TY - JOUR A1 - Vollmer, Michael A1 - Möllmann, Klaus-Peter T1 - Physikalische Zauberei : die Kette im Ring JF - In: Physik in unserer Zeit 45 (2014) 1, 44-45 N2 - Ein einfacher physikalischer Zaubertrick besteht darin, eine Kette über den Handrücken zu legen und danach von unten einen Ring über die Kette zu schieben. Der Ring kann entweder von der zweiten Hand oder der die Kette haltenden Hand gehalten werden. Er wird sodann losgelassen und soll (mit einem Knoten) in der Kette hängen bleiben. Y1 - 2014 U6 - https://doi.org/10.1002/piuz.201490004 SP - 44 EP - 45 ER - TY - JOUR A1 - Rotermund, H. H. A1 - Haas, G. A1 - Franz, Robert U. A1 - Tromp, R. M. A1 - Ertl, G. T1 - Imaging Pattern Formation in Surface Reactions from Ultrahigh Vacuum up to Atmospheric Pressures JF - In: Science 270 (1995) 5236, pp. 608-610 N2 - Two optical methods that allow pattern formation to be investigated at an arbitrary pressure are here applied to image concentration patterns of adsorbed species associated with heterogeneous catalytic reactions. In contrast to most surface physical techniques, these methods are not restricted to high vacuum conditions and thus bridge the “pressure gap.” With carbon monoxide oxidation on a (110) surface of platinum as an example, the coupling mechanisms responsible for spatiotemporal self-organization in surface reactions were followed from reaction-diffusion control to the thermokinetic region, associated with phenomena not previously observed in pattern formation. Y1 - 1995 U6 - https://doi.org/10.1126/science.270.5236.608 SP - 608 EP - 610 ER - TY - JOUR A1 - Rotermund, H. H. A1 - Haas, G. A1 - Franz, Robert U. A1 - Tromp, R. M. A1 - Ertl, G. T1 - Imaging pattern formation: bridging the pressure gap JF - In: Applied Physics A 61 (1995) 6, pp 569-574 N2 - Two surface-sensitive optical imaging methods, Ellipso-Microscopy for surface Imaging (EMSI) and Reflection Anisotropy Microscopy (RAM) are introduced. They allow imaging of pattern formation on surfaces, e.g., due to submonolayer coverages of adsorbates, at any arbitrary pressure. In spatio-temporal pattern formation during heterogeneously catalysed reactions this bridges the ‘pressure gap’ between well-defined UHV experiments and ‘real catalysis’. For the CO oxidation on Pt(110), the parameter space for pattern formation was extended up to 100 mbar, i.e., by 5 orders of magnitude compared to earlier investigations by Photo-Emission Electron Microscopy (PEEM) which had to be conducted below 10−3 mbar. With increasing pressure, the synchronisation mechanisms responsible for the observed pattern showed a gradual shift from reaction-diffusion to thermal-kinetic coupling unveiling previously unseen features of pattern formation in catalysis. Y1 - 1995 U6 - https://doi.org/10.1007/BF01542865 SP - 569 EP - 574 ER - TY - JOUR A1 - Ahlert, D. A1 - Franz, Robert U. A1 - Hohlwein, D. A1 - Prandl, W. A1 - Schiebel, P. A1 - Siemensmeyer, K. T1 - Die partielle Konversion von inkohärenter in kohärente Streuung an Protonen : das Ausfrieren der Quanten-Spin-Fluktuationen beim freien NH3-Rotator in Ni(NH3)6(PF6)2 JF - In: Zeitschrift für Kristallographie / Supplement issue No. 9 (1995) , p. 82 Y1 - 1995 SP - 82 ER - TY - JOUR A1 - Haas, G. A1 - Franz, Robert U. A1 - Rotermund, H. H. A1 - Tromp, R. M. A1 - Ertl, G. T1 - Imaging surface reactions with light JF - In: Surface Science Vol. 352–354 (1996), pp 1003–1006 N2 - Two new optical imaging methods with submonolayer surface sensitivity are applied together to investigate pattern formation of adsorbate concentrations on surfaces during heterogeneously catalysed reactions. Ellipso-microscopy for surface imaging (EMSI) is based on an ellipsometric