A bright future

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Light-emitting diodes are outstanding performers. They have a long lifespan, use little energy and produce lots of light. In a few years, they might even compete with the incandescent bulb
En: Pictures of the future (nro. , Fall 2003), p. 38-41S.T.:H001 PIC PP3711
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Light-emitting diodes are outstanding performers. They have a long lifespan, use little energy and produce lots of light. In a few years, they might even compete with the incandescent bulb

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