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Worldbuilding

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    $\begingroup$ Could you generate enough power from the frequent movement of the eye in its socket? Similar to a self-winding watch? $\endgroup$ Commented Apr 16, 2019 at 10:53
  • $\begingroup$ @Robin Bennett it was the first idea that came to my mind. But I think that the muscles of the eye socket alone couldn't generate enough power for a photocamera to work properly. $\endgroup$ Commented Apr 16, 2019 at 15:57
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    $\begingroup$ The eye is making small but abrupt movements (saccades) all the time while you're looking at things. "Abrupt" means "rapid acceleration and deceleration", which means "easy to tap into with an inertial mass and coils". Not clear that that would be enough power, but as this is SF, low-power electronics don't require that much suspension of disbelief. (Shooting a damaging laser beam from the eye, on the other hand, is right out.) $\endgroup$ Commented Apr 16, 2019 at 17:40
  • $\begingroup$ I wanted to suggest something similar. One of the most active muscles in the human body is the eye. However, we can't really use the same muscle that we wanted to use to power, as power. How about rather using the other eye's movement as a power source? $\endgroup$ Commented Apr 18, 2019 at 11:59