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The lines of magnetic field from a bar magnet form closed lines. By convention, the field direction is taken to be outward from the North pole and in to the South pole of the magnet. Permanent magnets can be made from ferromagnetic materials.
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hyperphysics.phy-astr.gsu.edu/hbase/magnetic/elemag.htm...
hyperphysics.phy-astr.gsu.edu/hbase/magnetic/elemag.html
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Magnetic Field In and Around a Bar Magnet ... As discussed previously, a magnetic field is a change in energy within a volume of space. The magnetic field surrounding a bar magnet can be seen in the magnetograph below. A magnetograph can be created by placing a piece of paper over a magnet and sprinkling the paper with...
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www.ndt-ed.org/EducationResources/CommunityCollege/MagP...
www.ndt-ed.org/EducationResources/CommunityCollege/MagParticle/Physics/MagneticFieldChar.htm
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The following physlet lets you use a small virtual compass (the circle/arrow) to explore the magnetic field around one or two bar magnets (just as you do in class with a real compass and magnet). You can drag the compass around with the mouse to see the field at different points.
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www.smaphysics.ca/phys30s/field30s/barmagnets.html
www.smaphysics.ca/phys30s/field30s/barmagnets.html
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Java applet: Magnetic field of a bar magnet ... The magnetic field of a bar magnet can be investigated with a compass needle. The magnetic poles of both bar magnet and compass needle are symbolized by the following colours:
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www.walter-fendt.de/ph14e/mfbar.htm
www.walter-fendt.de/ph14e/mfbar.htm
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L14. Magnetic Field around a Bar Magnet ... Goal: To investigate natural magnetism and the magnetic field of the Earth by plotting the magnetic field lines around a bar magnet. ... In an unused corner of your poster paper, make a drawing of what you would expect the magnetic field of a bar magnet to look like;
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courses.ncssm.edu/apb78/labs/L14/L14_magfields_v2.htm
courses.ncssm.edu/apb78/labs/L14/L14_magfields_v2.htm
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Much like a DC generator, an AC generator requires a coil to cut across the force lines of a magnetic field. This coil is attached to two slip ... During the first half turn, the coil cuts across the field near the magnet's north pole. Electrons travel up the wire, and the lower slip ring becomes positively charged.
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micro.magnet.fsu.edu/electromag/java/generator/ac.html
micro.magnet.fsu.edu/electromag/java/generator/ac.html
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This interactive Java tutorial explores the patterns of magnetic field lines. ... The iron filings line up along the magnetic field lines of the magnet. Note the circular pattern of the field lines. By convention, we say that the field lines emanate from the north pole of the magnet and re-enter the magnet through the...
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micro.magnet.fsu.edu/electromag/java/magneticlines/inde...
micro.magnet.fsu.edu/electromag/java/magneticlines/index.html
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Magnetic field lines do not begin or end, but always close like a circle. ... Magnetic field lines circle around currents. ... For example, below are shown the magnetic field lines of a small current loop (a magnetic dipole).
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www.pa.msu.edu/courses/1997spring/PHY232/lectures/amper...
www.pa.msu.edu/courses/1997spring/PHY232/lectures/ampereslaw/lines.html
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A bar magnet is a magnetic dipole, and its field varies in the space around the magnet in the same way as the electric field varies around an electric dipole. So we can use the results of the E calculations to find the magnetic field B and forces between magnets.
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instruct.tri-c.edu/fgram/web/Mdipole.htm
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