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Multimedia Electricity and Magnetism

VIEWS: 7 PAGES: 25

									Multimedia: Electricity and Magnetism

             Ivan S Ruddock

         Department of Physics
    University of Strathclyde, Glasgow
                  G4 0NG

        i.s.ruddock@strath.ac.uk
Introduction
Multimedia selected from Proc. 11th European Workshop on Multimedia in
Physics Teaching and Learning (MPTL XI) Szeged, Hungary, September
2006

Criteria for selecting these multimedia examples from the list:
 Topic that cannot be illustrated by conventional means – obviously 3D such
  as magnetic effects.
 Ignored those that are intrinsically 2D phenomena – electrostatics, circuits
  and circuit components etc.
 Ignored commercial adjuncts for textbooks.
 Charge moving in a magnetic field and/or electric field (186/217/126)
 Magnetic field inside a solenoid (138)




 EUPEN General Forum, Poiana Brasov, September 2008
Inspiration

Pioneer of using models for teaching
undergraduate physics:

“If I cannot make a model of it, I cannot
understand it”

Lord Kelvin, 1824 – 1907

Professor of Natural Philosophy,
Glasgow, 1846 –99

Sir William Thomson, 1866

Baron Kelvin of Largs, 1892

                                                  William Thomson, 1846 (aged 22)
 EUPEN General Forum, Poiana Brasov, September 2008
Observations

 The best multi-media may come from the least expected sources




EUPEN General Forum, Poiana Brasov, September 2008
University of Strathclyde:
First year E&M – magnetic force




 EUPEN General Forum, Poiana Brasov, September 2008
University of Strathclyde:
First year E&M – magnetic force




 EUPEN General Forum, Poiana Brasov, September 2008
(217) Magnetic force F = q(v x B) in 2D
http://lectureonline.cl.msu.edu/~mmp/kap21/cd533capp.htm




EUPEN General Forum, Poiana Brasov, September 2008
(217) Magnetic force F = q(v x B) in 2D
http://lectureonline.cl.msu.edu/~mmp/kap21/cd533capp.htm




EUPEN General Forum, Poiana Brasov, September 2008
(217) Magnetic force F = q(v x B) in 2D
http://lectureonline.cl.msu.edu/~mmp/kap21/cd533capp.htm




EUPEN General Forum, Poiana Brasov, September 2008
(217) Magnetic force F = q(v x B) in 2D
http://lectureonline.cl.msu.edu/~mmp/kap21/cd533capp.htm




EUPEN General Forum, Poiana Brasov, September 2008
(217) Magnetic force F = q(v x B) in 2D
http://lectureonline.cl.msu.edu/~mmp/kap21/cd533capp.htm




EUPEN General Forum, Poiana Brasov, September 2008
(217) Magnetic force F = q(v x B) in 2D
http://lectureonline.cl.msu.edu/~mmp/kap21/cd533capp.htm




EUPEN General Forum, Poiana Brasov, September 2008
(186) Lorentz force: F = q(E + v x B) in 3D
http://surendranath.tripod.com/Applets/Electricity/MovChgEleMag/MovChg
EleMagApplet.html




                                                      Surendranath Reddy




EUPEN General Forum, Poiana Brasov, September 2008
(186) Lorentz force: F = q(E + v x B) in 3D
http://surendranath.tripod.com/Applets/Electricity/MovChgEleMag/MovChg
EleMagApplet.html




 EUPEN General Forum, Poiana Brasov, September 2008
(186) Lorentz force: F = q(E + v x B) in 3D
http://surendranath.tripod.com/Applets/Electricity/MovChgEleMag/MovChg
EleMagApplet.html




 EUPEN General Forum, Poiana Brasov, September 2008
Observations
 The best multi-media may come from the least expected sources
 Dedicated departmental server required in some cases as multimedia
  may be part of a large suite of applications
 Many titles available on-line – BUT – few appear to be available for
  immediate download
       internet access required in the lecture theatre
 Applets cannot easily be imbedded into PowerPoint, use „LiveWeb‟
       http://skp.mvps.org/liveweb.htm
 Need to distinguish between
       sophisticated applets of interest to the lecturer (186 3D Lorentz force)
        for use as a teaching aid during lectures,
       and simple illustrations that add little to a diagram but are suitable for
        private study by students (217 2D Lorentz force or 138 solenoid)


EUPEN General Forum, Poiana Brasov, September 2008
University of Strathclyde:
First year E&M – magnetic field inside solenoid




 EUPEN General Forum, Poiana Brasov, September 2008
University of Strathclyde:
First year E&M – magnetic field inside solenoid




 EUPEN General Forum, Poiana Brasov, September 2008
(138) Magnetic field in a solenoid: example that adds
      little to a basic diagram or a good aid for private study?
http://www.nhn.ou.edu/~walkup/demonstrations/WebAssignments/Magneti
sm001.htm




 EUPEN General Forum, Poiana Brasov, September 2008
(138) Magnetic field in a solenoid: example that adds
      little to a basic diagram or a good aid for private study?
http://www.nhn.ou.edu/~walkup/demonstrations/WebAssignments/Magneti
sm001.htm




 EUPEN General Forum, Poiana Brasov, September 2008
  (138) Magnetic field in a solenoid: example that adds
        little to a basic diagram or a good aid for private study?
 http://www.nhn.ou.edu/~walkup/demonstrations/WebAssignments/Magneti
 sm001.htm

Applet accompanied by exercises seeking observations
but there is no explanation of why the field changes as
the number of turns increases or their spacing changes




   EUPEN General Forum, Poiana Brasov, September 2008
(138) Magnetic field in a solenoid: example that adds
      little to a basic diagram or a good aid for private study?
http://www.nhn.ou.edu/~walkup/demonstrations/WebAssignments/Magneti
sm001.htm




 EUPEN General Forum, Poiana Brasov, September 2008
(138) Magnetic field in a solenoid: example that adds
      little to a basic diagram or a good aid for private study?
http://www.nhn.ou.edu/~walkup/demonstrations/WebAssignments/Magneti
sm001.htm




 EUPEN General Forum, Poiana Brasov, September 2008
(138) Magnetic field in a solenoid: example that adds
      little to a basic diagram or a good aid for private study?
http://www.nhn.ou.edu/~walkup/demonstrations/WebAssignments/Magneti
sm001.htm




 EUPEN General Forum, Poiana Brasov, September 2008
Observations
 The best multi-media may come from the least expected sources
 Dedicated departmental server required in some cases as multimedia
  may be part of a large suite of applications
 Many titles available on-line – BUT – few appear to be available for
  immediate download
       internet access required in the lecture theatre
 Applets cannot easily be imbedded into PowerPoint, use „LiveWeb‟
       http://skp.mvps.org/liveweb.htm
 Need to distinguish between
       sophisticated applets of interest to the lecturer (186 3D Lorentz force)
        for use as a teaching aid during lectures,
       and simple illustrations that add little to a diagram but are suitable for
        private study by students (217 2D Lorentz force or 138 solenoid)
 Also need to check that the physics is correct!
EUPEN General Forum, Poiana Brasov, September 2008

								
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