Absorption spectroscopy and Molecule

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Difference between Absorption spectroscopy and Molecule

Absorption spectroscopy vs. Molecule

Absorption spectroscopy refers to spectroscopic techniques that measure the absorption of radiation, as a function of frequency or wavelength, due to its interaction with a sample. A molecule is an electrically neutral group of two or more atoms held together by chemical bonds.

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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Atom

An atom is the smallest constituent unit of ordinary matter that has the properties of a chemical element.

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Emission spectrum

The emission spectrum of a chemical element or chemical compound is the spectrum of frequencies of electromagnetic radiation emitted due to an atom or molecule making a transition from a high energy state to a lower energy state.

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Frequency

Frequency is the number of occurrences of a repeating event per unit of time.

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Infrared spectroscopy

Infrared spectroscopy (IR spectroscopy or vibrational spectroscopy) involves the interaction of infrared radiation with matter.

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Light

Light is electromagnetic radiation within a certain portion of the electromagnetic spectrum.

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Microwave spectroscopy

Microwave spectroscopy is the spectroscopy method that employs microwaves, i.e. electromagnetic radiation at GHz frequencies, for the study of matter.

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Molecular geometry

Molecular geometry is the three-dimensional arrangement of the atoms that constitute a molecule.

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Molecular mass

Relative Molecular mass or molecular weight is the mass of a molecule.

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Noble gas

The noble gases (historically also the inert gases) make up a group of chemical elements with similar properties; under standard conditions, they are all odorless, colorless, monatomic gases with very low chemical reactivity.

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Quantum mechanics

Quantum mechanics (QM; also known as quantum physics, quantum theory, the wave mechanical model, or matrix mechanics), including quantum field theory, is a fundamental theory in physics which describes nature at the smallest scales of energy levels of atoms and subatomic particles.

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Spectral density

The power spectrum S_(f) of a time series x(t) describes the distribution of power into frequency components composing that signal.

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