaystyle \kappa } is the extinction coefficient. Hence, in effect, this also applies for the complex relative permittivity
Kramers–Kronig_relations
= absorption coefficient = Na𝜎a; μs = scattering coefficient = Ns𝜎s; g = scattering anisotropy = <cos(𝛳)>; μt = extinction coefficient = μa + μs Where
Collimated transmission theory
Collimated_transmission_theory
Used to determine total hardness of water
experimental points are plotted as per Beer’s law: A= E*c*l where E= molar extinction coefficient and l= optical path length usually 1 cm. Second step is to measure
Complexometric_titration
determined by the relative refractive index μt = μa + μs is the extinction coefficient P ( s ^ ′ , s ^ ) {\displaystyle P({\hat {s}}',{\hat {s}})} is the
Radiative transfer equation and diffusion theory for photon transport in biological tissue
Radiative_transfer_equation_and_diffusion_theory_for_photon_transport_in_biological_tissue
Dimensionless quantity that characterizes plant canopies
factoring in the leaf angle distribution, solar zenith angle, and plant extinction coefficient. Such indirect methods, where LAI is calculated based upon observations
Leaf_area_index
Hypothetical shielding of an object from gravity
at the beginning of 20th century Quirino Majorana suggested an extinction coefficient h that modifies Newton's gravitational force law as follows: F =
Gravitational_shielding
Chemical data page
UV-Vis λmax ? nm Extinction coefficient, ε ? IR Major absorption bands ? cm−1 NMR Proton NMR Carbon-13 NMR Other NMR data MS Masses of main fragments
Isobutane_(data_page)
Chemical data page
UV-Vis Lambda-max ? nm Extinction coefficient ? IR Major absorption bands ? cm−1 NMR Proton NMR Carbon-13 NMR Other NMR data MS Masses of main fragments
Lithium_chloride_(data_page)
Type of laser with two counter-rotating beams
indispensable. At this time, the main limitation of mirrors is the extinction coefficient of the evaporated high-index material TiO2. The size and shape of
Ring_laser
Chemical compound
[Ru(bpy)3]Cl2 are orange due to a strong MLCT absorption at 452 ± 3 nm (extinction coefficient of 14,600 M−1cm−1). Further absorption bands are found at 285 nm
Tris(bipyridine)ruthenium(II) chloride
Tris(bipyridine)ruthenium(II)_chloride
Simplest diazo compound and methylating agent
Et2O can be determined spectrophotometrically at 410 nm where its extinction coefficient, ε, is 7.2. The gas-phase concentration of diazomethane can be determined
Diazomethane
Chemical data page
UV-Vis λmax ? nm Extinction coefficient, ε ? IR Major absorption bands (liquid film) Wave number transmittance 3347 cm−1 6% 3336 cm−1 8% 2945 cm−1 18%
Methanol_(data_page)
Fabrication at micrometre scales and smaller
characteristics in terms of thickness (t), refractive index (n) and extinction coefficient (k), for suitable device behavior. For example, in memory chip fabrication
Microfabrication
Use of reflected waves to analyze objects and interfaces
dispersion equations can determine the thickness, refractive index, and extinction coefficient of thin films utilized in the semiconductor industry. X-ray reflectometry:
Reflectometry
Chemical data page
UV-Vis λmax 280 nm Extinction coefficient, ε 12.4 L/(mol·cm) @ 280 nm IR Major absorption bands (liquid film) Wave number Transmittance 3414 cm−1 78% 3005 cm−1
Acetone_(data_page)
Chemical data page
UV-Vis λmax 205 nm Extinction coefficient, ε 100.2 m2/mol IR Major absorption bands 3334, 2970, 1466, 1378, 1160, 1128, 951, 817, 639 cm−1 NMR Proton NMR
Isopropyl_alcohol_(data_page)
Chemical data page
UV-Vis λmax ? nm Extinction coefficient, ε ? IR Major absorption bands 974 cm−1 NMR Proton NMR Carbon-13 NMR Other NMR data MS Masses of main fragments
Ethylene_(data_page)
Chemical element with atomic number 44 (Ru)
Robin; Zakeeruddin, Shaik M.; Grätzel, Michael (2006). "High Molar Extinction Coefficient Heteroleptic Ruthenium Complexes for Thin Film Dye-Sensitized Solar
