@article{VollmerMoellmann2008, author = {Vollmer, Michael and M{\"o}llmann, Klaus-Peter}, title = {Infrarotkameras: es gibt mehr zu sehen als unsere Augen wahrnehmen}, series = {In: Naturwissensschaftliche Rundschau 61 (2008) 11, 557—565}, journal = {In: Naturwissensschaftliche Rundschau 61 (2008) 11, 557—565}, pages = {557 -- 565}, year = {2008}, language = {de} } @article{VollmerMoellmannArnold2008, author = {Vollmer, Michael and M{\"o}llmann, Klaus-Peter and Arnold, Frank}, title = {Ins eigene Segel blasen. M{\"u}nchhausen-Effekt und Schubumkehr}, series = {In: Physik in unserer Zeit 39 (2008) 5, 241-245}, journal = {In: Physik in unserer Zeit 39 (2008) 5, 241-245}, doi = {10.1002/piuz.200801172}, pages = {241 -- 245}, year = {2008}, abstract = {Kann man sich mit seinem Segelboot fortbewegen, indem man ins eigene Segel bl{\"a}st? Der Impulssatz erlaubt diesen an M{\"u}nchhausen erinnernden Effekt. Das demonstriert ein vereinfachtes Gedankenexperiment, bei dem der Segler durch den Werfer eines Balls und das Segel durch eine starre Wand ersetzt wird. Allerdings ergibt die naive Theorie, die Luftmolek{\"u}le als ball{\"a}hnliche Korpuskeln auffasst, einen zu hohen Impuls des reflektierten Luftstroms. Eine realistische Beschreibung liefert die moderne Str{\"o}mungstheorie. Ihre Resultate sind experimentell erfolgreich umsetzbar. Technisch angewendet wird das Prinzip in der Schubumkehr von Flugzeugtriebwerken.}, language = {de} } @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{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{KarstaedtPinnoMoellmannetal.1999, author = {Karst{\"a}dt, Detlef and Pinno, Frank and M{\"o}llmann, Klaus-Peter and Vollmer, Michael}, title = {Anschauliche W{\"a}rmelehre im Unterricht : ein Beitrag zur Visualisierung thermischer Vorg{\"a}nge}, series = {In:: Praxis der Naturwissenschaften / Physik 48 (1999) 5, 24-31}, journal = {In:: Praxis der Naturwissenschaften / Physik 48 (1999) 5, 24-31}, pages = {24 -- 31}, year = {1999}, language = {de} } @article{VollmerMoellmann1999, author = {Vollmer, Michael and M{\"o}llmann, Klaus-Peter}, title = {Beispiele physikalischer Freihand- und Low-Cost-Experimente in der Schule}, series = {In: Physik in der Schule 37 (1999) 5, 332-336}, journal = {In: Physik in der Schule 37 (1999) 5, 332-336}, pages = {332 -- 336}, year = {1999}, language = {de} } @article{VollmerMoellmann2008, author = {Vollmer, Michael and M{\"o}llmann, Klaus-Peter}, title = {Michelson Interferometer for your kitchen table}, series = {In: The Physics Teacher 46 (2008), 114-117}, journal = {In: The Physics Teacher 46 (2008), 114-117}, issn = {0031-921x}, pages = {114 -- 117}, year = {2008}, language = {en} } @article{VollmerMoellmannArnold2007, author = {Vollmer, Michael and M{\"o}llmann, Klaus-Peter and Arnold, F.}, title = {Locomotion by blowing into the sail of a sailboat? From a basic physics question to thrust reversal of jet airplanes}, series = {In: Physics Education 42 (2007), 369-377}, journal = {In: Physics Education 42 (2007), 369-377}, issn = {0031-9120}, pages = {369 -- 377}, year = {2007}, language = {en} } @article{VollmerMoellmann2007, author = {Vollmer, Michael and M{\"o}llmann, Klaus-Peter}, title = {Infrared thermal imaging as a tool in university physics education}, series = {In: European Journal of Physics 28 (2007), S37-S50}, journal = {In: European Journal of Physics 28 (2007), S37-S50}, pages = {37 -- 50}, year = {2007}, language = {en} } @article{MoellmannVollmer2006, author = {M{\"o}llmann, Klaus-Peter and Vollmer, Michael}, title = {Measurements and predictions of the illuminance during a solar eclipse}, series = {In: European journal of physics 27 (2006), 1299-1314}, journal = {In: European journal of physics 27 (2006), 1299-1314}, pages = {1299 -- 1314}, year = {2006}, abstract = {Measurements of illuminance during a solar eclipse are presented. The data are compared to theoretical predictions, based on a geometrical model for obscuration. The model assumes a straight and uniform motion of the sun and moon as well as a spherical shape of both, i.e. it neglects any effects of limb darkening. Furthermore, the sun's disk is assumed to have homogeneous luminosity, i.e. any luminosity variations due to sun spots are neglected. Input parameters are the duration of the eclipse, the duration of totality, the impact parameter, i.e. the distance between the two trajectories of sun and moon, and the sizes of sun and moon. The model applies to all types of eclipses, partial, annular and total.