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

Multimedia: Electricity and Magnetism

Ivan S Ruddock

Department of PhysicsUniversity of Strathclyde, Glasgow

G4 0NG

[email protected]

mailto:[email protected]

EUPEN General Forum, Poiana Brasov, September 2008

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)

Multimedia selected from Proc. 11th European Workshop on Multimedia in Physics Teaching and Learning (MPTL XI) Szeged, Hungary, September 2006

Introduction


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)


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

Observations


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


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


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












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

Surendranath Reddy







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)

Observations


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


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


(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














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!

Observations

Documents

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