Sign up for an Award
Participate with your entry in one of our professional or student awards.Sign up for an award
You are using an outdated browser. Please upgrade your browser to improve your experience.
The change in colors of the bottom of an umbrella
bucket can due to the draining rain. The color of
the bucket is dependent upon the amount of rain
This change in color could fulfill customers'
curiousity. Therefore, the chance that customers
scatter their umbrellas reduces.
Kai-Ting Yu, Chun-Wei Huang, Shu-Ting Chan