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Joined 1 year ago
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Cake day: June 17th, 2023

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  • I work with radio camera links. The number of people who get upset over the receivers is depressing. They can make the 5G conspiracy theorists look educated.

    Receive equipment is incapable of radiating at all.

    The part that radiates is completely safe!

    Seriously, any danger would be at the camera end. I am happy to sit with it fully powered and the antenna between my legs. (It stops the camera getting knocked over). It can’t put out enough power to do any harm. It’s comparable to home WiFi and weak compared to the mobile phone you are happy to put to your head!


  • In short, no.

    The water needs to he hot enough to extract the optimal flavour from the tea fast enough. If you leave it longer, the bitter, oil based flavours start to come out excessively.

    This was actually a noted problem for Victorian (British) explorers. They couldn’t brew a proper cup of (black) tea up a mountain! I believe there were also patents issued, at the time, for tea brewing pressure vessels!

    Basically, you want the water as hot as possible, but not so hot it scolds the leaf. Black tea doesn’t scold (at normal water temperatures), so is brewed at 95°C+. Green tea scolds at around 80, so needs cooler water. White tea is even lower, again. By around 60°C your into stewing temperatures. You’ll get a lot more oils compared to flavour. You want to have your tea leaves out by this point.

    You also want to avoid agitating the leaves. Stiring, or squeezing the leaves tends to ruin the flavour. You know you’ve completely F’ed up a cup of tea if it has an oily scum floating on the top.




  • cynar@lemmy.worldtoSelfhosted@lemmy.worldServer for a boat
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    5 months 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.


  • In short, Facebook are incentivised to increase conflict and hate, it improves user engagement. They have also leveraged their large user base to boost numbers in threads significantly. Threads is already a cess pip of bigotry and hate.

    Federating with them would be like connecting your house’s drinking water pipe with the sewage pipe of an industrial pig farm. It would pollute our community to the point of destruction.

    They might try and control this initially. Unfortunately, it would almost certainly be part of an embrace, extend, extinguish attempt. ( https://en.m.wikipedia.org/wiki/Embrace,_extend,_and_extinguish ). They play nice till they have control of enough communities, then they stop the controls, to increase profits.


  • One of Sir Issac Newton’s famous phrases is

    “If I have seen further it is by standing on the shoulders of Giants”

    This sounds very nobal and humbling. However, its meaning totally changes with a few facts. It was written in an open letter to Robert Hooke. Hooke was apparently quite short, and EXTREMELY sensitive about this. Newton was basically dissing Hooke. Nobody will be standing on your shoulders, shortie!






  • Life will almost certainly be fairly common, given the right conditions. On earth, it seems to have appeared not long after conditions made it possible. We either won the lottery on the first week, or the odds aren’t actually that bad.

    The problem is, we can’t detect life right now. We can only see potential communicating civilisations. These are a lot rarer. We currently know of 1, humanity. That will change in the next few years. We have telescopes being designed/built capable of detecting the gasses in the atmosphere of an earth sized planet. While we won’t recognise all life types this way, a lot will show up in abnormal gasses, e.g. free oxygen. This should help bound the possibilities a lot.


  • Even more so, the moon is slowly moving away from the earth. A couple of million years ago, it would have completely covered the sun. In a couple of million years, it will not fully cover the disc.

    A million years is a long time for humanity, but a blink on the timescale of moons and stars. We didn’t just luck out with the moon’s large size, but also with the timing of our evolution.


  • I don’t think there is a single filter. My personal gut feeling however is that the jump to “specialised generalists” would be a major hurdle.

    Early human civilizations are very prone to collapsing. A few bad years of rain, or an unexpected change of temperature would effectively destroy them. Making the jump from nomadic tribal to a civilisation capable of supporting the specialists needed for technology is apparently extremely fragile.

    Earth also has an interesting curiosity. Our moon is extremely large, compared to earth. It also acts as a gyroscopic stabiliser. This keeps the earth from wobbling on its axis. Such a wobble would be devastating for a civilisation making the jump to technological. Even on earth, we are in a period of abnormal stability.

    I suspect a good number of civilizations bottleneck at this jump. They might be capable of making the shift, but get knocked back down each time it starts to happen.