Marktplatz für digitale Bildungsmedien
Welche Kräfte bewegen unsere Welt? Diese Frage beschäftigte schon die alten Griechen. Die Dokumentation zeigt, wie und durch wen sich die Wissenschaft der Physik entwickelt hat, und zeichnet die gravierenden Änderungen nach, die die Fortschritte in diesem Bereich auf die menschliche Sicht der Welt hatte.
Einer der bedeutendsten Wissenschaftler unserer Zeit, Stephen Hawking, stellt sich in dieser Dokumentation den großen philosophischen Fragen zur Existenz. Außerdem befasst er sich mit den Fragen zu Außerirdischen, Zeitreisen, dem Urknall und dem Anfang und Ende der Zeit auf allgemein verständliche Art.
Alexander McQueen war Designer und das Enfant terrible der Szene. Seine außergewöhnlichen und dem Punk entlehnten Entwürfe schockierten und regten zum Nachdenken an. Seine Modenschauen wurden regelmäßig von Skandalen begleitet, und doch berührte das Ausnahmetalent die Menschen auf ganz besondere Weise.
Dieses Medium beinhaltet genaue Beschreibungen der Basistechniken Bankstand, Oberschenkelstand, Schulterstand und Stand auf den Schultern sowie Formen der Waage und des Handstands. Die Übungen, die hier zum Nachmachen demonstriert werden, bieten Anfängern und Fortgeschrittenen ein umfangreiches Programm.
Der Dokumentarfilm betrachtet das Zusammenleben von Menschen und humanoiden Robotern. Er erzählt unter anderem die Geschichten eines US-Amerikaners, der einen Roadtrip durch Kalifornien mit seiner Roboter-Partnerin unternimmt, und einer alten Dame, die in Tokio von ihrem Sohn einen Roboter geschenkt bekommt.
Bei den alternativen Antrieben für Autos haben Batterien aktuell die Nase vorn: Tesla-CEO Elon Musk etwa glaubt nicht an Brennstoffzellen. Der Film erklärt die Nachteile der Zellen, zeigt aber auch auf, woran es bei den Batterien hapert und weshalb sich die Brennstoffzellen doch noch durchsetzen könnten.
This film presents four common semiconductors that we use frequently in everyday life. It explains the structure and functioning of the thyristor, the triac, the photo-semiconductor, and the LED and shows examples of where they are used - such as washing machines, elevators, light switches and headlights.
Optical devices influence the course of light rays through lenses. The film shows how lenses are made in the eye and in visual aids such as glasses. The much stronger lenses of magnifying glasses and microscopes are also examined in detail. It is explained how exactly the multiple magnification is achieved.
Optical lenses are transparent, light-refracting bodies with at least one curved surface. The video introduces the different forms of lenses and how they work and shows their uses. Important terms such as focal point, refractive power and focal length are explained and the two lens formulas are derived.
Taking water as an example, the film explains the different states of aggregation of a substance. Below 0 °C, water is solid – it exists as ice. At its melting temperature of 0 °C it takes on liquid form, and at boiling temperature of 100 °C it changes to the gaseous state at normal pressure.
When light rays fall through a small hole in the front wall of an otherwise light-proof box, the image of the object that is in direct line in front of the hole is imaged overhead on the inside back of the box. The film describes step by step how this image is created and how to calculate the image size.
Power is a measure of the speed of work, and the watt is the unit in which energy consumption is measured. The film gives the definition of watt. You can compare mechanical, thermal and electrical power and easily convert them into each other. This video explains why and how this conversion is possible.
If the curvature of a curved mirror is convex, it distorts the mirror image. If it is concave, this is also true, except that the image is also upside down. The film explains why this is so and how the laws of reflection explain it. In addition, the video shows possible applications for everyday life.
For a surface to reflect light, it must be very smooth. A regular reflection is given, for example, by processed glass and metal, which are used to make mirrors. The film explains the law of reflection, the creation of illusions through partial reflection, and that the mirror image is a result of our own perception.
