airCHeck vs Cyanometer

*** airCHeck to know the current air quality all over Switzerland and Lichtenstein *** With airCHeck you can look up the current air quality in Switzerland an in the Principality of Liechtenstein. Maps and monitoring stations show it to you. In addition, airCHeck informs about the health effects and what one should be aware of in case of high air pollution. airCHeck • Informs about the current air quality at your location or in any other arbitrary site in Switzerland and Lichtenstein. • Shows the current air pollution index and fine particle, ozone and nitrogen dioxide concentrations. • Grants open access to the latest measurements of the cantonal monitoring stations and the national monitoring network. • Offers background information on formation and sources of the main air pollutants. • Tells about the health effects. • Gives some advice on how you can protect yourself in case of high air pollution.

The original cyanometer was invented by the Genevan physicist and Alpine explorer Horace-Bénédict de Saussure (* 17 February 1740 in Conches; † 22 January 1799) in 1789. It is an instrument for measuring 'blueness', specifically the colour intensity of blue sky. With the measurement it is possible to draw conclusions from the constitution of the atmosphere: the bluer the sky the less the water vapor. Saussures cyanometer consisted out of 53 parts of a circular ring ranging from white over different grades of blue to black (Saussure used Prussian blue). Saussure used his cyanometer for measurements in Geneva, Chamonix und on the Mont Blanc. Alexander von Humboldt used a cyanometer on his expedition to America (1799 - 1804). You can use our Cyanometer in three modes: The modern scale uses distinct grades of blue starting with clear white up to black. The Saussure scale shall give an idea about the colors from Saussures original cyanometer. With the user defined scale own scans of blue skies can be added to an own colored circular ring - an own cyanometer. Each scan is saved inside the app containing information about date, time and locality. So it is possible to compare scans of blue skies from different locations. Privacy notice: No data will be saved or processed outside the app.