Marvin, the resident robot at Seattle's Intel Lab, now has a sensor to detect the electric field emitted by a standard AC power outlet. Marvin then takes a page from the 1960 short story Callihan and the Wheelies by Stephen Barr:
Amanda glared at the little object on wheels - it was about the size of a rollerskate and it seemed to be considering what to do next. It turned its photoelectric scanners this way and that, waving its jointed grappling arms about. Then it appeared to make up its mind, and trundled over to a wall socket in the baseboard, plugged itself in and proceeded to recharge itself.
(A self-charging robot)
Of course, little Roombas have been recharging themselves in special stands, but you've got to admire a robot that just uses an outlet like everyone else. Take a look at the video.
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Illustrating Classic Heinlein With AI
'Stasis, cold sleep, hibernation, hypothermia, reduced metabolism, call it what you will - the logistics-medicine research teams had found a way to stack people like cordwood and use them when needed.'
Deflector Plasma Screen For Drones ala Star Wars
'If the enemy persists in attacking or even intensifies their power, the density of the plasma in space will suddenly increase, causing it to reflect most of the incoming energy like a mirror.'