Photometer vs. Spectrometer

Photometernoun

(physics) Any of several instruments used to measure various aspects of the intensity of light.

Photometerverb

(astronomy) To measure some aspect of light (from a star) using a photometer.

Photometernoun

An instrument for measuring the intensity of light, or, more especially, for comparing the relative intensities of different lights, or their relative illuminating power.

Photometernoun

measuring instrument for measuring the luminous intensity of a source by comparing it (visually or photoelectrically) with a standard source

Photometernoun

photographic equipment that measures the intensity of light

Photometernoun

an instrument for measuring the intensity of light.

Photometer

A photometer is an instrument that measures the strength of electromagnetic radiation in the range from ultraviolet to infrared and including the visible spectrum. Most photometers convert light into an electric current using a photoresistor, photodiode, or photomultiplier.

Spectrometernoun

(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.

Spectrometernoun

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

Spectrometernoun

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

Spectrometer

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.