effect, reflection anisotropy microscopy (RAM) on the polarising properties of surface anisotropies. For the CO oxidation reaction on a Pt(110) surface features like front propagation, target patterns and spiral waves are observed, similar as in prior investigations by photoemission electron microscopy (PEEM). By applying EMSI and RAM simultaneously and imaging the same spot of the surface, supplementary information is gained on the properties of the reaction diffusion fronts. When observing a reaction front by EMSI and RAM at temperatures between 330 and 420 K the image of the front in RAM trails behind its image in EMSI. EMSI seems to display changes in the coverage of adsorbates while RAM relates to variations in surface structure. Y1 - 1996 U6 - https://doi.org/10.1016/0039-6028(95)01316-4 SP - 1003 EP - 1006 ER - TY - CHAP A1 - Pinno, Frank A1 - Möllmann, Klaus-Peter A1 - Vollmer, Michael T1 - Moisture detection at building walls using evaporative cooling T2 - In: InfraMation proceedings. - Vol. 14 (2013) Y1 - 2013 ER - TY - CHAP A1 - Möllmann, Klaus-Peter A1 - Vollmer, Michael T1 - Einfache Charakterisierung der zeitlichen und räumlichen Auflösung von Wärmebildkameras T2 - In: Temperatur 2013 : Fachtagung ; PTB Institut Berlin, 5./6. Juni 2013 ; [Verfahren und Geräte in der Temperatur- und Feuchtemesstechnik ; Tagungsband] / [Hrsg.: Physikalisch-Technische Bundesanstalt, Braunschweig und Berlin]. Fachl. Mitträger: VDI/VDE-Gesellschaft Mess- und Automatisierungstechnik (GMA), Fachgebiet 2.50: Temperatur und Feuchte. - Braunschweig [u.a.] : Physikalisch-Techn. Bundesanst., 2013. - ISBN 3-9810021-8-0 Y1 - 2013 SP - 137 EP - 142 ER - TY - CHAP A1 - Vollmer, Michael A1 - Möllmann, Klaus-Peter T1 - The magic of the invisible: using IR imaging in physics education T2 - In: InfraMation proceedings / Infrared Training Center. - Vol. 14 (2013) Y1 - 2013 ER - TY - JOUR A1 - Vollmer, Michael A1 - Möllmann, Klaus-Peter T1 - Characterization of IR cameras in student labs JF - In: European journal of physics 34 (2013) 6, N2 - The content of a student lab course is described which deals with characterization of the most important parameters governing the performance of infrared cameras. In detail, the parameters describing the temperature resolution, spatial resolution and time resolution of commercial IR cameras are analysed using simple lab experiments. Understanding the respective performance of the system is the prerequisite for applying infrared thermal imaging to quantitative measurements in physics and technology. Y1 - 2013 U6 - https://doi.org/doi:10.1088/0143-0807/34/6/S73 SP - S73 EP - S90 ER - TY - JOUR A1 - Mangold, Klaus A1 - Shaw, Joseph A. A1 - Vollmer, Michael T1 - The physics of near-infrared photography JF - In: European journal of physics 34 (2013) 6, S51-S71 N2 - The physics behind the sometimes strange effects and 'unnatural' appearance of near-infrared (NIR) photographs is discussed in terms of reflection, absorption and transmission of NIR radiation with the respective objects. Besides discussing how NIR cameras work, several visible and NIR photograph pairs are presented, which include vegetation, natural water, clouds, the sky, and humans. In addition, some physics-oriented experimental NIR images are presented which clearly demonstrate some of the basic physics behind some of these awesome sights. Y1 - 2013 U6 - https://doi.org/doi:10.1088/0143-0807/34/6/S51 SP - S51 EP - S71 ER - TY - JOUR A1 - Möllmann, Klaus-Peter A1 - Vollmer, Michael T1 - Fourier transform infrared spectroscopy in physics laboratory courses JF - In: European journal of physics 34 (2013) 6, S123-S137 N2 - nfrared spectrometry is one of the most important tools in the field