1. Multimedia: Electricity and Magnetism Ivan S Ruddock Department of Physics University of Strathclyde, Glasgow G4 0NG i.s.ruddock@strath.ac.uk

2. 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

3. 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)

4. EUPEN General Forum, Poiana Brasov, September 2008  The best multi-media may come from the least expected sources Observations

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

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

7. 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 http://lectureonline.cl.msu.edu/~mmp/kap21/cd533capp.htm

8. 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 http://lectureonline.cl.msu.edu/~mmp/kap21/cd533capp.htm

9. 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 http://lectureonline.cl.msu.edu/~mmp/kap21/cd533capp.htm

10. 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 http://lectureonline.cl.msu.edu/~mmp/kap21/cd533capp.htm

11. 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 http://lectureonline.cl.msu.edu/~mmp/kap21/cd533capp.htm

12. 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 http://lectureonline.cl.msu.edu/~mmp/kap21/cd533capp.htm

13. 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 http://surendranath.tripod.com/Applets/Electricity/MovChgEleMag/MovChg EleMagApplet.html Surendranath Reddy

14. 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 http://surendranath.tripod.com/Applets/Electricity/MovChgEleMag/MovChg EleMagApplet.html

15. 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 http://surendranath.tripod.com/Applets/Electricity/MovChgEleMag/MovChg EleMagApplet.html

16. EUPEN General Forum, Poiana Brasov, September 2008  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 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

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

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

19. 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 http://www.nhn.ou.edu/~walkup/demonstrations/WebAssignments/Magneti sm001.htm

20. 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 http://www.nhn.ou.edu/~walkup/demonstrations/WebAssignments/Magneti sm001.htm

21. EUPEN General Forum, Poiana Brasov, September 2008 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 (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 http://www.nhn.ou.edu/~walkup/demonstrations/WebAssignments/Magneti sm001.htm

22. 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 http://www.nhn.ou.edu/~walkup/demonstrations/WebAssignments/Magneti sm001.htm

23. 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 http://www.nhn.ou.edu/~walkup/demonstrations/WebAssignments/Magneti sm001.htm

24. 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 http://www.nhn.ou.edu/~walkup/demonstrations/WebAssignments/Magneti sm001.htm

25. EUPEN General Forum, Poiana Brasov, September 2008  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 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