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How to get that old-fashioned light bulb glow without wasting so much energy

https://www.sciencemag.org/news/2016/01/how-get-old-fashioned-light-bulb-glow-without-wasting-so-much-energy

A nanophotonic comeback for incandescent bulbs?

Researchers combine the warm look of traditional light bulbs with 21st-century energy efficiency.

http://news.mit.edu/2016/nanophotonic-incandescent-light-bulbs-0111