====== Images for publicity and other purposes ======

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(mh) see also: http://scrying.org/doku.php?id=tempelhof:images

[all above images by Danja Vassiliev and Kathrin Guenter]

Kamera for thoughtography:

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thoughtographic exposure at //the castle of the teutonic knights//, torun poland

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thoughtographic exposure during a book reading:

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thoughtographic city: berlin

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all images by kathrin günter

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jk - brain_writing - for large file versions 

http://www.psychogeophysics.org/wiki/lib/exe/fetch.php?w=120&h=90&media=summit:dscf4710.jpg

http://www.psychogeophysics.org/wiki/lib/exe/fetch.php?w=120&h=90&media=summit:dscf4721.jpg

http://www.psychogeophysics.org/wiki/lib/exe/fetch.php?w=120&h=90&media=summit:dscf4733.jpg

**Camera obscura workshop:**

Camera obscura "model 1" made from extremely cheap materials: 
- lens from Chinese 1-euro shop
- disposable cardboard from supermarket wastebin
- glue
- ducktape.

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You can see that the projection gives a nice lomo effect. 

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I have "perfected" the design for easier construction. This is "model 2". 
Model 2 is simpler to construct, more solid and gives a better and bigger picture.
Now it is possible to draw the scene that you see on the transparent paper.
You can see my simple drawing in the lower left corner.

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At the workshop I will try to make Model 3 - which should be even easier to use for drawing, but more difficult to construct because it uses an extra mirror.

**Parabolic microphone workshop:**

We will experiment with an extremely simple parabolic microphone consisting of:
- an op-amp preamplifier kit - ready to be soldered
- a miniature microphone
- some wires and audio connector
- a 9v battery

I have ordered 6 kits. 
The umbrella we will have to find somewhere in a shop. I will bring only two umbrellas myself.

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Although it is just a preamplifier, the kit is powerful enough to drive headphones.
This contraption is sensitive enough to detect an audio source at the other side of the room that I cannot hear unaided.
I suspect that the frequency performance is poor, because a 1000Hz source is amplified less than an 500 HZ source.

**Observation workshop**

Just a few book sources for scientific enjoyment of the city:
- Lower left: the classic physics observation books of Marcel Minnaert
- Lower right: the classic nature observation books of Nico Tinbergen
- Upper right: the classic geology observation book of P. van der Lijn
- In between: some modern like minded observers and explorers:
- urban flora
- lichens
- clouds
- waves
- sun, moon + stars = classic navigation
- urban geology

Just a few sources for my talk + walk ...


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**Camera obscura workshop:**

Model three. A bit fidgety to construct but easier to use for drawing.
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