}, language = {en} } @inproceedings{MoellmannLutzVollmeretal.2004, author = {M{\"o}llmann, Klaus-Peter and Lutz, Norbert and Vollmer, Michael and Wille, Ch.}, title = {Thermography of Microsystems}, series = {In: InfraMation proceedings Vol. 5 (2004), 183-196}, booktitle = {In: InfraMation proceedings Vol. 5 (2004), 183-196}, pages = {183 -- 196}, year = {2004}, language = {en} } @inproceedings{MoellmannPinnoVollmer2009, author = {M{\"o}llmann, Klaus-Peter and Pinno, Frank and Vollmer, Michael}, title = {Microscopic and high-speed thermal imaging: a powerful tool in physics R\&D}, series = {In: InfraMation proceedings Vol.10 (2009), 303-317}, booktitle = {In: InfraMation proceedings Vol.10 (2009), 303-317}, pages = {303 -- 317}, year = {2009}, language = {en} } @inproceedings{VollmerMoellmannPinno2008, author = {Vollmer, Michael and M{\"o}llmann, Klaus-Peter and Pinno, Frank}, title = {Cheese cubes, light bulbs, soft drinks: An unusual approach to study convection, radiation and size dependent heating and cooling}, series = {In: InfraMation proceedings Vol. 9 (2008), p. 477-492}, booktitle = {In: InfraMation proceedings Vol. 9 (2008), p. 477-492}, pages = {477 -- 492}, year = {2008}, language = {en} } @inproceedings{MoellmannPinnoVollmer2008, author = {M{\"o}llmann, Klaus-Peter and Pinno, Frank and Vollmer, Michael}, title = {Night sky radiant cooling - influence on outdoor thermal imaging analysis}, series = {In: InfraMation proceedings Vol. 9 (2008), 279-295}, booktitle = {In: InfraMation proceedings Vol. 9 (2008), 279-295}, pages = {279 -- 295}, year = {2008}, language = {en} } @inproceedings{PinnoMoellmannVollmer2008, author = {Pinno, Frank and M{\"o}llmann, Klaus-Peter and Vollmer, Michael}, title = {Thermography of window panes - problems, possibilities and troubleshooting}, series = {In: InfraMation proceedings Vol. 9 (2008), 355-362}, booktitle = {In: InfraMation proceedings Vol. 9 (2008), 355-362}, pages = {355 -- 362}, year = {2008}, language = {en} } @inproceedings{MoellmannPinnoVollmer2007, author = {M{\"o}llmann, Klaus-Peter and Pinno, Frank and Vollmer, Michael}, title = {Influence of wind effects on thermal imaging results - Is the wind chill effect relevant ?}, series = {In: InfraMation proceedings Vol. 8 (2007), 21-31}, booktitle = {In: InfraMation proceedings Vol. 8 (2007), 21-31}, pages = {21 -- 31}, year = {2007}, language = {en} } @article{VollmerMoellmann2011, author = {Vollmer, Michael and M{\"o}llmann, Klaus-Peter}, title = {Rainbows, water droplets, and seeing—slow motion analysis of experiments in atmospheric optics}, series = {In: Applied optics Vol. 50 (2011) 28, pp. F21-F28}, journal = {In: Applied optics Vol. 50 (2011) 28, pp. F21-F28}, doi = {http://dx.doi.org/10.1364/AO.50.000F21}, pages = {F21 -- F28}, year = {2011}, abstract = {Many physics processes underlying phenomena in atmospheric optics happen on a rather short time scale such that neither the human eye nor video cameras are able to analyze the details. We report applications of high-speed imaging of laboratory experiments in atmospheric optics with subsequent slow motion analysis. The potential to study respective transient effects is investigated in general and for a few phenomena in detail, in particular for rainbow scattering due to single oscillating droplets during free fall, and for light propagation effects through atmospheric paths with turbulences, leading, e.g., to scintillation of stars or shimmering of mirage images. © 2011 Optical Society of America}, language = {en} } @inproceedings{VollmerPinnoMoellmann2010, author = {Vollmer, Michael and Pinno, Frank and M{\"o}llmann, Klaus-Peter}, title = {Measurements of sun and moon with IR cameras: effects of air mass}, series = {In: InfraMation proceedings. - Vol. 11 ( 2010) , 57-74}, booktitle = {In: InfraMation proceedings. - Vol. 11 ( 2010) , 57-74}, pages = {74}, year = {2010}, language = {en} }