Fitik [fi:tik] bernameyeke ji bo danasîna daneyan û nehêl e bihevhatina curve.

Di serî de tê bikaranîn

• ji zanyar who analyse data from powder diffraction, chromatography, photoluminescence and photoelectron spectroscopy, infrared and Raman spectroscopy, and other experimental techniques,

• to fit peaks – bell-shaped functions (Gaussian, Lorentzian, Voigt, Pearson VII, bifurcated Gaussian, EMG, Doniach-Sunjic, etc.),