spectrograph
/'spektrougrɑ:f/
Definition
- Noun:
- A photographic record of a spectrum: A spectrograph is a permanent image, typically on film or a digital sensor, that displays the intensity of light at different wavelengths, creating a visual representation of a spectrum.
- A spectroscope by which spectra can be photographed: A spectrograph is also the scientific instrument itself, a type of spectroscope equipped with a camera or detector to record spectra.
Examples of Usage
- Noun:
- The astronomer analyzed the spectrograph to determine the star's chemical composition.
- The laboratory uses a high-resolution spectrograph to capture detailed spectra of materials.
Advanced Usage
- "Mass spectrograph": A specific type of spectrograph used to separate and record ions by their mass-to-charge ratio, forming the basis of mass spectrometry.
- The forensic team used a mass spectrograph to identify the unknown substance.
Variants and Related Words
- Spectrographic (adj): Relating to or produced by a spectrograph.
- The spectrographic analysis revealed new details.
- Spectrography (n): The technique or process of using a spectrograph.
- Spectrography is essential in modern astrophysics.
Synonyms
- Spectrometer: An instrument for measuring properties of light over a specific portion of the spectrum, often used interchangeably with spectrograph when it records data.
- Spectroscope: An optical instrument for forming and examining spectra, especially by visual observation (a spectrograph typically adds a recording capability).
Related Phrases
- "To obtain/take a spectrograph": The action of recording a spectrum using the instrument.
- The researchers needed to obtain a spectrograph of the plasma emission.
Noun
-
a photographic record of a spectrum
-
a spectroscope by which spectra can be photographed
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