of spectroscopic analysis. This is due to the high information content of spectra in the so-called spectroscopic fingerprint region, which enables measurement not only of gases, but also of liquids and solids. Today, infrared spectroscopy is almost completely dominated by Fourier transform infrared (FTIR) spectroscopy. FTIR spectroscopy is able to detect minute quantities in the ppm and ppb ranges, and the respective analyses are now standard tools in science as well as industry. Therefore FTIR spectroscopy should be taught within the standard curriculum at university to physicists and engineers. Here we present respective undergraduate laboratory experiments designed for students at the end of their third year. Experiments deal first with understanding the spectrometer and second with recording and analysing spectra. On the one hand, transmission spectra of gases are treated which relate to environmental analytics (being probably the most prominent and well-known examples), and on the other hand, the focus is on the transmission and reflection spectra of solids. In particular, silicon wafers are studied—as is regularly done in the microelectronics industry—in order to characterize their thickness, oxygen content and phonon modes. Y1 - 2013 U6 - https://doi.org/doi:10.1088/0143-0807/34/6/S123 SP - S123 EP - S137 ER - TY - JOUR A1 - Vollmer, Michael T1 - Infrared JF - In: European journal of physics 34 (2013) 6, S49 Y1 - 2013 U6 - https://doi.org/doi:10.1088/0143-0807/34/6/S49 SP - S49 ER - TY - JOUR A1 - Etkina, Eugenia A1 - Planinšič, Gorazd A1 - Vollmer, Michael T1 - Light cone: Engaging students of all levels in processes that physicists use in research JF - In: American journal of physics 81 (2013) 11, 815-822 N2 - A cone of light appears in a tank of water when a laser pointer shines through the water onto a white piece of paper upon which the tank is sitting. We describe how students can understand the origins of this cone by constructing multiple explanations, then proposing and designing experiments to test their explanations. This process is the foundation of the Investigative Science Learning Environment (ISLE) framework, designed to engage students in the reasoning activities similar to those that physicists use to construct and apply new knowledge. We describe typical student ideas and provide a list of equipment and suggestions for facilitating student exploration relating to optics. We also explain the formal physics behind the phenomena that are involved in the experiment. Finally, we suggest how the ISLE framework can be used to help instructors find problems and experiments that engage students in devising and testing multiple explanations. Y1 - 2013 U6 - https://doi.org/10.1119/1.4822176 SP - 815 EP - 822 ER - TY - JOUR A1 - Vollmer, Michael A1 - Möllmann, Klaus-Peter T1 - James Bond und die zerplatzenden Christbaumkugeln JF - Physik in unserer Zeit 44 (2013) 6, 304-306 N2 - Rohe Eier oder wassergefüllte Christbaumkugeln platzen beim Eindringen des Projektils einer Luftpistole. Dieser Vorgang lässt sich einfach durch die sehr geringe Kompressibilität des Wassers und eine damit verbundene starke Druckerhöhung erklären (Physik in unserer Zeit 2013, 44(5), 251). Eine genaue Analyse aller Vorgänge sollte aber auch Fragen beantworten wie: Spielen vorhandene Luftblasen in der Flüssigkeit eine Rolle? Wie lange dauert es bis zum Aufplatzen, und muss die wassergefüllte Kugel eigentlich fest verschlossen sein? Y1 - 2013 U6 - https://doi.org/10.1002/piuz.201390109 SP - 304 EP - 306 ER - TY - BOOK A1 - Nagel, Michael A1 - Mieke, Christian T1 - Marketing- und Vertriebsmethoden KW - Sales-promotion KW - Marketing KW - Vertrieb Y1 - 2014 SN - 