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Cake day: August 3rd, 2023

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  • If you throw gasoline out on to the pavement it will evaporate away. If you keep it in a gasoline can it will not. In a gasoline can the liquid and gas will reach equilibrium, though you’ll certainly have slightly less liquid than what you started with. If the can isn’t sealed then, yes, all the gasoline will eventually evaporate away - even at STP.

    And, again, this is all trivial to test at home by using some hand sanitizer. Another example is your skin does not remain wet with water forever, despite human skin temperature not being 100°C. It’s an everyday phenomena, I’m not sure what you’re trying to argue against here. It’s not my “line of thinking,” it’s objectively reality.

    As for your distillation problem, the issue isn’t that some alcohol remains in the water - it’s that some water evaporates alongside the alcohol during the distillation process at the boiling point of alcohol - due to, guess what, vapor pressure. That’s called an azeotrope - clicking through to that Wikipedia page might have helped.



  • it would not turn into a gas at normal conditions.

    It does: https://en.wikipedia.org/wiki/Vapor_pressure. In an airtight container you would have an equilibrium of alcohol vapor and liquid. In open-atmosphere, the atmosphere basically behaves like an infinitely large volume for the vapor - so the alcohol will completely vaporize (and cool the surface it is on in order to do so).

    It’s also trivial to demonstrate by pouring alcohol onto a surface, it disappears in seconds. Same with gasoline and numerous other liquids you’ve surely seen do this (another example is hand sanitizer, which is basically pure alcohol).

    Being diluted doesn’t really help with any of this though. Also alcohol is kept in bottles, which are usually airtight until they are first opened.



  • Don’t learn Docker, learn containers. Docker is merely one of the first runtimes, and a rather shit one at that (it’s a bunch of half-baked projects - container signing as one major example).

    Learn Kubernetes, k3s is probably a good place to start. Docker-compose is simply a proprietary and poorly designed version of it. If you know Kubernetes, you’ll quickly be able to pick up docker-compose if you ever need to.

    You can use buildah bud (part of the Podman ecosystem) to build containerfiles (exactly the same thing as dockerfiles without the trademark). Buildah can also be used without containerfiles (your containerfiles simply becomes a script in the language of your choice - e.g. bash), which is far more versatile. Speaking of Podman, if you want to keep things really simple you can manually create a bunch of containers in a pod and then ask Podman to create a set of systemd units for you. Podman supports nearly all of what docker does (with exception to docker’s bjorked signing) and has identical command line syntax. Podman can also host a docker-compatible socket if you need to use it with something that really wants docker.

    I’m personally a big fan of Podman, but I’m also a fan of anything that isn’t Docker: LXD is another popular runtime, and containerd is (IIRC) the runtime underpinning docker. There’s also firecracker or kubevirt, which go full circle and let you manage tiny VMs like containers.






  • excitingburp@lemmy.worldtoMemes@lemmy.mlEVs
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    1 year ago

    … so long as you’re not leasing them, the lifetime energy cost is night and day.

    The current rhetoric against EVs is reminiscent of the rhetoric against nuclear power. Yes, it’s not great. Yes, it’s not renewable. However, it gives us more time to more deeply address these issues. The successful anti-nuclear Green Peace campaigns against nuclear have done immeasurable damage to the environment in the long-term (I’m now convinced they were a big oil sock puppet all along). The same could be said for the anti-EV crowd, but the “EVs are sexy” campaign seems to be gaining more traction this time round.

    Make no mistake though, the “EVs are just as bad” is a myth perpetuated by big oil.

    If you can do a bike, then please do a bike (or a scooter, or one of the many options). If you can’t, then an EV is a good choice. If you can’t afford an EV. But never, ever, lease.