The crystals change with the weather: A mountain hut storm glass shrouded in morning mist. Depending on the day's weather, the mountain hut might appear clear, or shrouded in morning mist. This storm glass makes it fun to check in the morning. A storm glass is a weather forecasting tool used by sailors in 19th-century Europe to predict the weather. Storm glasses, which change their appearance depending on the weather, are popular as stylish interior objects. Inside the glass is a liquid in which chemicals such as camphor, potassium nitrate, and ethanol are dissolved, but the detailed relationship between crystallization and the weather is still not fully understood. Although it has not been scientifically clarified, the appearance of the liquid inside the glass changes daily depending on the temperature and humidity. Weather forecasts are possible, such as "clear" when the crystals settle at the bottom and the liquid is clear, "rain" when small crystals are floating, "snow" when the entire glass turns white, and "storm" when the crystals are coarse and do not become transparent. (※The appearance of the crystals is only a guide. In reality, there are individual differences depending on the installation location and other detailed conditions.) A spherical storm glass with a transparent house object inside. - Shape: Spherical storm glass - Interior design: Transparent house object - Internal snow: White, snow-like crystals - Crystal shape: Delicate, feathery crystals Thank you for viewing.