The first semiconductors were discovered in passing when people wanted to make the light bulb more economical. Since then, a lot has changed about them. The film retraces this development and explains not only how the diode works, but also some important technical terms and the use of semiconductor diodes.
No other component is used as frequently in electronic devices as the transistor. This video tells the story of the component: how it was invented, how it revolutionized and drove technology, how exactly it works and what uses have been found for it over time - especially since the beginning of the digital age.
Mass is one of the seven basic physical quantities. This video gives an understandable definition of this quantity, names its unit of measurement and explains how it is related to the force of weight. Colloquially and outside the physical context, mass is also called weight, which can lead to confusion.
The invention of the diode was soon followed by the development of another electrode - the triode. This was the first amplifier. These amplifiers were used extensively until the transistor almost completely replaced them. As the video shows, electron tubes are now only used in high-end guitar amplifiers.
In addition to conductors and non-conductors, there are also so-called semiconductors with regard to electrical conductivity. Using the example of silicon, the film explains how a substance can change from a non-conductor to a conductor under certain conditions. It mentions the many possible uses of semiconductors.
With the colours blue, yellow and purple, all colours can be produced. This is due to subtractive colour mixing: the colours act like a filter that prevents you from still seeing the original colours. The video explains understandable how the absorption spectrum of the filter makes some colours visible.
For a temperature measurement procedure to be exact, it has to be reliable and repeatable. This films looks at different temperature measuring devices, namely the thermometer, the bimetallic thermometer, and the resistance thermometer, which depend on changeable substance properties at different temperatures.
This video shows how the state of motion, gravity and magnetic attraction of objects changes when different physical forces act on them. The film shows that the effects of these forces are measured in Newtons and that they are vector quantities. The law of interaction is also explained with examples.
The physical term work is defined as the force exerted on a body in a certain way. In physics, a distinction is made between the work of lifting, acceleration, deformation, tension and friction, as the video explains with the help of examples from everyday life. The unit used to measure work is the joule.
Archimedes originally set out the law of the lever. The film shows how it has been developed since then and how it leads directly to the law of rotation. The law is explained and its practical uses demonstrated, for instance the wheel and axle which is used in ship´s rudders and many times in bicycles.
Electrical engineers often use transformers. They can easily turn a low primary voltage into an unequally higher or lower secondary voltage. How this works in detail, for what purposes one needs this transformation in everyday life and what electromagnetic induction is exactly, is explained in the film.
The moon does not shine itself, but only reflects the light of the sun. That is why the phases of the moon depend on it. The film shows how the moon changes in our perception depending on the angle it is at to the sun. At an angle of zero degrees it is new moon, at an angle of 180 degrees it is full moon.
This video explains the concept of a magnetic field. It clearly describes some essential effects of magnetism and illustrates the concept of field lines. The film shows what the Earth´s magnetic field is all about, it clarifies geographical and magnetic poles and goes into the phenomenon of declination.
Die Zollbehörde arbeitet nicht nur an Flughäfen und Häfen, sondern bekämpft auch die Schwarzarbeit sowie den Waffen- und Rauschgiftschmuggel. Die Kamera ist dabei, wenn Beamte der Bundesbehörde Grenz- und Passagierkontrollen durchführen und im Hamburger Hafen Container auf illegale Inhalte prüfen.
In this video, the basic functional principle of the electric motor is explained. Among other things, the structure of the rotor, the stator, and the commutator in the DC motor are clearly illustrated. The film then shows the different uses of permanent magnets and electromagnets in the electric motor.
500.000 Fahrgäste nutzen die Stadtbahn Hannover jeden einzelnen Tag, was sie zum wichtigsten öffentlichen Verkehrsmittel der Region macht. Sie ist Arbeitgeber für Hunderte Mitarbeiter - vom Fahrer über den Verkehrsplaner bis hin zum Mechatroniker. Die Reportage bietet einen Blick hinter die Kulissen.
If forces act on a body at different points of application, their effect is different. The film shows which rules are used to determine the resultant of two individual components on the one hand, but also two individual forces from the resultant, a component, or an angle on the other by means of the parallelogram of forces.