978-3-86764-569-0 PB - UVK-Verlagsges. CY - Konstanz ; München ET - 1. Aufl. ER - TY - CHAP A1 - Makrushin, Andrey A1 - Kiertscher, Tobias A1 - Hildebrandt, Mario A1 - Dittmann, Jana A1 - Vielhauer, Claus T1 - Visibility enhancement and validation of segmented latent fingerprints in crime scene forensics T2 - Media watermarking, security, and forensics 2013 : 5 - 7 February 2013, Burlingame, California, United States ; proceedings ; [part of] IS&T/SPIE electronic imaging science and technology T3 - Proceedings of SPIE - Vo. 8665 Y1 - 2013 SN - 978-0-8194-9438-2 U6 - https://doi.org/10.1117/12.2003661 PB - SPIE CY - Bellingham, Wash. ER - TY - CHAP A1 - Wikarski, Dietmar T1 - Locally Markovian object nets - the conceptual model T2 - In: Workshop Concurrency, Specification & Programming : November 19 - 21, 1992 / [Humboldt-Universität Berlin. Hrsg.: Dekan des Fachbereichs Informatik]. - Berlin : Dekan des Fachbereichs Informatik, 1992. - (Informatik-Preprint ; 22) Y1 - 1992 SP - 182 EP - 189 ER - TY - CHAP A1 - Wikarski, Dietmar T1 - Further remarks of the relationship between C-E structures and Petri Nets T2 - In: Concurrency, specification and programming : proceedings of the CS&P '93 workshop, Nieborów near Warsaw, Poland, 14 - 16 October 1993. - Warszawa, 1994. - 273 S. Y1 - 1994 SP - 256 EP - 257 ER - TY - VIDEO A1 - Urban, Alexander T1 - Das Menschenschwein im Visier BT - die Sehnsucht des George Grosz ; English subtitels N2 - Das Menschenschwein im Visier – Die Sehnsucht des George Grosz. Filmische Künstlerbiographie zum 50. Todestag von George Grosz 2009, mit Kommentaren von Norbert Bisky, Gerhard Seyfried, Blixa Bargeld, Johannes Grützke, Jonathan Meese, Reinhard Kleist und Volker Stelzmann. Sprecher: Axel Prahl, Sprecherin: Kati Angerer, 63 Minuten KW - Grosz, George KW - Kunst KW - Soziale Wirklichkeit KW - Dokumentarfilm Y1 - 2009 PB - Fachhochschule CY - Brandenburg ER - TY - BOOK ED - Schleicher, Harald ED - Urban, Alexander T1 - Filme machen BT - Technik, Gestaltung, Kunst ; klassisch und digital N2 - Filme machen im digitalen Zeitalter: Alles einfach. Oder nicht? Das umfassende Handbuch zu allen Bereichen der modernen Filmproduktion. Seit leistungsfähige digitale Videokameras und Computer zum Schneiden preisgünstig zu erwerben sind, kann prinzipiell jeder zum Filmproduzenten und Filmemacher werden. Manch einer spricht gar von einer „Demokratisierung“ des Mediums: Jede und jeder wird zum Autorenfilmer. Aber die Erfahrung, die Grafiker und Web-Designer gemacht haben, müssen jetzt auch angehende Filmemacher machen: Das Wissen, wie man mit Medien umgeht und sie gestaltet, muss erst erworben werden. Jetzt gibt es das Handbuch „Filme machen“: Es behandelt alle technischen und gestalterischen Aspekte der Filmproduktion - klassisch und digital. Von der kreativen Arbeit mit der Kamera, der Gestaltung von Licht und Ton über die Grundlagen von Montage und Compositing bis hin zur Budgetkalkulation und Finanzierung. Was die Gattungen Spiel-, Dokumentar- und Experimentalfilm in der Produktion unterscheidet, wird ebenso thematisiert wie die Frage, wie sich das Medium zukünftig entwickeln könnte. Ein reicher Anhang mit einem Fachwortglossar, Adressteil und einer kommentierten Aufstellung deutscher Filmfestivals rundet das Buch ab. Herausgegeben wird „Filme machen. Technik, Gestaltung, Kunst. Klassisch und digital“ von Harald Schleicher und Alexander Urban, Professoren für Film- und Mediengestaltung. Alle beitragenden Autoren lehren an deutschen Hochschulen. (Angaben aus der Verlagsmeldung) KW - Filmtechnik KW - Digitale Filmtechnik Y1 - 2005 SN - 3-86150-700-5 N1 - Mit Beitr. von Hans Beller ... Alexander Urban PB - Zweitausendeins CY - Frankfurt am Main ER -