22 relations: Absorbance, Amino acid, Avogadro constant, Beer–Lambert law, Biochemistry, Chemical species, Common logarithm, Cross section (physics), Fluorescent protein, International System of Units, Intrinsic and extrinsic properties, Isosbestic point, Mass attenuation coefficient, Molar concentration, Molar mass, Mole (unit), Natural logarithm, Nucleic acid, Protein, System of equations, Tryptophan, Wavelength.

## Absorbance

In chemistry, absorbance or decadic absorbance is the common logarithm of the ratio of incident to transmitted radiant power through a material, and spectral absorbance or spectral decadic absorbance is the common logarithm of the ratio of incident to transmitted spectral radiant power through a material.

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## Amino acid

Amino acids are organic compounds containing amine (-NH2) and carboxyl (-COOH) functional groups, along with a side chain (R group) specific to each amino acid.

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## Avogadro constant

In chemistry and physics, the Avogadro constant (named after scientist Amedeo Avogadro) is the number of constituent particles, usually atoms or molecules, that are contained in the amount of substance given by one mole.

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## Beer–Lambert law

The Beer–Lambert law, also known as Beer's law, the Lambert–Beer law, or the Beer–Lambert–Bouguer law relates the attenuation of light to the properties of the material through which the light is travelling.

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## Biochemistry

Biochemistry, sometimes called biological chemistry, is the study of chemical processes within and relating to living organisms.

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## Chemical species

A chemical species is a chemical substance or ensemble composed of chemically identical molecular entities that can explore the same set of molecular energy levels on a characteristic or delineated time scale.

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## Common logarithm

In mathematics, the common logarithm is the logarithm with base 10.

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## Cross section (physics)

When two particles interact, their mutual cross section is the area transverse to their relative motion within which they must meet in order to scatter from each other.

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## Fluorescent protein

Fluorescent proteins include.

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## International System of Units

The International System of Units (SI, abbreviated from the French Système international (d'unités)) is the modern form of the metric system, and is the most widely used system of measurement.

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## Intrinsic and extrinsic properties

An intrinsic property is a property of a system or of a material itself or within.

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## Isosbestic point

In spectroscopy, an isosbestic point is a specific wavelength, wavenumber or frequency at which the total absorbance of a sample does not change during a chemical reaction or a physical change of the sample.

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## Mass attenuation coefficient

The mass attenuation coefficient, mass extinction coefficient, or mass narrow beam attenuation coefficient of the volume of a material characterizes how easily it can be penetrated by a beam of light, sound, particles, or other energy or matter.

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## Molar concentration

Molar concentration (also called molarity, amount concentration or substance concentration) is a measure of the concentration of a chemical species, in particular of a solute in a solution, in terms of amount of substance per unit volume of solution.

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## Molar mass

In chemistry, the molar mass M is a physical property defined as the mass of a given substance (chemical element or chemical compound) divided by the amount of substance.

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## Mole (unit)

The mole, symbol mol, is the SI unit of amount of substance.

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## Natural logarithm

The natural logarithm of a number is its logarithm to the base of the mathematical constant ''e'', where e is an irrational and transcendental number approximately equal to.

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## Nucleic acid

Nucleic acids are biopolymers, or small biomolecules, essential to all known forms of life.

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## Protein

Proteins are large biomolecules, or macromolecules, consisting of one or more long chains of amino acid residues.

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## System of equations

In mathematics, a set of simultaneous equations, also known as a system of equations or an equation system, is a finite set of equations for which common solutions are sought.

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## Tryptophan

Tryptophan (symbol Trp or W) is an α-amino acid that is used in the biosynthesis of proteins.

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## Wavelength

In physics, the wavelength is the spatial period of a periodic wave—the distance over which the wave's shape repeats.

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## Redirects here:

Absorbancy, Absorbency index, Absorption constant, Absorptive power, Molar absorbtivity, Molar absorption coefficient, Molar absorptivity, Molar extinction, Molar extinction coefficient, Molar extinction coefficients.

## References

[1] https://en.wikipedia.org/wiki/Molar_attenuation_coefficient