• 4 Posts
  • 456 Comments
Joined 1 year ago
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Cake day: June 17th, 2023

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  • cynar@lemmy.worldtoSelfhosted@lemmy.worldServer for a boat
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    9 days ago

    Your best bet might be to use a laptop as the basis. They are already designed with power efficiency in mind, and you won’t need an external screen and keyboard for local problem solving.

    I would also consider having a raspberry pi 3 or similar as a companion. Services that must be up all the time run on the pi (e.g. network admin). The main computer only gets kicked out of sleep mode when required. The pi 3 needs less power than the newer pis, while still having enough computing power to not lag unless pushed hard.

    I definitely agree with SSDs. HDDs don’t do well when rotated when running. Boats are less than a stable platform.






  • cynar@lemmy.worldtoScience Memes@mander.xyzBLOOD IS BLOOD
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    13 days ago

    I have a relative who has an unfortunate condition that causes internal bleeding. They’ve had enough blood transfusions that their antibodies are completely haywire.

    Multiple times, doctors have not listened to their protests, and given them O-. They turn an impressive shade of yellow (among other, more serious, issues).

    Last I heard, there were 2 compatible donors known, 1 in a different country. Thankfully, you can store blood longer term. It’s just not cost efficient to do in bulk. They have their own little stockpile of blood at their local hospital (mostly self donated).


  • That method is still mostly recommended, though mostly for younger children/babies. The Heimlich maneuver is difficult to perform on a small body. You either over squeeze, and cause harm, or are too tentative, and so not helping.

    With babies, you hold them lying on your forearm, facing downwards, and slap (open handed) hard. I’ve only seen it used once, but it worked perfectly then.


  • cynar@lemmy.worldtohmmm@lemmy.worldHmmm
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    16 days ago

    Training, lots of training. It also applies to you as well!

    I think our dog got past 2 years old before we had eaten more pork chops than he had stolen.

    He’ll still swipe my daughter’s dinner, if it’s left unattended. At least he will no longer steal it while she’s sat in front of it.


  • There’s a story, though I’m not 100% sure on how true it was. Queen victoria did a royal visit to the new lab overseen by Michael Faraday. She asked him what use this new “electricity” was? His response was along the lines of "mam, we’re not completely sure, that’s why we are researching it.

    As for actual uses. It could give us the theoretical key to room temperature super conductors. It could give us a foundation for exotic space drives. It could help crack new forms of fusion reaction.

    Ultimately, it’s a foundational block. What gets built on there is hard to predict. By comparison, GPS is not an obvious extension of relativity. However, without an understanding of relativity, GPS would basically be useless. It would drift km/day


  • The limiting factor is the bend. The subatomic particles want to go in a straight line. A magnetic field is used to bend the beam around into a circle. The faster the particles are moving however, the more energy is needed to bend them. A larger circle has less bend. This lets you get your particles faster.

    Since E^2 = M^2 C^4 + P^2 C^2 (the full form is E=MC^2 ). If you can force the particle to stop rapidly, then you can force the energy from momentum into mass. This is done by hitting 2 beams into each other. The faster the beams, the more energy is available to convert to mass.

    Most of the time, this creates a lot of mundane particles. However, ever so often it creates something interesting. They rapidly decay into mundane particles, but the shower they create tells us a lot about them. The catch is that all the energy needs to be present at once. You can’t use more particles, you need to make them move faster.

    As for why. The more particles we have to study, the more we can figure out about the underlying rules. We have a number of theories. They all agree at lower energy levels, but disagree at higher energy levels. By knowing which is correct, we can pry deeper into the workings of reality.


  • In almost all cases the point is to keep things reversible. The problem is puberty. Once the hormone cascades hit, it’s far harder to transition. At the same time, fully transitioning is not something many children are equipped to cope with.

    Luckily there is a 3rd option. Puberty can be delayed without permanent issues. This gives the patient and doctors time to figure out what to do long term. If they were confused, they stop the drugs, and puberty happens normally. If they truly want to transition, they are in a far better position to change than if they experienced puberty as the “wrong” gender.

    By delaying the changes, it allows time for them to process what they want. It also lets them experience living as the other gender, in a reversible manner.







  • The fuse offers per device protection, as well as per room/area.

    E.g. you have a lamp that draws 1A. It’s cable is rated for 3A. It has a malfunction and starts drawing 10A. This won’t pop a breaker, but will overload the cable. Eventually it could catch fire from overheating. If it has a 3A slow blow fuse, it will kill the fuse before it kills the cable.

    It also helps to isolate problems rapidly to 1 device.