Invented in the 18th and 19th centuries, it was often considered the British captain, Darwin used it on his ship.Anne Mary Helmsstein considered the storm bottle according to the effect of atmospheric temperature and pressure on the working solubility, but she did not exactly determine what ingredients were causing the change.There are other scientists who argue that the bottle is sealed and can not effectively perceive the pressure and temperature, and then suspect the effectiveness of the weather forecast for the stormy bottle.The drip glass contains a liquid that is very strange for the object, repeating the various forms of crystallization, depending on the weather changes.According to the weather. You can enjoy the glass form of crystal in a variety of ways to change the state.When the weather changes, the crystal form changes the object.◆ The sealed glass container holds a mixture of distilled water, ethanol, and camphor that changes in appearance based on forthcoming weather conditions.Formed like feathers and snowflake shapes. ◆ While it can't ever be as accurate or reliable as a barometer or actual meteorological forecast, the patterns made are gorgeous and makes for a stunning decoration on any desk and dining table. ◆ Note : the Storm Glass may need one or two weeks for the crystal to stabilize and adapt to the environment. If you want to see the test result, can be placed in the refrigerator frozen half an hour to an hour, take a look at the change effect.