This barometer is also known as oldest known barometer. Exactly how old it really is can not be determined with certainty. What is certain is that the Moors when they came to Spain in the year 711 AD and founded the caliphate of Cordoba,brought similiar barometers, known as thunder bottles, with them. Not suprising because they where the most successfull scientists at that time, while the rest of Europe barely reached the dark middle age.

Only in the year 1643 Toricelli, a gifted scholar of Galileo Gailei invented the mercury barometer, but to be honest these where not much more exact than the thunder bottle, mainly because it works on the same principle as the thunder bottle airpressure is applied to a liquid in a bottle and varies acording to air pressure. The word barometer has its origin in greek Baros  - weight and Metron - measure. This barometer can not show the exact scientific measures of air pressure but it is not only decorative it also reliably shows variances in air pressure. This thunder bottle was made popular again by the German poet, writer, scientist nad politician Goethe which experimenten amaongst other things with weather prediction and measurements.

How does it work?

Fill the bottle through the spout so the connection between the spout and th bottle body is covered. To read the air pressure the following applies. Good weather (high pressure) -  the water level in the spout sinks and rises in the bottle Bad weather (low pressure) - the water level in the spout rises and sinks in the bottle. This barometer is mouthblown and freeformed so each barometer is a unique work of art.

Slate is a commonly used buildingmaterial in the thuringian forest area and replaces normal shingles as ist has many good properties so this is good fitting for an original Goethe barometer.(Fastening materials not included)

Height: 24 cm