Chapter 25 Magnetism 第十一章稳恒磁场 Chapter 25 Magnetism 1. Magnet and Magnetic Field 2. Definition of Magnetic Field 3. Force on an Electric Charge Moving in a Magnetic Field 4. Torque on a Current Loop
Chapter 25 Magnetism 第十一章 稳恒磁场 Chapter 25 Magnetism 1. Magnet and Magnetic Field 2. Definition of Magnetic Field 3. Force on an Electric Charge Moving in a Magnetic Field 4. Torque on a Current Loop
Chapter 25 Magnetism 第十一章稳恒磁场 New words and Expressions magnetic monopole 磁单极 magnet 磁铁 magnetic phenomena 磁现象 north(south) pole 南(北极 cyclotron frequency 回旋加速器 aurora borealis 极光 mass Spectrometer 质谱仪 Hall effect 霍尔效应 Hall EMF 霍耳电压 magnetic dipole moment 磁矩
Chapter 25 Magnetism 第十一章 稳恒磁场 New words and Expressions magnetic monopole 磁单极 magnet 磁铁 magnetic phenomena 磁现象 north (south) pole 南(北)极 cyclotron frequency 回旋加速器 aurora borealis 极光 mass Spectrometer 质谱仪 Hall effect 霍尔效应 Hall EMF 霍耳电压 magnetic dipole moment 磁矩
Chapter 25 Magnetism 第十一章稳恒磁场 25-1. Magnets and Magnetic Fields (P580-582 I Magnetic phenomena Magnets used in: Compass; refrigerator-door; microphone, computer disk North geographic pole Magnetic Compass pole Magnetic po ole South geographic pole
Chapter 25 Magnetism 第十一章 稳恒磁场 25-1.Magnets and Magnetic Fields (P580-582) Magnets used in: Compass; refrigerator-door; microphone; computer disk; … 1 Magnetic phenomena I
Chapter 25 Magnetism 第十一章稳恒磁场 2 Basic concepts Poles: the magnetic effect is strongest North (South) pole: The pole of a freel suspended magnet that points to geographic north(south). 北极 南极 There are force between poles Unlike poles attract, and unlike poles repel
Chapter 25 Magnetism 第十一章 稳恒磁场 Poles: the magnetic effect is strongest. North (South) pole: The pole of a freely suspended magnet that points to geographic north (south). There are force between poles. Unlike poles attract, and unlike poles repel. 北极 南极 2 Basic Concepts
Chapter 25 Magnetism 第十一章稳恒磁场 N Repulsive N S N Repulsive S N Attractive If you break a magnet in half, you dont obtain isolated north and south poles; instead, two new magnets are produced. No magnetic monopole has been observed
Chapter 25 Magnetism 第十一章 稳恒磁场 If you break a magnet in half, you don’t obtain isolated north and south poles; instead, two new magnets are produced. No magnetic monopole has been observed