Sell online "weather bottle" is the ornaments: very unreliable weather forecast bottle, weather forecast-IT information
In the e-commerce platform, one called "weather bottle" commodity is very hot, it is said that he can forecast the weather, even netizens think it is better than the weather forecast. Really is it? Legal evening news reporter bought weather bottle connected to purchase materials for DIY weather bottle, seems not so seriously. Reporters observed found on November 29, in sleet, December 1, December 11 haze and sunny weather conditions, weather 5 bottles (one is December 10) Crystal did not change significantly.
December 11 an experimental, reporters bottles placed at 40 ° c hot weather respectively on the window sill and 15 ℃, found at higher temperature, less crystal clear. When the temperature is low, weather crystals within the bottle up.
Day for smog, weather 6 sample bottles, mostly small Crystal, only 2nd and 3rd samples, slightly larger Crystal, snow-like. 6 bottles of Crystal weather.
Found through experiments, even changes in temperature, the temperature and the time are exactly the same, weather bottles of crystalline forms are not the same. It shows weather bottle Crystal change, and does not predict the weather.
In this regard, the legal evening news reporter, Beijing 101 middle school chemistry teacher June-Hua Zhang. She said that by looking at the weather forecast weather and dress bottle does not mark.
Climate change under the influence of temperature, humidity and air pressure. Weather bottle is sealed, under the influence of outside temperature and pressure is not so, dissolve Crystal precipitation temperature. "Net Crystal shape and weather-related, in fact misinformation. Crystallization temperature changes. Morphology is also affected by outside influences, such as move, Crystal may become smaller, may show particles to settle. ”
"Most families now have heating, temperatures varied, so it is unlikely that crystallization of the bottle changes in the weather. If the temperature changes, Crystal will change. But the speed of temperature change will affect the crystallization. Such as rapid cooling and slow cooling, crystallization is not the same. Standing and shaking the bottle when crystals are not the same. Different weather bottle concentration differences, crystals are not the same. So says weather bottle does not predict the weather, can be used as an ornament, ornaments. "June-Hua Zhang said.
Weather in 40 ℃-50 ℃ hot water bottle, let stand for 3 minutes, find 5 samples less crystalline, to clarify the new 2nd sample solution
Weather bottle on the window sill of the rest for 1 hour, more crystalline, new 2nd sample appears half a small Crystal
Window stand two hours later (window temperature 14 deg 15 deg c), the weather almost crystallized is filled with bottles, 4th, and 5th in the sample, there are snowflake Crystal
December 13, at 5 o'clock, put on the windowsill for 4th sample appears suspended crystals, other bottles with no apparent change in the weather.
网上出售的“天气瓶”就是摆件：预测极不靠谱 - 天气瓶,天气预报 - IT资讯
目前在电商平台上，一款名为“天气瓶”的小商品非常火爆，据说他能预报天气，甚至有网友认为它比天气预报还准。事实真的是这样吗？法制晚报记者网购了天气瓶，并网购材料DIY了天气瓶，发现似乎不是那么回事儿。记者连续观察发现，在11月29日雨夹雪天气、12月1日晴、12月11日霾的天气情况下，5个天气瓶（其中一个是12月10日所制）的结晶没有明显变化。
12月11日的实验，记者分别把天气瓶放置在40℃的热水中和置于15℃的开窗的窗台上，发现温度高时，结晶明显变少。温度低时，天气瓶内的结晶多了起来。
当日为雾霾天气，6个样品的天气瓶中，大多是细小的结晶，只有2号和3号样品的结晶略大，为雪花状。但6个天气瓶的结晶不一。
通过实验发现，即使温度、温度变化和静置时间等完全相同，天气瓶的结晶形态也不一样。这说明天气瓶的结晶变化，并不能预报天气。
对此，《法制晚报》记者采访了北京市一零一中学的化学老师张俊华。她表示，通过观察天气瓶预测天气和穿衣不靠谱。
天气变化受温度、湿度及气压等影响。天气瓶是密闭的，受外界温度压强影响不大，所以，结晶溶解析出只受温度影响。“网传晶体形状和天气变化有关，其实是误传。结晶受温度影响而变化。结晶形态也受外界影响，比如晃动后，晶体可能就变小了，可能呈现出颗粒状沉淀下来。”
“现在大多数家庭有暖气，气温变化不大，所以天气瓶的结晶变化也不大。如果温度有变化，结晶会改变。但温度变化速度会影响结晶。比如快速降温和缓慢降温，结晶就不一样。静置时和晃动瓶子晶体也不一样。不同的天气瓶，溶液浓度有差别，结晶也不一样。所以说天气瓶不能预报天气，可以当个装饰品、摆件。”张俊华说。
将天气瓶置于40℃-50℃的热水中，静置3分钟拿出，发现5个样品结晶变少，新做的2号样品为澄清溶液
将天气瓶放在开窗的窗台上静置1个小时，结晶均变多，新做的2号样品出现一半细小结晶
开窗静置两小时后（窗台温度14℃-15℃），天气瓶内几乎被结晶充满，其中4号和5号样品中，有雪花状结晶
12月13日5时，放在窗台上的4号样品出现悬浮状结晶，其他天气瓶没有明显变化。