A light tower is planned to replace the water fountain at Dong Kinh-Nghia Thuc Square in Hanoi. Photo: Pham Tuan / Tuoi Tre Hanoi has revealed a plan to develop a light tower at the center of Dong ...
Physicists have created the tiniest light-emitting diode (LED) displays ever 1. The image above was shown on a monochromatic display with pixels less than 100 micrometres across, about the width ...
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