意外收获：冰挂儿 | Unexpected Luck: Icicles
Temperature was lower than 0 degree (celsius) in last weekend, kind of 1st time this winter, not big surprise anyway. It was just early November in Beijing, under zero temperature usually lasts just 1~2 hours before sunrise, plus we don’t have even one day rainy or snowy recently… But how this (check following pics) could be done?
After a quick investigation, some hints got – it could be several of circle sprinklers, in the park, were failed to be shutdown during previous midnight. Water was sprayed as liquid film over grass leaves or pine needles, which was easy to be iced up, then this happens layer by layer (water film), and make it looks mellow and full finally.
上周末气温好像跌破了0点，应该今冬第一次吧，虽说司空见惯，倒是暖气慢慢热了。十一月份的北京，0度以下的气温应该也就是日出前的1~2钟头，而且没雨没雪……可这玩意儿（下图）是咋来的？
周围溜达一圈儿，有点儿头绪了——应该是这周围有几个自动浇水的旋转喷头彻夜没关。后半夜气温骤降，这水喷到草叶或者松针上，形成一层水膜，这货迅速降温一下子就冻住了，然后接着一层又一层（毕竟旋转喷头是过个十几秒来喷一下，而不是一直冲水），结果最后就弄成圆滚滚的这货了。不知道推理的是不是靠谱……
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