Video: Lub SI unit ntawm Epsilon yog dab tsi?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Hauv electromagnetism , qhov tseeb kev tso cai , feem ntau tsuas yog hu ua kev tso cai thiab txhais los ntawm Greek tsab ntawv ε ( epsilon ua ), yog ib qho kev ntsuas ntawm hluav taws xob polarizability ntawm dielectric. Cov UA unit rau kev tso cai yog farad per ' meter ' (F / m).
Cov lus nug tseem yog, dab tsi yog SI chav tsev ntawm Epsilon tsis?
Tus nqi ntawm Epsilon Naught Cov kev tso cai ntawm qhov chaw dawb (ε0) yog lub peev xwm ntawm lub tshuab nqus tsev classical tso cai rau hluav taws xob teb. Nws raws li tus nqi txhais tau tias yuav kwv yees li. ε0 = 8.854187817 × 10-12 F.m-1 (Hauv SI Unit ) Sau. ε0 = 8.854187817 × 10-12 C2/N.m2 (In CGS units )
Dab tsi yog ε0 hauv physics? Lub permittivity ntawm qhov chaw dawb, ε0 , yog lub cev tas li siv feem ntau hauv electromagnetism. Nws sawv cev rau lub peev xwm ntawm lub tshuab nqus tsev tso cai rau hluav taws xob teb. Nws tseem txuas nrog lub zog khaws cia hauv qhov chaw hluav taws xob thiab lub peev xwm. Tej zaum qhov xav tsis thoob, nws yog qhov tseem ceeb cuam tshuam nrog kev ceev ntawm lub teeb.
Xav txog qhov no, SI unit ntawm permittivity yog dab tsi?
Cov UA unit rau kev tso cai yog farad per 'meter' (F/m lossis F·m−1). Qhov tsawg tshaj plaws tau kev tso cai yog lub nqus tsev vacuum. Lub tshuab nqus tsev kev tso cai , qee zaum hu ua hluav taws xob tas li, yog sawv cev los ntawm ε0. thiab muaj tus nqi kwv yees li ntawm 8.85 × 10-12 F / m.
Tus nqi ntawm epsilon yog dab tsi?
ε0 = 8.8541878128(13)×10−12 F ⋅m−1 (farads ib meter), nrog ib tug txheeb ze tsis paub tseeb ntawm 1.5 × 10−10., yog kwv yees li 9 × 109 N⋅m2⋅C−2,q1 thiab q2 yog cov nqi, thiab r yog qhov kev ncua deb ntawm lawv.
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