Stations-ID: A002

Instructions:

• Can you stand straight? Check yourself and the others, in what angle are you standing to the floor?
• Walk slowly in a circle. Pay attention to how it feels! Is it the same that your eyes see?

Marble scale:

• Adjust the wooden channel so it is horizontal. To see if you are correct, you can place a marble on it. If the wooden channel really is horizontal, the marble should not move much. 

Perpendicular pendulum:

• As soon as the pendulum is released from its anchor, it will point vertically downwards. 
• Using a wooden marble, give a guess as to which one of the boxes the tip of the pendulum will point to.

Marble Track:

• Where does the marble have to start to be able to traverse the whole marble track?

Not only in Jena can you find leaning houses. In Ulm, a half-timbered house from the 14th century advertises itself as the “most crooked hotel in the world”. The Oberhafen canteen in Hamburg, the old fulling mill in Wernigerode and the “leaning houses” in Idstein and Großbottwar are also very crooked.

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Stations-ID: A007

Instructions:

On this bike, you too can become a tightrope artist.

• How heavy do you think the balancing arm is? How long is it?
• Where is the centre of gravity on a normal bike?
• Where is it on the tightrope bike?

Unfortunately, the tightrope bike is out of service during winter. As the steel rope contracts at low temperatures, it must be loosened as soon as the first frost sets in. 

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Stations-ID: A010

Instructions:

Go inside and listen!

• Where does the sound come from?
• Which way does the sound go?
• Where does the sound go?
• What could the sound be?

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Stations-ID: A006

Instructions:

A round track – But is the chair driving on it in its initial position after one round?

• How many rails is the track made up of?
• In what position would you arrive after one round, if the chair could not turn?

The stainless steel construction has a different angle in every segment, which could not be calculated before the build. Therefore, a wooden model had to be built to scale to discern the correct measurements required.

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Stations-ID: A009

Instructions:

How can ice skaters do such fast pirouettes? On the pirouette machine, you can try to speed up or slow down the rotation. The rotating chair in the hall works similarly! 

• Stand on the platform and hold onto the handrail. Try to get yourself spinning with your feet. What happens if you pull yourself towards the centre?
• What happens when somebody slowly climbs onto the moving platform?
• What happens when somebody jumps off?

On the pirouette machine, several visitors can experience the principle of conservation of angular momentum. You can find a theoretical explanation of this principle at the ‘rotating chair’ 

This station was conceptualized and built by students of the Ernst-Haeckel-Gymnasium. 

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Stations-ID: A011

Instructions:

Take place opposite of each other and speak towards the wall.

• Can you understand your partner better when he is facing towards you while speaking, or when he whispers sideways, towards the wall?
• While speaking loudly, move towards the centre of the whisper shell. What do you hear? What do the others hear?

One person takes position in the centre and tries to either speak to the others or listen to their conversation.

• Standing in the middle, say a few words. How does your voice sound to you? How does it sound to the others?
• Do you have an idea as to why the dome is open at the top?

The dome of St. Paul’s Cathedral in London has a circular whispering gallery approximately 32 metres in diameter. Two visitors standing opposite each other can either communicate by shouting across the centre or whisper very quietly against the wall.

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Stations-ID: A001

Instructions:

• How many people have to stand on the shorter end of the seesaw in order to lift the longer end?
• Are you able to balance the beam out?
• What do you think: How heavy is the beam?
• How many more people must stand on the short end in order to lift a person standing on the long end?

„Bürger in Bewegung“ (Moving Citizens) is the title of the planned monument to the reunification of Germany in Berlin. The design by Stuttgart architects Milla and Partner and the Berlin-based artist Sasha Waltz comprises a dish set up so that it can be shifted to the side by a sufficient amount of people.

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