Device generates light from the cold night sky

Tech Xplore ^ | 12 Sept 2019 | Cell Press

[ctdonath2]

Contrast: solar panels average (all factors considered) 10 watts per square meter.
And I’ve spent all summer struggling with running a laptop off a 1m^2 panel, as an experiment.

[TexasTransplant]

Nothing sucks worse than a cold tesla

[SunkenCiv]

Thanks fieldmarshaldj.

Raman and colleagues tested their low-cost thermoelectric generator on a rooftop in Stanford, California, under a clear December sky.

Best part is, the soup is shelf-stable.

[norwaypinesavage]

"25 milliwatts per second over one hour is what 90watt/hrs which will power a laptop"

Your math is way off. Even if the output stayed continuous for an hour at 25 milliwatts, the energy would be 0.025 Watt-hours, not 90. That wouldn't even keep the laptop LED lit.

Also, it must be kept in mind, that like solar panels, the device requires a clear sky to operate. It doesn't function if there are clouds.

[GOPJ]

Can't any imbalance searching for equilibrium be milked for energy?

[minnesota_bound]

You can use a potato to create electricity.

[DUMBGRUNT]

Yes, but pounding nails into potatoes ruins them for french fries!