spectrum analysis

American  

noun

1. the determination of the constitution or condition of bodies and substances by means of the spectra they produce.

2. the ascertaining of the number and character of the constituents combining to produce a sound spectrogram.

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spectrum analysis British  

noun

1. the analysis of a spectrum to determine the properties of its source, such as the analysis of the emission spectrum of a substance to determine the electron distribution in its molecules

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Etymology

Origin of spectrum analysis

First recorded in 1865–70

Example Sentences

There was no definitive evidence of malfunctioned electrical wiring, even though the sound spectrum analysis of the explosion was consistent with an electrical one.

From Time

In the case of incandescent vapours, the exact correspondence of emission and absorption as regards wave-length of frequency of the light emitted and absorbed forms the foundation of the science of spectrum analysis.

From Project Gutenberg

The silver produced �736, and the interest on that sum is expended on the Davy medal, which was awarded for the first time in 1877, to Bunsen and Kirchhoff for their discovery of spectrum analysis.

From Project Gutenberg

And should we satisfy their want of knowledge by giving them spectrum analysis, a survey of the Milky Way, speculative geometry, microscopic investigations, controversies concerning spiritualism and mediumism, the activity of academies of science?

From Project Gutenberg

"May I ask, while my friend makes the necessary preparations for the spectrum analysis and the chemical investigation, whether you are in the habit of associating much with—er—well, with other ghosts?"

From Project Gutenberg