关于真空中的位移电流_Maxwell方程组_省略_磁场的源及Jefimenko(7)

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大　学　物　理　　　　　　　　　　　　　　　　第22卷

Adiscussionontherelationbetweenthegravitationaffectingthe

SunintheGalaxyandthedistancertothecenteroftheGalaxy

XIAOBo2jun

(DepartmentofPhysics,ChengdouTeachersCollege,,　　Abstract:Thedistributionofthestrengthoftheinandthere2

lationbetweenthegravitationaffectingtheSuninandrfromtheSuntothecenteroftheGalaxyarediscussed.Thenotinverselyproportionaltothesquareofr.ItispointedoutofthesizeandshapeoftheGalaxyandtheconditiongravitationisusedisemphasized.

K:;theofthestrengthofthegravitationalfield;inverse2square

(上接8页)

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Notesonthevacuumdisplacementcurrent,Maxwell’sequations,thesourceofanelectromagneticfield,andJefimenko’sformulas

ZHUHong2yu,XIEShi2chong

(NeijiangTeachersCollege,Neijiang,Sichuan,641002,China)

　　Abstract:Theelectromagneticfieldisanindivisiblewhole,Maxwell’sequationsaretheequations

ofmotionoftheelectromagneticfield,Thesourceofanelectromagneticfieldisadistributionofelectricchargeandcurrent,andtheJefimenko’sformulasaresolutionsofMaxwell’sequationsinvacuum.

Keywords:electromagneticfield;Maxwell’sequations;Jefimenko’sformulas

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