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dab7bd4515bc650c2e20b815c6d26c22 2022-04-14 13:33:14 :: https://www.engadget.com/thermophotovoltaic-cell-converts-40-percent-of-heat-energy-to-electricity-101051572.html?src=rss || Thermophotovoltaic cell converts 40 percent of heat energy to electricity | Engadget