man made skies - Jochen Traar | Art Protects You

our climatic system.) At the same time one cannotescape from the visual quality of the sky, this giganticprojection dome with its (artificial) cloud formations.Photography, which also falls into a chemical-opticalcategory, is not only capable of effectively representingboth levels, the pragmatic and the aesthetic, but alsosuggests coincidences with the image itself.und nächster HaltHaltestelleBergen und Schnee.Seit Sommer 1940 hab ich einen Schweizer Paß1971 einen Wiener Meldezettel2001 ein Paßgesicht.Ich kann mich ausweisenund ausweinen auskennen aussprechenauseinanderziehen.The formation of vapor trails depends on certain flightand ambient parameters. Vapor trails arise when watervapor that is cooled sufficiently (at approx. 10 km altitude)and subjected to humidity from the exhaust particles ofan airplane condenses. The duration that vapor trailsremain visible in the sky depends on “the relative humidityof the ambient environment, the density or the diffusioncharacteristics of the atmosphere.” “If the vapor trails arein their liquid state, they tend to dissipate within secondsbecause the relative humidity in the upper troposphere isgenerally much lower than 100%. [...] In busy air routes