Ruthenium
Chemical data page
UV-Vis λmax ? nm Extinction coefficient, ε ? IR Major absorption bands ? cm−1 NMR Proton NMR 3.3-3.7 ppm Carbon-13 NMR 62-65 ppm Other NMR data MS Masses
Ethylene_glycol_(data_page)
Chemical data page
UV-Vis λmax ? nm Extinction coefficient, ε ? IR Major absorption bands ? cm−1 NMR Proton NMR 3.479 ppm, 1.208 ppm Carbon-13 NMR 65.97 ppm, 15.35 ppm Other
Diethyl_ether_(data_page)
Optical technique for characterizing thin films
manufacturing because a library of known Refractive index (n) and Extinction coefficient (k) for the materials used during manufacturing can be developed
Ellipsometry
Chemical data page for ethanol
UV-Vis λmax ? nm Extinction coefficient, ε ? IR Major absorption bands (liquid film) Wave number transmittance 880 cm−1 22% 1048 cm−1 6% 1089 cm−1 19%
Ethanol_(data_page)
Protein complexes in algae
R-Phycocyanin Absorption maximum (nm) 621 533, 544 Emission maximum (nm) 642 646 Extinction Coefficient (ε) 1.54 × 106 M−1cm−1 - Quantum Yield 0.81 -
Phycocyanin
Chemical compound
increase the rate of curing. It absorbs very weakly at 468 nm (extinction coefficient of 40 M−1·cm−1) giving it a pale yellow color. Photoexcitation results
Camphorquinone
Non-destructive type of ultrasonics
ultrasonics is based on the photoelastic effect. The refractive index and extinction coefficient near the surface of the solid are perturbed by the returning strain
Picosecond_ultrasonics
Effect of a material on light
by the imaginary part of the refractive index (also called the extinction coefficient). In particular, for non-magnetic materials (μ = μ0), the susceptibility
Dispersion_(optics)
Blue-colored dye
Trypan blue is also known as diamine blue and Niagara blue. The extinction coefficient for trypan blue is 6⋅104 M−1 cm−1 at 607 nm in methanol. Trypan
Trypan_blue
EXTINCTION COEFFICIENT
EXTINCTION COEFFICIENT
EXTINCTION COEFFICIENT
Boy/Male
Hindu, Indian
Lord of Dharma
Girl/Female
Tamil
Hemalatha | ஹேமலதா
Golden creeper, Golden wine
Boy/Male
Tamil
Girl/Female
Hindu, Indian, Marathi, Sanskrit
Belonging to Energy
Girl/Female
Indian, Marathi
Part of God Shiv
Boy/Male
Hindu, Indian
Gift of Buddha
Boy/Male
Gujarati, Hindu, Indian, Kannada, Malayalam, Marathi, Oriya, Sanskrit, Telugu, Traditional
King Among Men
Boy/Male
Hindu
Girl/Female
Greek
Pure.
Boy/Male
Gujarati, Hindu, Indian, Kannada, Malayalam, Marathi, Sanskrit, Telugu
Lord Vishnu
EXTINCTION COEFFICIENT
EXTINCTION COEFFICIENT
EXTINCTION COEFFICIENT
EXTINCTION COEFFICIENT
EXTINCTION COEFFICIENT
n.
The annihilation or extinction of a right or obligation.
n.
Good extraction; dignity of birth.
v. i.
Total privation or loss; extinction; cessation; as, the death of memory.
n.
Descent; pedigree; extraction.
n.
A building up; construction.
n.
State of being extinguished or of ceasing to be; destruction; suppression; as, the extinction of life, of a family, of a quarrel, of claim.
n.
A coming to a close; cessation; extinction; termination; end.
n.
The act of extracting, or drawing out; as, the extraction of a tooth, of a bone or an arrow from the body, of a stump from earth, of a passage from a book, of an essence or tincture.
n.
Extinction.
a.
Of mean extraction.
n.
The act of tingeing or dyeing.
n.
End; conclusion; termination; extinction.
n.
Act of wasting away; a consuming; extinction.
n.
Act of quenching or extingishing.
n.
Extraction.
n.
A method or practice of the administration of the sacrament by dipping the bread or wafer in the wine and administering both together.
n.
Extraction; descent.
n.
Lineage; extraction; descent; sometimes, high birth; noble extraction.
n.
The act of obliterating, or the state of being obliterated; extinction.
n.
The act of extinguishing or making extinct; a putting an end to; the act of putting out or destroying light, fire, life, activity, influence, etc.