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A drone can lift itself only through the power of a solar panel
(thelemmy.club)
Some amazing engineer built a drone that can lift its own weight using only the electric power that it gets from an on-board solar panel and nothing else (no battery).
Video: I Built a Solar Powered Drone and it WORKS by Luke Maximo Bell
the thing is that the amount of power on that little patch of area is actually a lot; we just continue to underestimate it because it doesn't feel like much. i mean, we stand under direct sunlight all day long and never feel like a train hits us. however, the amount of energy in the sunlight is quite a lot, we're just very good at ignoring it.