grating

Examples of grating in the following topics:

• Diffraction Gratings: X-Ray, Grating, Reflection

  • The directions of these beams depend on the spacing of the grating and the wavelength of the light so that the grating acts as the dispersive element.
  • A photographic slide with a fine pattern of purple lines forms a complex grating.
  • For practical applications, gratings generally have ridges or rulings on their surface rather than dark lines.
  • Such gratings can be either transmissive or reflective.
  • An opal is another example of diffraction grating that reflects the light into different colors.

• The Spectrometer

  • The instrument produces lines, much like those produced from diffraction grating as covered in a previous atom, and then measures the wavelengths and intensities of those lines.
  • The source is placed in front of a mirror, which reflects the light emitted from that object onto a diffraction grating.
  • This grating then disperses the emitted light to anther mirror which spreads the different resultant wavelengths and reflects them onto a detector which records the findings.
  • They use a diffraction grating, movable slit, and a photodetector.

• Diffraction

  • A good example would be diffraction gratings.
  • For example, the closely spaced tracks on a CD or DVD act as a diffraction grating to form the familiar rainbow pattern seen when looking at a disk.
  • This principle can be extended to engineer a grating with a structure such that it will produce any diffraction pattern desired, like the hologram on a credit card.

• Diffraction Revisited

  • The periodic structure of a crystalline solid acts as a diffraction grating, scattering the electrons in a predictable manner.