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Multimedia: Electricity and Magnetism. Ivan S Ruddock Department of Physics University of Strathclyde, Glasgow G4 0NG [email protected] Introduction.

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Multimedia: Electricity and Magnetism

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Multimedia electricity and magnetism l.jpg

Multimedia: Electricity and Magnetism

Ivan S Ruddock

Department of Physics

University of Strathclyde, Glasgow G4 0NG

[email protected]


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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


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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


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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 l.jpg

University of Strathclyde: First year E&M – magnetic force

EUPEN General Forum, Poiana Brasov, September 2008


University of strathclyde first year e m magnetic force6 l.jpg

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 l.jpg

(217) Magnetic force F = q(v x B)in 2Dhttp://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 htm8 l.jpg

(217) Magnetic force F = q(v x B)in 2Dhttp://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 htm9 l.jpg

(217) Magnetic force F = q(v x B)in 2Dhttp://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 htm10 l.jpg

(217) Magnetic force F = q(v x B)in 2Dhttp://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 htm11 l.jpg

(217) Magnetic force F = q(v x B)in 2Dhttp://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 htm12 l.jpg

(217) Magnetic force F = q(v x B)in 2Dhttp://lectureonline.cl.msu.edu/~mmp/kap21/cd533capp.htm

EUPEN General Forum, Poiana Brasov, September 2008


Slide13 l.jpg

(186) Lorentz force: F = q(E + v x B) in 3Dhttp://surendranath.tripod.com/Applets/Electricity/MovChgEleMag/MovChgEleMagApplet.html

Surendranath Reddy

EUPEN General Forum, Poiana Brasov, September 2008


Slide14 l.jpg

(186) Lorentz force: F = q(E + v x B) in 3Dhttp://surendranath.tripod.com/Applets/Electricity/MovChgEleMag/MovChgEleMagApplet.html

EUPEN General Forum, Poiana Brasov, September 2008


Slide15 l.jpg

(186) Lorentz force: F = q(E + v x B) in 3Dhttp://surendranath.tripod.com/Applets/Electricity/MovChgEleMag/MovChgEleMagApplet.html

EUPEN General Forum, Poiana Brasov, September 2008


Slide16 l.jpg

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 (1863D 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 (2172D Lorentz force or 138 solenoid)

EUPEN General Forum, Poiana Brasov, September 2008


University of strathclyde first year e m magnetic field inside solenoid l.jpg

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 solenoid18 l.jpg

University of Strathclyde: First year E&M – magnetic field inside solenoid

EUPEN General Forum, Poiana Brasov, September 2008


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(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/Magnetism001.htm

EUPEN General Forum, Poiana Brasov, September 2008


Slide20 l.jpg

(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/Magnetism001.htm

EUPEN General Forum, Poiana Brasov, September 2008


Slide21 l.jpg

(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/Magnetism001.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


Slide22 l.jpg

(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/Magnetism001.htm

EUPEN General Forum, Poiana Brasov, September 2008


Slide23 l.jpg

(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/Magnetism001.htm

EUPEN General Forum, Poiana Brasov, September 2008


Slide24 l.jpg

(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/Magnetism001.htm

EUPEN General Forum, Poiana Brasov, September 2008


Slide25 l.jpg

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 (1863D 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 (2172D 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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