Nyob rau hauv qhov sib txawv no qhov xwm txheej thiab qhov sib txawv yoj pem hauv ntej yog spherical lossis cylindrical (b) Fraunhoffer diffraction: Hauv fraunhoffer diffraction, lub teeb qhov chaw thiab qhov taw qhia kev soj ntsuam nyob ntawm qhov kev ncua deb ntawm lub teeb meem. uas yog, qhov xwm txheej thiab qhov sib txawv wavefronts yog dav hlau.
Lub wavefront twg yog siv hauv Fresnel diffraction?
Kev piav qhia: Hauv Fresnel Diffraction, kev cuam tshuam tshwm sim ntawm lub teeb nthwv dej mus txog qhov taw tes los ntawm ntau qhov chaw ntawm tib lub wavefront. Yog li, qhov xwm txheej wavefront yog spherical lossis cylindrical.
Dab tsi tshwm sim hauv Fresnel diffraction?
"Fresnel diffraction" txhais tau tias yog qhov tshwm sim ntawm qhov sib txawv qhov twg ntawm ib qho khoom siv hluav taws xob thiab qhov chaw soj ntsuam lossis ob qho tib si nyob ntawm qhov deb kawg ntawm ib qho khoom, yog li qhov xwm txheej nthwv dej lossis tawm nthwv dej tsis tuaj yeem suav tias yog lub dav hlau nthwv dej.
Dab tsi tshwm sim hauv Fraunhofer diffraction?
Thaum ib lub teeb ci ntsa iab los ntawm ib qho kev cuam tshuam, qee qhov ntawm lub teeb tau tawg nyob ib ncig ntawm cov khoom, lub teeb thiab tsaus nti feem ntau pom ntawm ntug ntxoov ntxoo - Cov nyhuv no hu ua diffraction. Cov teebmeem no tuaj yeem ua qauv siv lub hauv paus ntsiab lus Huygens-Fresnel.
Fraunhofer diffraction yog dab tsi piav qhia luv luv?
Fraunhofer diffraction yog hom diffraction uas tshwm sim nyob rau hauv qhov txwv ntawm me me Fresnel naj npawb. Hauv Fraunhofer diffraction, tus qauv diffraction yog ywj siab ntawm qhov kev ncua deb ntawm lub vijtsam, nyob ntawm seb lub kaum sab xis ntawm lub vijtsam los ntawm qhov aperture xwb.
