Nthumwi [Fi: tik] ndi pulogalamu yosinthira deta ndi osagwirizana kupindika koyenera.

Makamaka amagwiritsidwa ntchito

• ndi asayansi Omwe amasanthula deta kuchokera ku ufa, cromatoctory, Photolinections ndi Photolectinent Spestrocopy, infrared ndi Raman Speproscopy, ndi njira zina zoyesera,

• Kukwanira nsonga - ntchito zopangidwa ndi belu (Gaustian, Lorentzian, Wokhazikika, Pearsson VII, BIITANCATIC Gii, Emg, Sukulu-Suusian, emg.),