电流与磁场解读课件

,按一下以編輯母片標題樣式,按一下以編輯母片,第二層,第三層,第四層,第五層,*,10,電磁,III,How is an aurora so thin yet so tall and wide?,10 電磁 III How is an aurora so,Sections,磁場,電流與磁場,Sections磁場,10-1,磁場,The electric field and the magnetic field,Electromagnets and permanent magnets,10-1 磁場The electric field and,10-1.1 The definition of B,10-1.1 The definition of B,The tracks in a bubble chamber,The tracks in a bubble chamber,The SI unit for B,1,tesla=1T=1 N/A,m=10,4,gauss,The SI unit for B1 tesla=1T,Magnetic Field Lines,Magnetic vs.electric dipoles,A horseshoe and a C-shaped magnets,Magnetic Field Lines Magnetic,例,1 A 5.3 MeV proton,例 1 A 5.3 MeV proton,10-1.2 Crossed Fields:Discovery of the Electron,A cathode ray tube,Thomsons procedure:,設定,E=0,B=0,並記錄光點位置,開啟電場,開啟磁場,並調至與電場相等,10-1.2 Crossed Fields:Discove,Calculation,Calculation,10-1.3 Crossed Fields:The Hall Effect,By the conduction electrons in copper:,10-1.3 Crossed Fields:The Hal,例,2 A cube generator,例 2 A cube generator,10-1.4,A Circulating Charged Particle,10-1.4 A Circulating Charged P,The frequency and angular frequency,Helical Paths,頻率與軌跡,The frequency and angular freq,極光橢圓圈,極光橢圓圈,例,3 The Mass Spectrometer(,質譜儀),例 3 The Mass Spectrometer(質譜儀,Isotope Separation,Centrifuge and diffusion chamber,質譜儀,Isotope Separation 質譜儀,The pitch(,螺距),of the helical path,The pitch(螺距)of the helical,10-1.5,Cyclotrons and Synchrotrons,Fermilab:6.3km ring,(迴旋加速器與同步加速器),10-1.5 Cyclotrons and,The resonance condition:,When proton energy 50Mev:,Out of resonance(relativistic effect),A huge magnet(410,6,m,2,)is needed for high energy(500Gev)protons,The proton sychrotron at Fermilab can produces 1Tev proton,Synchrotrons,The resonance condition:Synchr,10-1.6,Magnetic Force on a Current-Carrying Wire,10-1.6 Magnetic Force on a Cur,For a wire segment:,Magnetic Force,For a wire segment:Magnetic F,例,4 A length of wire with a,semicircular,arc,例 4 A length of wire with a se,Calculation,Calculation,線圈,線圈,10-1.7,Torque on A Current Loop,F,2,and F,4,cancel,F,1,and F,3,form a force couple,10-1.7 Torque on A Current Loo,例,5 A galvanometer for,analog,meters,例 5 A galvanometer for analog,10-1.8,The Magnetic Dipole,The magnetic dipole moments,The magnetic potential energy,10-1.8 The Magnetic DipoleThe,磁能,磁能,10-2 Magnetic Fields due to Currents,Conventional rocket EM Rail Gun,10-2 Magnetic Fields due to Cu,10-2.1 Calculating the Magnetic Field due to a current,The law of Biot and Savart,10-2.1 Calculating the Magneti,Magnetic Field Due to a Current in a,Long Straight Wire,Magnetic Field Due to a Curren,Integration,Integration,Magnetic Field Due to a Current in a,Circular Arc of Wire,Magnetic Field Due to a Curren,例,6 What B does the current produce?,例 6 What B does the current pr,10-2.2 Two Parallel Currents,10-2.2 Two Parallel Currents,例,7 The Field Between Two wires,例 7 The Field Between Two wire,10-2.3 Amperes Law,Comparing Gauss,law and Ampere,s law,Amperes law,10-2.3 Amperes LawComparing G,The Magnetic Field,Outside,a Long Straight Wire with Current,The Magnetic Field Outside a L,The Magnetic Field,Inside,a Long Straight Wire with Current,The Magnetic Field Inside a Lo,例,7 A hollow conducting cylinder,例 7 A hollow conducting cylind,10-2.4 Solenoids and Toroids,Magnetic Field of a Solenoid(,螺線管,),Magnetic Field of a Toroid(,螺線環,),10-2.4 Solenoids and ToroidsMa,Magnetic Field of a Solenoid,Magnetic Field of a Solenoid,Magnetic Field of a Toroid,Magnetic Field of a Toroid,磁圍阻核融合反應,器,Tokamak Fusion Test Reactor,磁圍阻核融合反應器Tokamak Fusion Test R,10-2.5 A Current Carrying Coil and a Magnetic Dipole,A current loop and a bar magnet,10-2.5 A Current Carrying Coil,Magnetic Field of a Coil,Magnetic Field of a Coil,敬請期待,電磁,IV,敬請期待電磁 IV,