Cyanometer
Cianómetro
- Date
- c. 1787-1789 · confidence medium
- Place
- Geneva, Geneva, Switzerland
- Credited to
- Horace Bénédict de Saussure y Alexander von Humboldt
- Field
- Knowledge & symbols
What it is
Instrument made of a graded series of blue tones used to measure the intensity of the sky's color by visual comparison, invented by Saussure and later used by Humboldt on his expeditions; a pioneer of quantitative measurement in meteorology.
What it led to
- modern quantitative meteorology
- studies of atmospheric composition
- optical measuring instruments
- Humboldt's scientific expeditions