The measurement of the amplitude of the components of a complex waveform throughout the frequency range of the waveform. (McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed)
    

concept

Browning's spectroscopes : spectrum apparatus for the microscope ... / John Browning.

Nanomaterials characterisation / Horriba Jobin Yvon.

Die Anwendung des Spectralapparates zur Photometrie der Absorptionsspectren und zur quantitativen chemischen Analyse / von Karl Vierordt.

Traité élémentaire de spectroscopie / [Georges Salet].

Spectrophotometry in medicine / translated by A. Jordan and T. L. Tippell.

Spectroscopy / by E.C.C. Baly.

The sunbeam and the spectrascope / by Howard Townsend.

IM spectrofluorescence imaging systems / SPEX.

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Traité élémentaire de spectroscopie / [Georges Salet].

Spectrophotometry in medicine / translated by A. Jordan and T. L. Tippell.

Spectroscopy / by E.C.C. Baly.

The sunbeam and the spectrascope / by Howard Townsend.

IM spectrofluorescence imaging systems / SPEX.