HS-SCI-CP -- Chapter 19- Magnetism
... The magnetic properties of many materials are explained in terms of a model in which an electron is said to spin on its axis much like a top does. (This classical description should not be taken literally. The property of electron spin can be understood only with the methods of quantum mechanics.) T ...
... The magnetic properties of many materials are explained in terms of a model in which an electron is said to spin on its axis much like a top does. (This classical description should not be taken literally. The property of electron spin can be understood only with the methods of quantum mechanics.) T ...
18 electric charge and electric field
... For example, the Italian scientist Luigi Galvani (1737–1798) performed a series of experiments in which static electricity was used to stimulate contractions of leg muscles of dead frogs, an effect already known in humans subjected to static discharges. But Galvani also found that if he joined two m ...
... For example, the Italian scientist Luigi Galvani (1737–1798) performed a series of experiments in which static electricity was used to stimulate contractions of leg muscles of dead frogs, an effect already known in humans subjected to static discharges. But Galvani also found that if he joined two m ...
Current Electricity - PRADEEP KSHETRAPAL PHYSICS
... from left to right is equal to the number of electrons crossing from right to left (otherwise metal will not remain equipotential) so the net current through a cross-section is zero. A motion of charge is possible by motion of electron or a current carrier. Velocities of charged particle (electron) ...
... from left to right is equal to the number of electrons crossing from right to left (otherwise metal will not remain equipotential) so the net current through a cross-section is zero. A motion of charge is possible by motion of electron or a current carrier. Velocities of charged particle (electron) ...
dc machines
... field and armature windings in various ways. The field windings can be excited by a DC source which is connected only to the field windings and not connected to the armature. Such a configuration is known as a separately excited DC machine. The field excitation can also be provided by permanent magn ...
... field and armature windings in various ways. The field windings can be excited by a DC source which is connected only to the field windings and not connected to the armature. Such a configuration is known as a separately excited DC machine. The field excitation can also be provided by permanent magn ...
Electromechanics
... The aim of the course is to develop an understanding of electromagnetic principles and their application in a range of practical electromechanical devices. Instead of the traditional emphasis on mathematical methods, this course makes extensive use of field plots generated with MagNet to explain the ...
... The aim of the course is to develop an understanding of electromagnetic principles and their application in a range of practical electromechanical devices. Instead of the traditional emphasis on mathematical methods, this course makes extensive use of field plots generated with MagNet to explain the ...
Appendix 4 - Impact of electric and magnetic fields (size
... are avoiding or being attracted to sources of EMF and if EMF can cause disturbances in migration behaviour. This has previously been debated regarding the construction of transmission cables in the Baltic Sea. The importance of this issue in the context of marine renewables has been identified in se ...
... are avoiding or being attracted to sources of EMF and if EMF can cause disturbances in migration behaviour. This has previously been debated regarding the construction of transmission cables in the Baltic Sea. The importance of this issue in the context of marine renewables has been identified in se ...
History of electromagnetic theory
For a chronological guide to this subject, see Timeline of electromagnetic theory.The history of electromagnetic theory begins with ancient measures to deal with atmospheric electricity, in particular lightning. People then had little understanding of electricity, and were unable to scientifically explain the phenomena. In the 19th century there was a unification of the history of electric theory with the history of magnetic theory. It became clear that electricity should be treated jointly with magnetism, because wherever electricity is in motion, magnetism is also present. Magnetism was not fully explained until the idea of magnetic induction was developed. Electricity was not fully explained until the idea of electric charge was developed.