🎨☁️А сyanometer (5)

 ☁️This is a cyanometer - a tool for determining the blueness of the sky.

Initially used by scientists and later by artists.

A cyanometer (from Latin cianus “blue”) is a device designed to measure the color of a clear daytime sky and the degree of blueness of the sky. Later this device was used to determine the depth of the sea. A type of colorimeter. The cyanometer has a one-dimensional scale that allows you to measure colors within the sequence from white through white-blue to deep blue.

The first cyanometer was designed by Horace Benedict de Saussure at the end of the 18th century. It consisted of 53 strips of paper, painted with Prussian blue in various colors: from almost black through deep blue and then to light blue. Saussure measured the color of the sky in Geneva, Chamonix, and Mont Blanc.

Mount Mont Blanc (French: Mont Blanc, Italian: Monte Bianco)
Absolute height - 4805.59 m

Horace Benedict de Saussure (French: Horace-Bénédict de Saussure; 1740-1799) - Swiss geologist, botanist and mountaineer. Representative of the de Saussure scientific dynasty, son of Nicolas de Saussure.

Martin Britzel Baraga's monolithic sculpture measures the blue of the sky and changes color to match it.
Located in the center of Ljubljana in Slovenia, the monolithic structure combines art and science by measuring the blueness of the sky and looks stunning.

Baraga's cyanometer not only periodically takes pictures of the sky and evaluates them against a 53-hue color wheel mounted at the top of the monument, but also uses the data to simulate color, changing it to blend with the sky. Day or night, cloudy or clear, its reflective surface shines in different shades for passersby.

Like a traditional cyanometer, the sculpture, which is more than 3 meters tall, is also a scientific instrument. By measuring the blueness of the sky, it determines the air quality in the region, which is affected by the presence of moisture and particles in the atmosphere.

Cyanometer