Quick Answer: Diffraction Gratings are optics slides for wavelength determination and observing the visible spectrum, listed with grating densities of 100, 300 and 600 lines/mm. They come in a 50 mm × 50 mm slide format for spectrometers and optical benches.
Last updated: October 2026
Key Features
Grating densities of 100, 300 and 600 lines/mm
50 mm × 50 mm slide format
Used for first- and second-order diffraction maxima
For wavelength determination with a spectrometer or on an optical bench
Technical Specifications
Specification
Value
Grating density
100, 300 and 600 lines/mm
Frame dimensions
50 mm × 50 mm slide format
Use
Wavelength determination and visible spectrum observation
Mounting
Spectrometer, optical bench or 50 mm optical rail holder
About This Product
Students mount a grating so the light falls normally on it, measure the diffraction angle for each spectral order and apply the grating equation to find wavelength. Comparing densities shows how grating pitch changes the diffraction angle and the spread of the spectrum.
Frequently Asked Questions
How does grating density affect the result?
A grating with more lines per mm has a smaller pitch, which gives a larger diffraction angle and wider spectral separation.
.png)
