{"id":246,"date":"2020-09-05T21:35:00","date_gmt":"2020-09-05T19:35:00","guid":{"rendered":"https:\/\/jakob-volkmer.de\/?p=246"},"modified":"2024-02-22T21:11:04","modified_gmt":"2024-02-22T20:11:04","slug":"stadt_luft_anzeiger-home","status":"publish","type":"post","link":"https:\/\/jakob-volkmer.de\/en\/stadt_luft_anzeiger-home\/","title":{"rendered":"NO2<\/sub> - urban air indicator"},"content":{"rendered":"

A few years ago, a nitrogen dioxide display in the form of a social sculpture was installed in Wiesbaden. LED tubes hung from a huge tree directly in front of the main railway station, alerting citizens to the poisonous gas NO2<\/sub> in public. Like a traffic light, the \"city air indicator\" lit up red when the EU limit value of 40 micrograms per cubic metre of air was exceeded and green when the air was OK. This campaign was of course limited in time - but it was intended to be continued. This gave rise to the idea of designing a city air indicator for home use. An initial design in the form of a test tube had already been created for this purpose. My task was now to get this prototype to work or to reproduce it in small series. The idea behind it: Interested citizens and students should be able to build their own city air display and hang it on the windows of public buildings in the city centre, for example, to draw attention to the quality of the air.<\/p>\n\n\n