@article{CowleyLavenVollmer2005, author = {Cowley, L. and Laven, Ph. and Vollmer, Michael}, title = {Rings around sun and moon : coronae and diffraction}, series = {In: Physics Education 40 (2005) 1, 51-59}, journal = {In: Physics Education 40 (2005) 1, 51-59}, pages = {51 -- 59}, year = {2005}, language = {en} } @article{VollmerMoellmannKarstaedt2004, author = {Vollmer, Michael and M{\"o}llmann, Klaus-Peter and Karst{\"a}dt, Detlef}, title = {Microwave oven experiments with metals and light sources}, series = {In: Physics Education 39 (2004), 500-508}, journal = {In: Physics Education 39 (2004), 500-508}, pages = {500 -- 508}, year = {2004}, abstract = {Don't put metal objects in the microwave' is common safety advice. But why? Here we describe demonstration experiments involving placing household metallic objects in a microwave oven. These allow a better understanding of the interaction of microwaves with materials. Light bulbs and discharge lamps can also be used in instructive demonstrations.}, language = {en} } @article{VollmerMoellmannKarstaedt2004, author = {Vollmer, Michael and M{\"o}llmann, Klaus-Peter and Karst{\"a}dt, Detlef}, title = {More experiments with microwave ovens}, series = {In: Physics education 39 (2004) 4, 346 - 351}, journal = {In: Physics education 39 (2004) 4, 346 - 351}, pages = {346 -- 351}, year = {2004}, abstract = {Microwave ovens can be used to perform exciting demonstrations that illustrate a variety of physics topics. Experiments discussed here show superheating, visualize the inhomogeneous heating that takes place in a microwave and also show how to use a mobile phone to detect radiation leaking from the oven. Finally eggs can give some spectacular (though messy) explosions. In all cases please note the safety advice given.}, language = {en} } @article{ParkerVollmer2004, author = {Parker, Kerry and Vollmer, Michael}, title = {Bad food and good physics : the development of domestic microwave cookery}, series = {In: Physics Education 39 (2004) 1, 82-90}, journal = {In: Physics Education 39 (2004) 1, 82-90}, pages = {82 -- 90}, year = {2004}, abstract = {This article forms the second of two papers on the subject of microwave cookers. In the first paper Michael Vollmer describes the physics behind the production of microwaves in the magnetron of the oven, the waveguide and the interaction between the microwaves and the food. This article looks at the physics of cooking, and how the appliance and the food industries have developed products which are now part of many of our students' lifestyles. We include many interesting demonstrations that illustrate this history and which could be used to teach many principles of physics.}, language = {en} } @article{Vollmer2004, author = {Vollmer, Michael}, title = {Physics of the microwave oven}, series = {In: Physics education 39 (2004) 1, 74-81}, journal = {In: Physics education 39 (2004) 1, 74-81}, pages = {74 -- 81}, year = {2004}, abstract = {This is the first of two articles about the physics of microwave ovens. This article deals with the generation of microwaves in the oven and includes the operation of the magnetrons, waveguides and standing waves in resonant cavities. It then considers the absorption of microwaves by foods, discussing the dielectric relaxation of water, penetration depths of electromagnetic waves in matter and, in considering the possible chemical changes during the microwave heating, multi-photon ionization or dissociation.}, language = {en} } @article{Vollmer2003, author = {Vollmer, Michael}, title = {Physics teacher training and research in physics education: results of an inquiry by the European Physical Society}, series = {In: European journal of physics 24 (2003), 131-147}, journal = {In: European journal of physics 24 (2003), 131-147}, pages = {131 -- 147}, year = {2003}, abstract = {An inquiry among national experts on physics education research and teaching has been carried out using a questionnaire that deals with the organization of physics teacher training and the main tasks and research activities of professionals in physics education. The goal was to collect data on a European scale on physics teacher training at universities by professionals as well as on research activities by professionals in the field of physics education. Results are presented based on answers from 22 European countries.}, language = {en} } @article{Vollmer2003, author = {Vollmer, Michael}, title = {Estimating the thickness of the atmosphere by rayleigh scattering}, series = {In: American journal of physics 71 (2003) 10, 979-983}, journal = {In: American journal of physics 71 (2003) 10, 979-983}, pages = {979 -- 983}, year = {2003}, language = {en} } @article{MoellmannVollmer2000, author = {M{\"o}llmann, Klaus-Peter and Vollmer, Michael}, title = {Eine etwas andere, physikalische Sehweise - Visualisierung von Energieumwandlungen und Strahlungsphysik f{\"u}r die (Hochschul-)lehre}, series = {In: Physikalische Bl{\"a}tter 56 (2000) 9, 65-69}, journal = {In: Physikalische Bl{\"a}tter 56 (2000) 9, 65-69}, doi = {10.1002/phbl.20000560915}, pages = {65 -- 69}, year = {2000}, abstract = {Max Planck legte 1900 mit dem nach ihm benannten Strahlungsgesetz das quantitative Fundament zu so genannten W{\"a}rmebildsystemen. 100 Jahre sp{\"a}ter gibt es — mit bedingt durch Fortschritte in der Halbleitertechnologie und Mikrosystemtechnik — Infrarotkameras, mit denen sowohl die von Planck untersuchten Strahlungsgesetze zur Hohlraumstrahlung als auch allgemein wissenschaftliche und technische Anwendungen der Temperaturstrahlung von K{\"o}rpern untersucht werden k{\"o}nnen. Dar{\"u}ber hinaus bieten sich solche Systeme auch f{\"u}r didaktische Zwecke an, da physikalische Gesetzm{\"a}ßigkeiten mit Energieaustauschprozesssen aus sehr vielen Gebieten der Physik durch eine etwas andere, physikalische Sehweise visualisiert und damit f{\"u}r Lehrzwecke eingesetzt werden k{\"o}nnen.}, language = {de} } @article{MoellmannVollmer2000, author = {M{\"o}llmann, Klaus-Peter and Vollmer, Michael}, title = {Zauberei, Diffusion, industrielle Messtechnik und 100 Jahre Quantentheorie : Einige Freihandexperimente zur Optik und W{\"a}rmestrahlung}, series = {In: Physik in der Schule 38 (2000) 4, 260-262}, journal = {In: Physik in der Schule 38 (2000) 4, 260-262}, pages = {260 -- 262}, year = {2000}, language = {de} } @article{Vollmer2000, author = {Vollmer, Michael}, title = {Unschuldige Schule! : In den vergangenen Jahren hat zwar die Zahl der Physikstudenten dramatisch abgenommen, nicht aber die Zahl der Sch{\"u}ler, die in der Oberstufe Physik w{\"a}hlen}, series = {In: Physikalische Bl{\"a}tter 56 (2000) 6, 21-22}, journal = {In: Physikalische Bl{\"a}tter 56 (2000) 6, 21-22}, doi = {10.1002/phbl.20000560606}, pages = {21 -- 22}, year = {2000}, language = {de} }