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YSK: You can make supercapacitors out of cement, water and carbon black
  • Failed electrical engineering major here - it turned out I was built to be a scientist, not an engineer, but it took a year of EE classes to figure that out.

    Regarding energy storage, capacitors aren't much different than batteries, but they can charge/discharge faster, have lower energy density (units of stored energy per units mass), and self-discharge faster, hence why they aren't used in place of batteries. For something where weight and volume aren't an issue and with no need for long-term storage, like a solar-equipped house, a huge cap would be a great option. I'm trying to figure out how to build one of what's described it the article now.

    The rate at which a capacitor discharges varies just like a battery, proportional to the resistance of the circuit. The reason most folks associate capacitors with "shorted terminals go boom" is the maximum rate of discharge on a capacitor is much higher than a battery, plus some capacitors operate at a much higher voltage than is practical for a battery, increasing the likelihood of generating a small arc. Shorting the terminals with a conductor makes a low resistance circuit so it just dumps its charge, whereas a battery would max out at a much lower rate, typically making a toasty wire versus a vaporized or melted wire.

  • Pirates, everywhere pirates!
  • Or accessible at all!

  • Amazon Prime Day Sales Off 41% First Day, Brand Adviser Says
  • I'd punch the alleged deals into camelcamelcamel to find they'd been similar for years. I've even found prices that went up!

  • Sometimes you just get it wong
  • Edit: this picture is getting so much mileage this year.

  • When you're new to reddit and you say something wrong.
  • People are much nicer as a whole here. I was on Reddit for years and I started to dread seeing I had replies to my comments. I'm actually excited when I get responses here.

  • Can you guess, chat?
  • It helps a ton. Facial massage and neti pots help me survive the worst congestion.

  • What sort of grill needs a firmware update lol
  • Oh shit, I didn't know about ESPhome. There goes my free time!

  • July is disability pride month
  • No kidding. I have a disability and was fired back in January for it (investigation and lawsuit pending). There are so few jobs I can do and it really sucks.

  • Being carried like that is great
  • I can help. Hair dies after it grows out of the hair root, deep in the follicle. Cutting it won't change the rate of growth as there's no way for dead cells to signal that anything has changed.

    Periodic trims eliminate split ends, so the hair breaks less frequently. That's all it is.

  • What's the worst tasting meats you've had that aren't chicken, beef, pork, or lamb?
  • You're not supposed to chew them?! I love oysters but I chew them up.

  • Measles cases surge to record high since disease was declared eliminated in the US
  • If only science could provide an answer. It must be a witch!

  • 'Just in': Elon Musk officially launches new political party
  • I'm a secret leftist amongst a bunch of low information MAGA voters (the ones that voted for Trump more because they're stupid and easily duped than being giant racists) in a few different circles. All they know is I own guns and answer "oh fuck no" when asked if I'm a liberal, so they assume I'm a non-MAGA conservative*. Hehehe.

    Without exception, they adore Elno. They don't realize it but they're prosperity gospel types (because stupid), so they assume he must be a good and intelligent guy, otherwise Jebus wouldn't have made him successful.

    *Side note: I have one all hot and bothered about seizing the means of production, just using different terms.

  • Only 3%* of US AI users are willing to pay a penny for it
  • I'd amend that to already tiny intentional userbase. Google, Samsung, Microsoft, Apple, and others are gleefully shoving it down their users's throats, hoping they'll get hooked, so there's a massive userbase. I suspect this is exactly why only 3% are willing to pay - they're a portion of the tiny group who actually signed up.

  • What are your notable stories of selling or giving away things online?

    I just had three "very special" Craigslist experiences in a row and wondered what everyone else deals with when selling things online.

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    How I (barely) got through college

    cross-posted from: https://sub.wetshaving.social/post/2498731

    > Deadlines

    2
    Isopod Power!

    cross-posted from: https://mander.xyz/post/25795394

    > LIVE!

