Transcript Multimedia: Electricity and Magnetism

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