diffraction grating
Học thuậtThân thiện
A scientist uses a diffraction grating to separate white light into a rainbow.
Definition
- Noun:
- An optical device with a surface containing many closely spaced parallel lines or grooves: A diffraction grating is a scientific instrument used to separate light or other electromagnetic radiation into its component wavelengths, creating a spectrum.
Usage
- Noun:
- The scientist used a diffraction grating to analyze the light from the distant star.
- In the physics lab, we observed the rainbow pattern produced when a laser beam passed through a diffraction grating.
Advanced Usage
- "Reflection grating": A type of diffraction grating where the grooves are designed to reflect light, commonly used in spectrometers.
- The spectrometer was equipped with a high-quality reflection grating.
- "Transmission grating": A type of diffraction grating where light passes through the grooved surface.
- For this experiment, a transmission grating is more suitable than a reflective one.
Variants and Related Words
- Grating (n): Often used as a shortened, informal term for a diffraction grating in laboratory settings.
- Align the laser with the grating to observe the diffraction pattern.
- Spectrometer (n): An instrument that often incorporates a diffraction grating to measure properties of light.
- The spectrometer's core component is a precision diffraction grating.
Synonyms
- Optical grating: A more general term.
- Spectroscope element: Describes its function within a specific instrument.
Related Phrases
- Diffraction pattern: The pattern of light and dark bands or colored spectrum produced when waves encounter a grating or obstacle.
- The diffraction pattern revealed the light's constituent colors.
- Line spacing (of a grating): Refers to the distance between adjacent grooves, a critical parameter determining its performance.
- The grating's resolution depends on its line spacing.
A scientist uses a diffraction grating to separate white light into a rainbow.
Noun
- optical device consisting of a surface with many parallel grooves in it; disperses a beam of light (or other electromagnetic radiation) into its wavelengths to produce its spectrum