Stations-ID: D012

Instructions:

• Spin the disk slowly.
• Concentrate your gaze on the centre of the spiral for approximately one minute.
• Then turn your gaze to a motionless object, like your hand, or the wall.
• What can you see?
• What happens when the spiral is moving in the other direction?

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Stations-ID: D010

Instructions:

Spin the wooden disk slowly and look at it from a distance of 2 meters.
• What kind of patterns can you see on the disc?
• What do the patterns look like when the disc is rotating?

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Stations-ID: D018

?? English instruction:

• What colours are in the pictures on the wall or your clothing?
• What colour does normal day-light or the light of the hand lamp have?
• What do the colours look like in white light?
• What colour does the sodium vapour lamp in this room have?
„Rays are not colored.“
Sir Isaac Newton (1642-1827)

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Stations-ID: D056

Instructions:

Lenses can also be very flat! This one will magnify, demagnify, distort and turn the world upside down.

• Where do you and your partner have to stand to see each other through the lens?
• Stand on both sides of the lens with a partner, looking at each other.
• At which point can your partner see you clearly, at which point not?
• What happens when your partner walks slowly away from the lens?
• Look at the lenses in the window. Do they all look the same or different?

Both the French Georges-Louis-Leclerc de Buffon (1707-1788) and Marie Jean Antoine Nicolas Caritat, Marquis de Condorcet (1743-1794) as well as the Scottish kaleidoscope inventor Sir David Brewster (1781-1868) had already considered a thin and light lens shape made of concentric glass rings. The physician and engineer Augustin-Jean Fresnel (1788-1827), who was appointed by the French government as secretary of a specially founded beacon authority, came up with the idea of using such lenses for the improvement of beacon optics. The first “Fresnel apparatus” was not put into operation until Fresnel’s death in the year 1832.

Stations-ID: D011

Instructions:

Position yourself one meter away from the disc and try not to fix a point, but let the whole thing work on you.

What do you observe?

In contrast to the other discs in this area, this disc cannot be rotated.

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Stations-ID: D045

Stations-ID: D073

Instructions:

Attention! Please no more than two people on the platform!

Get on the platform and slowly move forwards. What do you see when you look down? What happens when you go further forward?

Stations-ID: D059

Stations-ID: D051

Instructions:

Take one of the wheels out of its slot and hold it in front of your face, so that you are looking at its black back. Now look at the mirror through the uppermost slot with one eye. Spin the wheel – slowly at first, then faster. First to the right, then to the left.

• What do you see on the disc?
• What do you see in the mirror when you look through the slots in the disc while it is rotating?
• What happens when the rotation is very slow?
• What do you see when looking directly onto the rotating disc?

The Belgian physicist Joseph Antoine Plateau (1801-1883) and the Austrian mathematician and geodesist Simon Ritter von Stampfer (1792- 1864) independently described the principle of perforated rotating discs for the representation of motion sequences.

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Stations-ID: D013

Instructions:

What do you see in blacklight?
• Examine the documents in the showcase, what do they look like in daylight?
• What do your clothes look like in blacklight?
• Smile at each other and you will be surprised!

Blacklight has a high percentage of ultraviolet light. UV – radiation is not visible for the human eye, but can cause specific materials to glow.By using such materials, banknotes or ID cards are made forgery-proof. 

Blacklight parties derive a great deal of their novelty from the use of flourescent materials. Gin Tonic is a very popular drink at such events because the chinin contained in tonic water appears blue in blacklight. It has been reported that students at MIT cover themselves in the cream filing of “Twinkies”, leading to a flourescent effect on the skin. 

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Stations-ID: D041

?? English instruction:

Two people stand at the edges of the mirror facing each other.
Stand at the edge of the mirror in such a way that one leg is behind and one leg
is in front of the mirror, so that only half of your body can be seen. To keep your
balance you can also hold on to the bar behind the mirror. Now raise your leg in
front of the mirror and watch each other’s mirror image.
Do you have more ideas for similar illusions?
• What do you see? What do the others see?

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Stations-ID: D009

Instructions:

Concentrate your gaze on the striped wall and balance on one leg at the same time.

Now your partner makes the wall swing sideways.

• How long are you able to stand on one leg?

• What happens when you close your eyes?

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Stations-ID: D019

?? English instruction:

Stand between both mirrors.

Compare this experiment with the mirror tunnel – what are the similarities, what are the differences?

• Look at your mirror images – how often can you see yourself from the front and from behind?

• What would you see if the mirrors were standing parallel to each other?

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Stations-ID: D044

?? English instruction:

Two mirrors are standing parallel to each other and a small slot allows the view into the infinite.

• Hold your hand into the Mirror Tunnel while you are looking through the slot – how often can you see it?

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Stations-ID: D058

Instructions:

In front of you, you find a twisted space. Where is up and down?

• Step through the door and lie in different positions. Can you fly?

• Observers can see you from the wooden stairs.

Please take off your shoes before entering.

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