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These outdoor heaters are stupid and a waste of electricity (lemmy.world)
submitted 7 months ago by to c/justpost@lemmy.world
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They are in front of the elevators at an outdoor multi story parking garage around my area. That's all I wanted to share, thanks.

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[โ€“] 17 points 7 months ago (6 children)

I bet we can take it even further. Switch it out for a phased array of infrared emitters that track and target people based on body temperature. Then it won't have to be on all the time and there's no way it could possibly go wrong.

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  • [โ€“] 2 points 7 months ago (1 child)

    Im wondering how large a phased array of infrared sources would be

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  • [โ€“] 1 point 7 months ago

    Given that they have to be a distance apart relative to the wavelength they're emitting, I'd guess about 10 times larger than a single emitter with the same output. However, because it's able to create beams with cross-sections similar to the profile of its targets, I'd argue it could just have a lower output and resolution with similar performance to a single emitter for half that. Those are wild guesses. Hopefully an engineer is lurking around here somewhere.

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