1. an instrument that separates light or other radiation into its component wavelengths and records the resulting spectrum
Usage: scientific

Examples

• The astronomer used a spectrograph to analyze the light from distant stars.
• The spectrograph revealed the chemical composition of the unknown substance.
• Modern spectrographs can detect extremely faint spectral lines.
• The laboratory’s new spectrograph produces highly detailed spectrum images.
• Scientists attached the spectrograph to the telescope to study stellar atmospheres.
• The spectrograph data showed clear evidence of hydrogen in the sample.