    5
    You must construct moar(ule) kittenz

    cross-posted from: https://slrpnk.net/post/17732397

    > Rule

    0
    Moderator rules rule

    Hey look, me again! Just like we need community rules, we also need moderator guidelines to set expectations for our behavior. As with community rules, we want everyone to weigh in on them since this is a community for all of us. Here's what we have, let us know what you think:

    Moderator Guidelines

    • Don't be mean to users. Be gentle or neutral.
    • When in doubt about whether or not a user is problematic, send them a DM if you have the time and energy.
    • Don't waste time debating/arguing with problematic users.
    • Assume the best, but don't tolerate sealioning/just asking questions/concern trolling.
    • Ask another mod to take over cases you struggle with, or when things get personal.
    • Ask the other mods for advice when things get complicated.
    • Don't perform too much moderation in the comments, except if you want a verdict to be public or to ask people to dial a convo down/stop. Single comment warnings are okay.
    • Send users concise DMs about verdicts about them, such as bans etc, except in cases where it is clear we don't want them at all, such as obvious transphobes. No need to notify someone they haven't been banned of course.
    • Some users are stupid and focus on pedantry and technicalities. If you struggle to deal with such users, send them to another mod.
    • Explain to a user why their behavior is problematic and how it is distressing others rather than engage with whatever they are saying. Ask them to avoid this in the future and send them packing if they do not comply.
    • First warn users, then temp ban them, then finally perma ban them when they break the rules or act inappropriately. Skip steps if necessary.
    • Use neutral statements like "this statement can be considered transphobic" rather than "you are being transphobic".
    • Remember you are a voluntary moderator. You don't get paid. Take a break when you need one. Perhaps ask another moderator to step in if necessary.
    34
    Community rules rule

    Hiiii everybody! We need rules to keep the place from going off the rails and your mod team would like you to give them a review and let us know what you think. We're going to implement them now as a temporary ruleset so I'll slap them into the sidebar shortly, then make amendments based on commentary. Here's what we've got:

    Community Rules

    • Be nice. Assume others have good intent (within reason).
    • Block or ignore posts, comments, and users that irritate you in some way rather than engaging. Report if they are actually breaking community rules.
    • Use content warnings and/or mark as NSFW when appropriate. Most posts with content warnings likely need to be marked NSFW.
    • Most 196 posts are memes, shitposts, cute images, or even just recent things that happened, etc. There is no real theme, but try to avoid posts that are very inflammatory, offensive, very low quality, or very "off topic".
    • Avoid AI generated content.
    • Avoid corpoposting.
    • Avoid misinformation.
    • Avoid incomprehensible posts.
    • No prejudice such as transphobia, racism, ableism, etc.
    • No threats or personal attacks.
    • No spam.
    • No tankie, nazi, or any other authoritarian behavior.
    • No genocide denial.
    35
    196ers - We need a banner and icon!

    Everyone, we need to spruce the place up, so we wanted to reach out to you all for submissions for the icon and banner. Here's the idea: submit icons and banners (SFW please). I'll leave this stickied for 72 hours, then we'll pick the most popular of each by upvotes.

    I couldn't find specs on icon dimensions, but it appears icons are square and tend to look best at least 256 x 256. Banners tend to be...rectangularish. Here are three banner examples: ( 1 ) ( 2 ) ( 3 )

    As always, let me know if you have questions.

    42
    Looks like we started a community! Now we need feedback and mods.

    I'm kinda regretting not naming it oneninesix, but here we are. I guess I love letters.

    To anyone wondering what's up, I did this on my phone while out in the "big city", so I'm still waiting to get home to do anything serious. I have a few suckers really nice people who volunteered for modding along with me. Anyone else who is interested, drop me a line. I'll be picking mods when I get home in a few hours. Sorry for the wait and I'll do my best to put out any fires in the meantime. I didn't think this would take off!

    For those wondering, here's my take on moderating the place.

    1. Moderation is to facilitate an experience for its users in line with the goals of the community and the instance. It's not to push a personal agenda, give you a bigger hammer in debates, set up a digital fiefdom, etc. You certainly can and should include your mod experience on your dating profile, though. Unilateral decisions are not cool except in a few situations, like if 100% of your userbase is usurped by literal Nazis.

    2. 196 exists to be a place where you post something (often but not always something goofy) when you visit. I know not everyone does and that's fine - I still love you. These things can't be offensive or hurtful, though, especially not intentionally so. Unintentional vs intentional I believe is a HUGE distinction and needs to be considered when moderating.

    3. LBJ LBZ exists as an inclusive, (relatively) judgment-free zone for gender-diverse folks. I intend for us to uphold that here. I say relatively judgment free because there will be people looking to start shit and mods and admins are going to have to judge their actions, but only their actions.

