The most mathematically efficient solar cooker designs

https://techxplore.com/news/2022-07-mathematically-efficient-solar-cooker.html

"energy collection but assessed actual cooking times of various food items to get a practical idea of the best type of solar cooker to recommend. The first modern solar cooker was invented... was able to achieve a cooking temperature of 88 degrees Celsius with his cooker. Modern solar cookers which utilize a highly reflective surface with a geometry that focuses sunlight on to a support for a cooking vessel have been shown to achieve temperatures of well over 300 degrees Celsius"

Related: Efficient single-winged aerial robots with reduced energy consumption

https://techxplore.com/news/2023-08-efficient-single-winged-aerial-robots-energy.html