Matches in DBpedia 2015-10 for { ?s ?p "In optics, piston is the mean value of a wavefront or phase profile across the pupil of an optical system. The piston coefficient is typically expressed in wavelengths of light at a particular wavelength. Its main use is in curve-fitting wavefronts with Cartesian polynomials or Zernike polynomials. However, similar to a real V8 engine piston moving up and down in its cylinder, optical piston values can be changed to bias the wavefront phase mean value as desired."@en }
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- Piston_(optics) comment "In optics, piston is the mean value of a wavefront or phase profile across the pupil of an optical system. The piston coefficient is typically expressed in wavelengths of light at a particular wavelength. Its main use is in curve-fitting wavefronts with Cartesian polynomials or Zernike polynomials. However, similar to a real V8 engine piston moving up and down in its cylinder, optical piston values can be changed to bias the wavefront phase mean value as desired.".