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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.
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.
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.
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.
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.
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.
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.
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 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 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.
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.
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.
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.
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.
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.
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.
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.
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.
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 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.
Ob vor einem Auftritt, einer Prüfung oder einem Interview - Lampenfieber ist den meisten Menschen bekannt. Das Gefühl ist unangenehm und versetzt uns in Aufregung. Die Reportage zeigt hilfreiche Wege, wie Schülerinnen und Schüler in der jeweiligen Situation mit der Angst umgehen und sie überwinden können.
Das Gehirn merkt sich einige Informationen passiv und muss andere aktiv erlernen. Für Letzteres eignen sich zum Beispiel das "Mastersystem" und die "Loci-Methode". Der Erklärfilm erläutert, was es mit gehirngerechtem Lernen auf sich hat und welche Rolle die Fantasie dabei spielt, sich Dinge einzuprägen.
Viele Schülerinnen und Schüler haben Probleme mit dem zielgerichteten und effektiven Lernen. Diese Reportage zeigt verschiedene Wege dafür auf: Es sind neue und ungewöhnliche Lernmethoden, die die Motivation steigern. Zudem gibt es eine Reihe praktischer Tipps, die das selbstständige Lernen unterstützen.
Das Video erklärt den Zusammenhang zwischen Lernen und Bewegung. Der Reifungsprozess von Geist und Körper wird hier thematisiert. Die Bewegungserfahrungen und deren Bedeutung für die Entwicklung des Gehirns werden ebenfalls beschrieben.
Reportage: "Bloß nicht stillsitzen! Lernen mit Bewegung" - seit fünf Jahren läuft das Projekt an der Offenen Schule Waldau in Kassel. Schüler und Lehrer zeigen, welche Methoden sich im Schulalltag bewährt haben. Die Reportage motiviert SchülerInnen zur Nachahmung und gibt konkrete Übungsbeispiele.
Das Erklärvideo beschreibt verschiedene Tätigkeiten, die während des Lernens durchgeführt werden. Die Lernstrategien "Lernen mit Gesten", "Lernen mit Rhythmus" und "Lernen mit Sound" werden mit Beispielen erläutert.