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In recent years, acid rain pollution become more and more serious. Although we all know the dangers of acid rain, we hardly notice that acid rain has already penetrated into our lives. "ZU" is a umbrella has Diethyl ether covering on the surface. When the acid rain comes to the surface of the umbrella, the surface will turn red to warn people the surrounding environment has been polluted and we are paying for that.
Different levels of red on umbrellas surface stand for the level of acid rain. Deeper red on the umbrellas surface stand for smaller PH value.
Hongfan Zhou,Penghao Shan,Yulong Zhao,Junwei Zhao,Chenfei Ye,Hao Zhou,Xinying Wang,Yue Zhao