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The cap is equipped on the top of the posts in the playground equipment. The solar cell can store the suns energy and provides the light in the dark. The light can avoid dangers hidden in the dark and also shows the difference between day and night. Children are always curious about the light change. The cap not only lights up a safe environment but also delimits the area of playground. Parents can see well whether their children are playing in a safe area.
Axis of Time design group
Dora Kang, David Wang