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Movie

Bruchrechnen II

Die DVD beschäftigt sich mit:

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The Otto Engine

This DVD offers an insight into the historical birth of the Otto engine and also describes its latest version – the hybrid engine. In addition, other engines of the future are covered. The life and achievements of Nikolaus August Otto are dis- cussed, with all his successes and failures, from his first en- gineering attempts when reconstructing the Lenoir engine to the presentation of the “atmospheric gas engine” on the Paris World Fair through to his cooperation with Gottlieb Daimler and Wilhelm Maybach. The mode of operation of the Otto engine is explained to the pupils in detail, also with the help of a variety of animations and diagrams. The DVD goes into the four strokes of intake, compression, power and exhaust as well as the Otto engine as energy converter. Crude oil is one of our most important sources of energy. Besides outlining the evolution and processing of crude oil into fuel, this DVD puts emphasis on the increasing shortage of global crude oil resources. Alternative propulsion sources like hybrid engines as well as hydrogen-fuelled or gas-fuelled vehicles offer an environmental-friendly vision for the automobile’s future in times of global climate change.

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Movie

Bilder laufen

Das Prinzip der Camera Obscura war bereits Aristoteles bekannt. Heute gilt sie als Vorläufer der modernen Fotografie.

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Solar Energy

80 % of our current energy needs are covered by fossil fuels (coal, oil, gas). Their supply may soon lead to severe problems as worldwide stocks will be exhausted one day. That is why the future belongs to renewable energy from sun, wind, water, and biomass. The Sun as an inexhaustible energy source is estimated to be available to us for another 4.5 billion years to come. It supplies us with “clean energy“ that is available everywhere on earth and that exceeds worldwide energy needs many times over. The film presents the pupils with the long history of solar energy use. The functioning of solar collectors, solar cells and solar power plants is explained, the current operating ranges of solar technology are dealt with and an outlook for the future is provided. With the act on the phasing-out of nuclear energy Germany has taken over a pioneering role worldwide in the field of renewable energies. Together with the extensive accompanying material the DVD is ideally suited for use in the classroom.

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Celts

The term “Celts“ refers to a great number of different ethnic groups. So we do not speak of one “Celtic people”, at any rate not according to modern ethnic criteria, but rather of tribes within the circle of Celtic culture.

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The Weimar Republic

In the heart of the federal state of Thuringia, there is the small town of Weimar, in which the cultural histories of Germany and Europe are blended together in a confined space.

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Genghis Khan

They appeared all of a sudden, as if from nowhere. Wild Mongol hordes on horseback overrun the Asian Steppes and Russian expanses at the beginning of the 13th century. Nobody can hold up their triumphal march. The leader of the Mongols is Genghis Khan, a merciless conqueror and visionary statesman. His myth is still topical today. The myth of Genghis Khan, the “Apocalyptic Horseman”. The film describes the development of the young Temujin to one of the greatest generals in history. Impressive pictures show the live of Genghis Khan from the cradle to the grave. By maps used systematically, his military campaigns are shown and a timeline, which is repeatedly displayed, provides the dates of the conquests. This way, pupils can gain a better understanding of the campaigns and remember the dates better. Interesting bonus material on 13th century Europe and comprehensive accompanying material invite you to cover all aspects of the topic. Thus, history lessons become an impressive experience.

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Great Disasters II

A disaster occurs when the balance inherent in a particular phenomenon is disturbed. This may happen either because a new powerful force comes into play that triggers the disaster or because a small – even tiny – causal factor interferes in a situation with an unstable equilibrium and manages to achieve an enormous effect.

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Materials and Substances of Everyday Life

Hearing these words, you first think of the materials our clothing is made of. But all objects surrounding us in everyday life consist of one or several materials.

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Demography

Demography is the science that examines the structure and dynamics of population. Demographic change describes the dynamics of population size and structure. Tools of the trade for demographers are statistics.

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Nathan the Wise

Nathan the Wise by Gotthold Ephraim Lessing is considered one of the most important dramas of German literary history still today, 235 years after its premiere in Berlin on April 17, 1783. The notion of tolerance of the Age of Enlightenment concerning the various religions in their relationships to each other actually is what makes the play topical still today.

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Movie