DLR - DLR_School_Lab - Experiments

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	Mission to Mars Mars, der äußere Nachbar der Erde ist schon in der Antike den Menschen wegen seiner rötlichen Färbung aufgefallen. Sie ordneten diesen Himmelskörper dem Kriegsgott zu. Nachdem die Menschen den Mond erreicht haben, wäre der Mars das nächstmögliche Ziel in unserem Sonnensystem, denn die Bedingungen auf der meistens näheren Venus sind zu lebensfeindlich.
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	Comet simulation Dirty snowballs with tails? What is the structure of a comet? What is its tail made of and how does it get there? We look for explanations concerning this impressive heavenly phenomenon. The entire text is only available in German.
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Material properties

Why does glass break, sheet metal bend, and why are ceramics brittle?

How would we feel as aircraft passengers if we could not rely on the strength of the wings in critical situations? Or would we like to be on the top floor of a skyscraper if we were not certain that it could withstand the force of the wind also at this height? Determining, understanding and optimizing the properties of modern materials is often a matter of life and death!

The entire text is only available in German.

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	Noise control Can you get rid of noise with noise? If you could overlay two sound waves of the same frequency and volume so that the "peaks" of one wave exactly match the "valleys" of the other wave, then the two sound waves would cancel each other. This effect will soon be used to reduce the noise caused by airplane engines. The entire text is only available in German.
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	Microgravity Investigating slow motion in a drop tower What is microgravity? What is gravity? Why does an apple fall downward when it is dropped on earth, whereas it drifts away from an astronaut on the International Space Station? The entire text is only available in German.
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	Vacuum Research in an airless environment Already in 1654 Otto von Guericke, the mayor of Magdeburg, fascinated the emperor with a spectacular experiment on the subject of vacuum: 16 horses couldn't pull apart something that was being held together merely by air pressure, namely the two halves of a large copper sphere. How could that be true? The entire text is only available in German.
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	Infrared Invisible light Can James Bond really see through walls with an infrared camera? Who among us has the coolest head? Why do mammals have fur? Can colors be warm or cold? - All questions you can investigate in this experiment. The entire text is only available in German.
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	Solar water purification Can the sun clean water? If water could be purified just with sunlight and some reusable substance, then we could kill two birds with one stone: the water would be free of pollutants and the environment free of hazardous chemicals. How could that be done? The entire text is only available in German.
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	Fuel cells Are our energy sources limited? The sunlight which reaches the surface of the earth amounts to about 165 watts per square meter. This energy keeps the earth's atmosphere moving; it produces the weather - wind and rain - and is turned into biomass by plants and single-celled algae. The entire text is only available in German.
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Gravitation biology

How does a paramecium know what's up and what's down?

Of course, most living things know where up is and where down is, otherwise they could not find their way around their world. This ability helps them to find food and to avoid dangerous places. But is that true for single celled organisms as well? Do even paramecia respond to earth's gravitational field?

The entire text is only available in German.

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	Circulation physiology So that your circulation doesn't get confused All life on earth eveloped under the influence of gravity. Our own circulation system is also adapted perfectly to it. Nevertheless, astronauts can rely on it to function also under weightless conditions. How come? The entire text is only available in German.
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Mission to Mars

Comet simulation

Material properties

Noise control

Microgravity

Vacuum

Infrared

Solar water purification

Fuel cells

Gravitation biology

Circulation physiology