The LED light bulb is more than ten times the efficiency of regular incandescent lighting, so it can save the world hundreds of billions of dollars in electricity costs. (Shuji Nakamura)

The LED light bulb is more than ten times the efficiency of regular incandescent lighting, so it can save the world hundreds of billions of dollars in electricity costs.

Shuji Nakamura

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bulb efficiency electricity incandescent led light lighting regular save ten times world costs

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