• 8 Posts
  • 532 Comments
Joined 1 year ago
cake
Cake day: June 12th, 2023

help-circle
  • Led lights need constant current with a limit on the max output power. Chargers output a constant voltage. Too high of a voltage can be damaging to leds and if they get too much current they burn out quickly. So there is a difference between for example a phone charger and a proper led power supply. Also modern phone chargers communicate with the phone to deliver the right amount of power and often will fall back to a very low amount when a “dumb” device is connected.

    That said, the led light might have a power supply or power converter builtin. In that case you can supply just about anything with enough power into the input and it will be fine.

    If the light wasn’t expensive and a random charger works, just connect a random charger. It probably isn’t worth looking for the perfect power supply.







  • I hope this is the case, but I don’t really think so. I got a call Thursday from a friend and he told me he and his whole department were losing their jobs. He was pretty upset about it. Apparently management decided they could be replaced with AI.

    He and his team manage a medium sized in-house developed management application. It’s a combination of stock management, product management and sales tools. Because the products their company sells are pretty unique, they never found a good off the shelf application to do everything they wanted. So they developed their own and connected it to the off the shelf applications they have for ERP and CRM. Pretty slick and his team and him are praised across the company.

    Apparently the IT manager had gotten a very impressive demo for Microsoft Power BI with AI integration. Using AI tools to realtime develop an application. He was so impressed he decided they were going to fire the in-house team and have an external company use the AI to develop a replacement tool. The external company said they could use very cheap people as the AI would do basically all the work. And it would be done before the notice on the current team ran out (2 months).

    He called me kinda in shock about the whole thing. Like that’s not realistic right? That’s not something Power BI can do? With or without AI? And even with AI it can’t do that on such short notice? I told him he was right, that’s not how anything works and the IT manager got duped. Either way, they are out on their ass. Now they are very skilled people and will probably find new jobs right away, but it still sucks ass. AI sucks!


  • The word die can mean end of life, but has an alternative regular meaning: stopped working.

    We use it all the time, for example “I don’t know what happened, I was driving along and the engine just died.” “Due to bad weather my power died.” “I wanted to game, but my controller died.”

    Words can have different meaning and the verb die has a lot of meanings. And there is also a noun die, which is also in common use.

    died; dying ˈdī-iŋ

    intransitive verb

    1: to pass from physical life : EXPIRE died at the age of 56 die young died from his injuries a dying tree

    2a: to pass out of existence : CEASE their anger died at these words

    2b: to disappear or subside gradually often used with away, down, or out the storm died down

    3a: SINK, LANGUISH dying from fatigue

    3b: to long keenly or desperately dying to go

    3c: to be overwhelmed by emotion die of embarrassment

    4a: to cease functioning : STOP the motor died

    4b: to end in failure the bill died in committee

    5: to become indifferent die to worldly things




  • When they got swept away by the water with their bikes, the movie switches to a montage of them getting the bikes transported to their garage. There they tear down the bikes, replace damage parts, do paint jobs. With a full 10 minute part about how they troubleshooted a misfiring issue on one of the bikes and the full rebuild of a carburateur. There’s even a human interest part where they argue over replacing a part, some of them want to replace the part, others want to attempt a repair. Till one of the wraiths shares a story about how they were a kid working on old bikes with their dad and his dad never believed in throwing parts out, he could always repair it. So they contact a necromancer, which revives the dad for him to fix the part with his dad. And then the movie resumes like normal.


  • For these women, the liberty of privacy means that they alone should choose whether they serve as human incubators for the five months leading up to viability. It is not for a legislator, a judge, or a Commander from The Handmaid’s Tale to tell these women what to do with their bodies during this period when the fetus cannot survive outside the womb any more so than society could – or should – force them to serve as a human tissue bank or to give up a kidney for the benefit of another. Considering the compelling record evidence about the physical, mental, and emotional impact of unwanted pregnancies on the women who are forced by law to carry them to term (as well as on their other living children), the Court finds that, until the pregnancy is viable, a woman’s right to make decisions about her body and her health remains private and protected, i.e., remains her business and her business alone. When someone other than the pregnant woman is able to sustain the fetus, then – and only then – should those other voices have a say in the discussion about the decisions the pregnant woman makes concerning her body and what is growing within it







  • That’s kinda the same thing tho. The entire scale gets moved up, because there is more energy available in the atmosphere and water to form and power storms. So when all the storms get more powerful, you get more hurricanes, because in the past those would not have grown big enough to be classified as such. Small local storms can more easily grow to become larger, having a bigger impact. And wind patterns can change as well, so it’s very complex and hard to predict. The one thing we know for sure: it’s bad news.


  • Thorry84@feddit.nltoLemmy Shitpost@lemmy.worldInstallation
    link
    fedilink
    arrow-up
    10
    ·
    edit-2
    12 days ago

    Thanks for the clarification, pipes look like copper but might be cast iron.

    Still doesn’t fit with the explanation, aluminum has more resistance than copper, but not that much more. The resistance of cast iron is an order of magnitude higher than aluminum. So it would still be the lowest resistance in the circuit and thus the coolest part.

    And cast iron is pretty good at conducting heat. Not as good as copper or aluminum, but still pretty good. We’ve been using the material to make pans and pots for cooking because of it’s thermal properties. So the heat wouldn’t just stop at the fitting, but continue on at least some ways.

    Moreover it’s physically impossible to get aluminum hot enough to glow like this and still keep its shape. It melts at 600 degrees C, well below the point where something gets red hot, let alone yellow like this. If the aluminum were to be this hot, it would be in a puddle and at risk of burning.


  • Thorry84@feddit.nltoLemmy Shitpost@lemmy.worldInstallation
    link
    fedilink
    arrow-up
    40
    arrow-down
    8
    ·
    edit-2
    12 days ago

    This makes no sense at all.

    Why would only these two specific pipes get hot, so hot to glow, but not the other lines connected to it? And not the fittings around it? It’s all copper, so even if the power itself doesn’t heat them up, why would being connected to an extremely hot pipe heat it up. Since it’s you know copper and being good at transferring heat is what it’s known for.

    And why would the lower resistance part be the part that get hottest? Low resistance means less loss, so those parts would in fact be the coldest of all.

    Plus thin walled copper pipes can’t get so hot they glow without melting or at the very least lose all structural integrity and break.

    And a downed power line with a short to ground would almost immediately turn off. It’s when there isn’t a direct line to ground those things are dangerous. As soon as it shorts, it gets turned off at the source to prevent further damage, fire and not cause issues upstream.

    Either it’s Photoshop or someone has wrapped led lighting around some pipes.