monochromator
/ˌmɑnəˈkroʊməˌteɪtər/
noun
- A scientific instrument that selects a single narrow band of wavelengths of light from a broader spectrum.
- The lab technician adjusted the monochromator to isolate a specific shade of blue light.
- In the chemistry experiment, the monochromator helped measure how much light the sample absorbed.
- The telescope's monochromator allowed astronomers to study the light from a distant star in fine detail.