CFL and LED bulbs are light years ahead of incandescents in the energy efficiency arena. But attractiveness? In most cases, incandescents still win. LEDs are more pleasant than CFLs, but as Yumi Kori, ...
Colourful LEDs made from a material known as perovskite could lead to LED displays which are both cheaper and easier to manufacture in future. A hybrid form of perovskite -- the same type of material ...
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