We've classified "heat" as waste energy since the invention…

Twetch · January 19, 2020

We've classified "heat" as waste energy since the invention of fire.

But now we can turn heat into light, and back into electricity. 🔥💡⚡

https://www.sciencealert.com/device-that-channels-heat-into-light-could-boost-solar-efficiency-to-80-percent/amp