Goethebarometer mouth-blown from glass
Size information:
Color: Clear glass
Condition: New
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Goethebarometer rare weather station glass barometer decoration
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About the Goethe Barometer:
The Wetterglas or Goethe Barometer is probably the oldest barometer in the world. It is said that the Moors, who were very capable scientists, carried such barometers with them when they arrived in Spain around 700. Weather glasses have been made in the Netherlands since the beginning of the 17th century by a Mr. G. de Donckere, after whom they were called thunder bottles. They were used in seafaring for the early detection of weather changes. It is probably called the Goethe Barometer because one was found in Goethe's estate.
Principle:
The principle of the Goethe barometer is simple. Compare the air pressure acting on the thin opening of the beak with the air pressure inside the closed bottle. If the external air pressure falls when a low pressure area (usually associated with bad weather) comes, the internal pressure outweighs the external pressure and the liquid rises in the thin beak. If, on the other hand, the external air pressure increases when a high-pressure area that promises good weather approaches, the water in the beak decreases accordingly.