Traditional Culture Encyclopedia - Weather forecast - What is a weather forecast bottle stone?

What is a weather forecast bottle stone?

(Text/big face on the small chest) The full name of the gas cylinder is the weather forecast bottle, also known as the storm bottle, and the English name is StormGlass.

Inventors have different opinions. It is said that one of them is meteorologist robert fitzroy, who is the captain of the Beagle that Darwin traveled around the world. He mixed distilled water, camphor, ethanol, potassium nitrate and ammonium chloride into a solution and sealed it in a glass bottle. As the weather changes, the crystallization of the solution in the bottle will also change differently. Observing crystals can predict the weather.