Feem ntau, qhov dielectric qhov tsis tu ncua tuaj yeem txhais tau tias yog qhov piv ntawm qhov tseeb permittivity absolute permittivity Tus txheeb ze permittivity ntawm cov kuab tshuaj yog ntsuas txheeb ze ntawm nws cov tshuaj polarity. Piv txwv li, dej yog polar heev, thiab muaj tus txheeb ze zoo li qub permittivity ntawm 80.10 ntawm 20 ° C thaum n-hexane tsis yog-polar, thiab muaj tus txheeb ze permittivity ntawm 1.89 ntawm 20 ° C. https://en.wikipedia.org › wiki › Relative_permittivity
Txoj kev sib raug zoo - Wikipedia
ntawm ib yam khoom rau qhov kev tso cai ntawm qhov chaw dawb. Ntawm qhov chaw nyob ib puag ncig, qhov dielectric qhov tsis tu ncua ntawm kua dej nyob ib puag ncig 78.4 (Fernandez li al., 1995, 1997).
Puas dej muaj dielectric tas li?
Teb: Dej muaj qhov dielectric siab tas li. Dej tsis zoo li lwm yam khoom nyob rau hauv uas nws muaj dielectric siab tas li. … Nws txhais tau hais tias nyob rau hauv ib qho kev daws, cov dej molecules yuav nyob ib puag ncig ob qho tib si anions thiab cations, txo qhov kev nyiam ntawm ob qhov nqi.
Puas yog dielectric tas li ntawm dej siab lossis qis?
Dej muaj qhov dielectric siab tas livim tias cov dej molecule muaj lub sijhawm dipole thiab yog li nws tuaj yeem ua polarized. Nyob rau hauv ib qho chaw hluav taws xob, dej zoo li polarize, yuav luag tshem tawm cov txiaj ntsig ntawm thaj teb.
Dab tsi yog qhov dielectric ntawm H2O?
Lub dielectric qhov tsis tu ncua ntawm H2O yog 80.
Ice puas yog dielectric?
Thaum 0 ° C dej thiab dej khov ua ke nyob rau hauv qhov sib npaug ntawm qhov ntsuas kub. Qhov no ua rau nws muaj peev xwm los sib piv lawv cov khoom hluav taws xob kom raug thiab tshawb xyuas cov tshuab microscopic lub luag haujlwm rau cov khoom no. Ob yam khoom yog dielectrics nrog qhov dav hluav taws xob sib txawv, ~ 5 eV [1].
