• 0 Posts
  • 22 Comments
Joined 1 year ago
cake
Cake day: July 17th, 2023

help-circle


  • Omgpwnies@lemmy.worldtoLemmy Shitpost@lemmy.worldCords
    link
    fedilink
    English
    arrow-up
    1
    ·
    12 days ago

    In household wiring polarity does matter, especially if you are assembling plugs. Only one of the three wires is carrying live current (hot), the other two are the neutral return path, and ground which is for safety. If you accidentally switch polarity, you can cross hot to neutral and cause a short circuit.



  • The “intuitiveness” of imperial measurements is that they’re sorta human-scaled, at least for human-sized measurements. An inch is about the same length as the tip of my thumb, a foot is about as big as my foot, a yard is a single pace if I stretch a bit, etc. which makes it easier for a person to picture it.

    Once you get out of that scale it really starts to break down though.


  • The really neat thing about those changes to the meter is that it didn’t really change how long a meter was (-ish), it changed the precision of that definition, as well as the ability to reproduce an exact meter, reducing the need for a specific piece of material to define the meter (which changes length based on environment). Now, an exact standard meter can be reproduced independently in any lab with the proper equipment.







  • Yes, your total energy consumption drops, but your electricity consumption rises as a result. Electrification of stuff that relied on burning fossil fuels means that electricity consumption goes up even while total energy consumption stays the same or drops. I’m not necessarily saying that nuclear is the solution, but it’s a solution that can at least buy us a few decades for renewables and energy storage to catch up to demand.




  • Hard rationing of greenhouse gas emissions

    You’re more or less describing cap-and-trade, where corporations have a limit of carbon emissions as ‘credits’ which can be traded on a market. So a company that doesn’t produce as much emissions can sell their surplus credits to another company, so the market as a whole doesn’t exceed a set amount of CO2 emissions. As it stands, in this or other carbon tax based systems, people pay for emissions in the form of sales tax on CO2 producing products.

    wolves

    I’d imagine they’d just leave again eventually. If suburbia was an advantageous place for them, they’d already be there.

    Nuclear power plants within or adjacent to urban centers, especially in colder climate regions.

    Nuclear plants are somewhat geographically restricted to needing to be close to a suitable water source, there’s plenty that are next to or inside metropolitan areas. That being said, high voltage transmission means that a plant can still be a few tens of kms outside of a city before transmission losses start to add up. Also, small-scare reactors have been under development for use in remote communities.

    Gray water recovery built into homes and municipal water systems.

    Any sort of dirty water recovery is more efficient at the municipal scale, and plenty of towns are already doing that.

    Urine collection programs for phosphate recovery.

    Seems that’s not a super easy thing to do (read expensive), but there’s research being done… also apparently, a good portion of it in wastewater is from laundry soap… but as in the above, more efficient to just collect all wastewater and process it on a large scale.