This video explains the basics of additive colour perception. Topics covered include additive colour mixing of red, green and blue, spectral colours, the colour wheel and complementary colours. The film also explains how colour perception takes place through the combination of the eye and the brain.
The topic of this video is capacitors. They are passive components in electrical circuits that can store energy. The film shows how exactly capacitors work and how differently they react to direct and alternating current. There is a whole range of devices in which the versatile little storage devices are used.
Electricity flows in an electric circuit. With switches, you can interrupt this flow. The video explains how the various switches such as push-buttons, circuit breakers and sensor switches work. Various examples of the AND- and OR-switch show that an electric circuit can also be interrupted several times.
The subject of this film is the simple CCR circuit. It is explained using the example of a radio with an external loudspeaker. The first C stands for the coil, the second for the capacitor, and the R for the resistor. The film explains how the coil and capacitor can be used as filters for high and low frequencies.
The electrical component coil works with an interaction of electricity and magnetism. The video shows how electromagnetic induction works, i.e., the generation of electrical voltage on an electrical conductor by a changing magnetic field. The film explains inductance and Lenz´s rule and introduces the many uses of coils.
If we perceive something as heavy, this is due to the high mass of the object with its comparatively low volume. The density of an object is defined as the ratio of its mass to its volume. The film uses a number of everyday examples to show how the mass of substances can vary greatly for the same volume.
We take it for granted in everyday life that electricity "flows". This video explains electrical circuits and the movement of electrical load carriers within them. It also looks at conductors and insulators, at the effect of negatively and positively charged materials on one another, and at induction.
Lorentz force describes the effect of magnetic fields on moving electrons. It acts perpendicularly to the magnet´s field lines and to the direction of the electrons. The film shows how to determine the direction of movement of the electrons using the three-finger rule and where this force is used for technical purposes.
The electrical resistance is defined as the quotient of the voltage and the strength of the current flowing in a circuit. At the same time, resistance also refers to a component with which a certain resistance can be realized in an electrical circuit. The film explains both terms using understandable examples.
Georg Simon Ohm discovered that voltage and current are interdependent. This video explains electrical resistance, Ohm´s law and the relationships that can be derived from it. The influence of length, strength, and temperature of a conductor as well as the calculation of electrical resistance are further topics.
The subject of this film is electromagnetic induction. A conductor loop suspended in a magnetic field illustrates how mechanical energy can be converted into electrical energy. A brief history of electromagnetic induction is given, the AC and DC voltages are explained and areas of application in industry are shown.
Electricity flowing through a wire generates a magnetic field. If this wire is twisted into a coil, the magnetic fields of the individual turns merge into a single stronger field. An iron core in the middle can intensify this effect. With this description, the video explains the construction of an electromagnet.
A electromagnet is made up of a coil with an iron core around which a magnetic field is generated as soon as electricity flows. This film shows how electromagnets can be used, for example as relays for high voltage circuits, for doorbells, in magnetic resonance therapy, and in particle accelerators.
The subject of this video is energy. There is the mechanical, the thermal and the electrical energy. Energy is not produced or consumed, but transformed. The film explains this using the law of conservation of energy. It is shown how one form of energy is converted into another, and the unit joule is explained.
Inertia is a physical property of all bodies. The video explains the law of inertia, according to which all bodies remain at rest or in uniform motion until an external action stops it. We encounter the law of inertia everywhere in everyday life, as the film illustrates with examples such as car and train travel.
Levers are simple machines, or more precisely, they are mechanical force converters that magnify the force which is applied. The film explains the law of levers and shows the different forms of levers. Examples of different lever tools are given, such as scissors, tweezers, wheelbarrows, and nutcrackers.
Light travels at very high speed in a vacuum as well as in the air. As soon as it hits a denser material, however, its speed is slowed down. The film explains the refractive index, demonstrates why light rays are deflected in water, for example, and shows what angle is needed for a total reflection.