    If you wanna be my modder, you gotta get with my bullet points...or argue persuasively why I should amend them (but that part doesn't fit the tune).The three big things I'm looking for otherwise are diverse viewpoints, if you can remain reasonably impartial, and if you can say you're sorry. The last is huge for me. As a mod, you're going to mess up. I used to mod on Reddit and I certainly did! I find it's important for maintaining the community's respect to be able to admit when you made a bad call and what you'll do to avoid it in the future.

    @ada@lemmy.blahaj.zone, pointers would be welcome as I think you do a great job.

    Community feedback is encouraged and welcome, just be aware I'll be a little slow to respond for a bit.

    PS: wow, I really DO love letters!

    Edit: Corrected point three, damn autocorrect! Believe it or not, we're not an inclusive community in LBJ's corpse.

    Update 20/1/25: We're replete with mods for now! Thank you all who reached out. I'll start pulling these stickies as they get irrelevant, I'm just a full disclosure kind of person so I want people to know what is/has been going on.

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    Guess I'll Start Rule

    Starting with the time-honored tradition of copying a meme I just saw.

    I'll nuke this community if we get 196 back (edit: if the community agrees to nuking, fuck unilateral decisions)

    8
    Help me find a video on North Korea?

    Hi everyone, I know this isn't 100% on topic but this seemed like the closest fit. You all tend to be more generally knowledgeable than the average Lemming. Feel free to remove if it's too off topic.

    In the last few years, I watched what I believe was a YouTube video on South Korean misinformation about North Korea. It discussed defectors, the conditioning they receive after defecting, and celebrity defectors. I recall it also interviewed some North Koreans living in South Korea.

    Does anyone know the video I'm thinking of?

    5
    I found the Lemmy bar in Reykjavik, Iceland!

    I couldn't find a more appropriate place to post this. It's a bar in Reykjavik. Cool place, would recommend.

    33
    People who poop with the bathroom fan off

    Seriously people, use the fucking fan. It clears away odors and covers up the sounds of your dropping a deuce. If you want to stew in your shit smell and revel in the music of your magical poop plops, do so in the comfort of your own home. If you're a guest and the bathroom has a fan, turn it on. We don't want to share.

    27
    Right-to-Work Laws don't mean your employer can fire you at any time for any reason (US Law)

    >"I live in a right-to-work state, so my employer can shitcan me for any reason". > > -Linus K. Lemming

    Sorry friends, that's at-will employment, *and you still can't be terminated for any reasons that are protected by law, but we're not here to discuss that. Right-to-work laws mean one thing: that non-union employees cannot be required to contribute to the cost of union representation.

    The Taft-Hartley Act of 1947 prohibits "closed shops", where union membership is a condition of employment; however, union represented positions can still be required to contribute to the cost of that representation. Right-to-work laws prohibit that requirement, allowing employees in union represented positions who choose not to join the union to also choose whether or not they contribute to the union's costs, i.e., if they pay dues or not.

    I see this mistake frequently and thought folks might want to know the correct information so they don't unintentionally perpetuate it.

    Edit: updated to include link to info about at-will employment.

    25
    Halp! Calibrating touchscreen on Panasonic CF-30

    cross-posted from: https://lemmy.blahaj.zone/post/12310804

    > Halp! Calibrating touchscreen on Panasonic CF-30 > > Hey all! I've been having an issue I can't figure out. Suddenly, I realized I'm in the heart of Linux users! I can ask here! I'm a total noob, so please be gentle. > > I installed Xubuntu and got everything but the touchscreen working properly. The touchscreen works but the cursor is consistently off a bit, with the least error in the center of the screen and increasing as it moves to the sides. I've tried running xinput_calibrator but it doesn't help. I attempted to run libinput.calibrate-touchscreen but keep getting a "is a Wayland compositor running?" error message. > > Any suggestions?

    2
    Halp! Calibrating touchscreen on Panasonic CF-30

    Hey all! I've been having an issue I can't figure out. Suddenly, I realized I'm in the heart of Linux users! I can ask here! I'm a total noob, so please be gentle.

    I installed Xubuntu and got everything but the touchscreen working properly. The touchscreen works but the cursor is consistently off a bit, with the least error in the center of the screen and increasing as it moves to the sides. I've tried running xinput_calibrator but it doesn't help. I attempted to run libinput.calibrate-touchscreen but keep getting a "is a Wayland compositor running?" error message.

    Any suggestions?

    0
    SoleInvictus SoleInvictus @lemmy.blahaj.zone
    Posts 20
    Comments 1.5K
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