This concept gadget from designer Jon Liow uses phosphorescent powder flask in a transparent and does not require any power. During the day, the device stores energy and then lights up to 6 hours.
Glow - Light without batteries
This concept gadget from designer Jon Liow uses phosphorescent powder flask in a transparent and does not require any power. During the day, the device stores energy and then lights up to 6 hours.
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