Spectrometer vs. Spectrophotometer — What's the Difference?

A spectrometer () is a scientific instrument used to separate and measure spectral components of a physical phenomenon. Spectrometer is a broad term often used to describe instruments that measure a continuous variable of a phenomenon where the spectral components are somehow mixed.

An instrument used to determine the relative intensity of various wavelengths in a spectrum of light.

A spectroscope equipped with scales for measuring wavelengths or indexes of refraction.

(physics) An instrument used to measure the intensity of electromagnetic radiation at different wavelengths.

(analytical chemistry) An optical instrument for measuring the absorption of light by chemical substances; typically it will plot a graph of absorption versus wavelength or frequency, and the patterns produced are used to identify the substances present, and their internal structure.

An instrument for measuring or comparing the intensities of the colors of the spectrum.

A spectroscope fitted for measurements of the luminious spectra observed with it.

An analytical instrument for measuring the degree of absorption of light at different wavelengths by a chemical substance. A specific pattern of absorption intensities at a series of wavelengths is a characteristic of each different chemical substance.

Spectroscope for obtaining a mass spectrum by deflecting ions into a thin slit and measuring the ion current with an electrometer

A photometer for comparing two light radiations wavelength by wavelength