Dr. Gordon Shaw von der Universität von Kalifornien führt ein langes Experiment mit 90 Schulkindern in einem armen und gefährlichen Viertel von Los Angeles durch: Sie dürfen ein Instrument lernen - und nach vier Jahren verbessern sich sprunghaft ihre schulischen Leistungen. Ob das an der Musik liegt?
Eine unsichtbare Kraft zieht Metallgegenstände an. Was macht einige Gegenstände magnetisch und andere nicht? Der Film zeigt in anschaulichen Animationen den Aufbau von Magneten und befasst sich mit Theorie und praktischer Anwendung magnetischer Felder wie zum Beispiel in Festplatten und Mikrofonen.
Die Muttersprache ist als Sprache der Emotionen wichtig für die Persönlichkeitsentwicklung. Wird sie gefördert, fällt auch das Erlernen einer Zweitsprache leichter. Für viele Menschen ist die Nutzung zweier Sprachen bereits Alltag. Dieser Film möchte auf die Möglichkeiten sprachlicher Vielfalt hinweisen.
Ein weiteres Mal geht es in die 1950 gegründete Druckerei Fell. Der Film zeigt die Herstellung eines Prospektes von der Materialbeschaffung über das Layout bis zum fertigen Produkt. Deutlich wird, dass vieles, was früher in Handarbeit gefertigt wurde, heute der Computer erledigt.
Zum Verständnis von sozialer Kompetenz ist es wichtig zu verstehen, was es heißt, mit Konflikten innerhalb eines Teams umgehen zu können. Szenen aus einer KFZ-Werkstatt und Seminar-Rollenspiele zeigen, wie soziale Kompetenz (sprich: gelungene Kommunikation) zu erfolgreicher Gruppenarbeit befähigt.
Der Film beschreibt, wie bei Audi junge Azubis durch Training von Team-Fähigkeit innerhalb eines 5-wöchigen Projektes auf die Arbeitswelt von morgen vorbereitet werden. Arbeitszeiten müssen ermittelt und ein Zeitplan erstellt werden, damit alle wissen, wann sie anfangen und wann fertig sein müssen.
Seit drei Wochen arbeiten 12 Auszubildende bei Audi an einem Projekt. Was haben sie gelernt? Sind sie zufrieden? Es wird deutlich: Wo Probleme auftauchen, ist die Ursache oft schlechte Kommunikation. Die Rolle von Teamsprecher Josef - der immer wieder Probleme lösen konnte - wird hervorgehoben.
Mädchen machen sich besser in Aufnahmeprüfungen, haben die besseren Abschlüsse. Jungen werden bei der Anstellung bevorzugt - warum? Drei junge Frauen schildern ihre Erfahrungen in einem "männlichen" Beruf. Wie reagieren ihre männlichen Kollegen? Auch eine Gleichstellungsbeauftragte kommt zu Wort.
Der Film schildert den Arbeitsalltag in einer mittelständischen Druckerei und das Ringen des Managements - der Familie Fell - um die Bewältigung betriebswirtschaftlicher und technischer Herausforderungen in Zeiten wachsenden Konkurrenzdrucks.
Judith Aicher, selbstständige Tischlermeisterin, zeigt am Beispiel der Herstellung eines Bettes die Arbeitsschritte vom Kundenkontakt bis zur Fertigstellung und gibt wertvolle Tipps zum Thema Ausbildung und Beruf - z.B. hält sie eine Tischlerlehre für eine gute Voraussetzung zum Architekturstudium.
Endlos wiederkäuend machen glückliche Kühe aus saftigem Gras gesunde Milch. Im Zuge von Produktionssteigerung und Rationalisierung kommen viele Kühe heute allerdings gar nicht mehr aus dem Stall heraus. An diesem Beispiel zeigt der Film Vor- und Nachteile von Entwicklungen in der modernen Landwirtschaft.
Claudia macht eine Lehre. Sie bekommt von ihrem Meister eine Aufgabe, die sie noch nie gemacht hat und kann nicht zugeben, dass sie einiges noch nicht kann ... In Szenen und Rollenspielen lernt Claudia, die eigenen Fähigkeiten richtig einzuschätzen und, wenn nötig, Hilfe zu holen.