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Joined 10 months ago
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Cake day: September 14th, 2024

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  • If you take 100 joules of electrical or chemical energy, and then direct them to a heater in a house, it’ll create about 100 joules of heat. That’s 100% efficiency.

    But if you use the 100 joules of energy to run a heat pump, it might bring in 300 joules of heat into the house. That’s 300% efficiency, when measured locally at the place you actually care about (inside the house). Zoom out and laws of thermodynamics still make it impossible to create more energy than was put in, but if you look at just the part you care about, it’s possible locally.




  • Yes, but that’s why heat pumps in this country are typically paired with auxiliary electric heat.

    Yes, and although it’s not very efficient to have auxiliary electrical heat, that’s a small percent of the overall year.

    If you live in a home that hits -20C for 20 days per year, that’s really cold! But you’ll probably need the heater on for about 180 days per year at that point. Putting up with less efficiency for 20-30 days per year is still a net gain if the other 150 days of heating makes up for it.




  • It can basically move a blade along an electronically controlled path, so it can cut intricate shapes.

    It can also use a pen or marker attachment to draw on paper, so that you can have things that look like handwritten script. So for example, if you want to send out a bunch of wedding invitations and you want to make “hand written” addresses on the envelopes, you can use certain script fonts with your existing address book, or even try to design a custom font from your own writing, and use that as a mass produced “writing” tool. There are a bunch of ways to make drawings and things like that, too.


  • Why the focus on white people? What are non-black, non-white people supposed to take away from this?

    And if we’re just picking up language from others around us, we can acknowledge that pretty much every word, every phrase, every syntactical or grammatical construct we use, we learned by observing others. And we don’t always have the ability to specifically attribute sources for where we learned what, so trying to gatekeep who can and can’t use particular phrases or words is going to be prone to errors. And ultimately futile.

    thinking they are entitled to everything

    This is a FOSS-focused community. The core idea here is that publishing and sharing ideas releases it out to the world, where the creator no longer controls who may use it, or how they may use it.

    That’s why your position on who can or can’t use certain types of language seems so foreign. It’s directly contradicting some of the core values that this community is organized around.