1960
Nice work Mexico! (thelemmy.club)
submitted 2 months ago by to c/upliftingnews@lemmy.world
231 comments fedilink hide all child comments
 

More info: https://www.zmescience.com/science/news-science/mexico-is-officially-launching-universal-healthcare-this-week/

you are viewing a single comment's thread
view the rest of the comments
[–] 1 point 2 months ago* (3 children)

There is an on and an off state. Either the light is on or the light is off. That's how it translates into binary. Literally that's what binary data is: a single data-point is either on or off.

Not really. Yes, binary is on or off, but how the signal is read is it has a threshold for on/off. This is true for light, with fiber optics, and also electricity. The universe doesn't work on binary. We say "if the signal value is > X, do Y". Electrical engineering actually has to handle variability in the signal, while computer science just pretends it's actually binary.

Fiberoptics would technically work, but it's more material than you need because it would require running fiberoptic cables everywhere instead of just using hollow chromed tubes. Also, the quantity of light it can receive and transmit is limited to the thickness of the cable.

I'm not just making up hypotheticals. If your idea were better it would be used. Fiber optics to transfer light is actually a thing that's done. Here is a company selling that product, and there are many others, but I've also seen things about large structures using a custom solution too. It literally does work and is actually done in reality.

  • permalink
  • fedilink
  • source
  • parent
  • hideshow 3 child comments
    •
  • [–] 1 point 2 months ago (2 children)

    I see your dornob and raise you one solatube

    And yes, I know digital "on"/"off" isn't literally either 5V or 0V, it's really "high"/"low", but practically speaking that doesn't change anything about what I said and it's more cumbersome to use those terms in casual conversation because it assumes a knowledgeable audience. Either way, when the memory latches in the register, each bit is either on or it's off, and fiberoptics work the same as electrical in that sense. That level of complexity and precision is not needed for distributing daylight.

  • permalink
  • fedilink
  • source
  • parent
  • hideshow 2 child comments
    •
  • [–] 1 point 2 months ago (1 child)

    That level of complexity and precision is not needed for distributing daylight.

    But that's my point. The data thing isn't relevant. It's just transmitting light. The fact it can transmit data doesn't means that's what it's for. It just transmits light of any intensity.

    It's a lot easier to just run some cables than install specialty ducts though. It doesn't need as much space and you also don't need to worry about being in straight lines. You just run the cable wherever you want and the light ends up there. Fiber optic cables effectively are just tubes with mirrors, except they dynamically adjust to whatever shape they're in. If you've got a short path to the outside, sure, do the duct, although you might as well just do a window. If it's to the interior of a building, especially if it's already constructed, fiber optic cables are the only reasonable option.

  • permalink
  • fedilink
  • source
  • parent
  • hideshow 1 child comment
    •
  • [–] 1 point 2 months ago

    Fiberoptic cables are limited by the diameter of the cable. A mirrored duct can be as big as you need it to be. We're talking about enough light to brighten an entire room. A half-inch fiberoptic cable isn't going to do it.

    Solar tubes are very effective at bypassing attics. That's probably their main application, but if we're talking about constructing post-apocalyptic catacomb cities, where we already need some sort of central ventilation shaft and duct work, then it's not like we need to retrofit it to some structure that isn't designed for it...

  • permalink
  • fedilink
  • source
  • parent