Marktplatz für digitale Bildungsmedien
Nachdem die Bewerbung und das Vorstellungsgespräch erfolgreich gewesen sind, folgt der erste Arbeitstag. Dafür sollte man die passende Garderobe anziehen und bestimmte Unterlagen mitbringen. Dieser Film gibt einen Überblick darüber, was am ersten Arbeitstag passieren wird und was man beachten sollte.
Am 1. August beginnen die Ausbildungen. Um die passenden Auszubildenden für den Betrieb zu finden, laden die Unternehmer die Verfasser ansprechender Bewerbungen zu einem Vorstellungsgespräch ein. Wie diese Gespräche ablaufen und wie man sich angemessen darauf vorbereitet, wird in diesem Film erklärt.
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.
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.
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 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.
Im ersten Teil zeigt der Film, wie Mond und Sonne auf die Wassermassen der Meere einwirken. Im zweiten Teil werden die verschiedenen Zonen im Lebensraum der Gezeiten vorgestellt - je nach Beschaffenheit des Untergrunds und der Menge an Wasser gedeihen dort andere Pflanzen.
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.
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.
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.
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.
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.
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 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.
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.
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.
An Bord des Nasa-Rovers auf dem Mars befindet sich der kleine Helikopter "Ingenuity". Er wird der erste Helikopter sein, der auf einem anderen Planeten einen Erkundungsflug durchführt und dabei Bilder aufnimmt. Helikopterdrohnen sollen auch eingesetzt werden, wenn erste Menschen auf dem Mars gelandet sind.
Nach sieben Jahren Forschung und Entwicklung hat die NASA die Rakete und das Raumschiff für die Mondlandung fertiggestellt. Der Film erklärt den Aufbau und beschreibt Start und Reise. Vor der Landung auf dem Mond gibt der Computer Alarm, und innerhalb von Sekunden muss eine Entscheidung getroffen werden.
In diesem Video erklärt Tim Ruster das berühmte Gedankenexperiment von Erwin Schrödinger und geht der Frage nach, ob die Katze denn nun tot oder lebendig ist. Hierbei werden auch die Grundzüge der Quantenmechanik erörtert.
In diesem Video erklärt Tim Ruster das berühmte Fermi-Paradoxon und erklärt auf wissenschaftliche Art und Weise die Chancen für außerirdisches Leben im Kosmos. Welche Erklärungen könnte es dafür geben, dass bislang noch jede Spur von Außerirdischen fehlt?
In diesem Video erklärt Tim Ruster die physikalischen Grundlagen von Schwarzen Löchern. Warum entstehen sie, wenn sehr schwere Sterne explodieren? Was ist ein Ereignishorizont? Und gibt es auch Weiße Löcher?
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.
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.
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 topic of this video is the relationship between voltage and amperage. The film introduces the units of measurement volts for electrical voltage, watts for power, joules for energy, and amperes for amperage. It explains why the higher the voltage, the lower the amperage needed for certain outputs.
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.