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Joined 1 year ago
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Cake day: August 15th, 2023

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  • Heat is electromagnetic radiation - photons, sound is mechanical displacement - phonons.

    They mostly propagate the same due to being waves, in most other respects they are very different.

    Heat convection is an entirely separate process where heat radiation is aided by the movement of the surrounding medium. Where it would otherwise heat up it’s environment, convection keeps the environment from heating up. Compare coffee in a thermos (very little convection) to a cup you’re blowing on (significant convection); more air movement - more cooling.

    Also, destructive interference does not at all work like that.

    Maybe a more useful analogy could be that waves have like walking animations, where in part of the animation they go up, and in another part they go down. Destructive interference happens when a wave in its’ “up” phase crosses a wave in it’s “down”, meaning the resulting movement looks like nothing. The waves don’t however interact in any way, and will continue on their way and on their own animation cycles.

    The shifting and heating parts are technically true but require very specific circumstances, enough so that I’m more prone to believe it’s another misunderstanding of the physics behind this. But I’ll give you the benefit of the doubt.









  • Lol. Check your privilege.

    A. Do a carbon footprint analysis of your life, if it’s above 2,5 tons coe/year you’re a net burden on the planet. My country is as well, although considerably lower than the US.

    B. It is possible for you to be a paragon of environmentalism and still live in a country with inefficient systems for water, infrastructure, zoning, industry and food production. Not to mention live in a culture of unsustainable lifestyle. Many Chinese or Indian persons are simply too poor to have a major impact on the environment, but their national industrial practices drive up the average pollution to levels comparable to the US (although still lower). Most US people aren’t as poor, and also have shitty industry standards, and also the means to change that without losing your standing internationally.

    C. Multiple countries are shitty, in fact most of the non-developing world countries are a net burden.

    D. As opposed to the other countries at the top, the US has had the economy, data, and access to resources to be able to something about it for generations, whereas most have had half the time and considerable need of modernising.

    E. The US is much larger than the other countries, and could with quite simple measures make great impact and help pressure other great polluters.



  • It’s always worthwhile to learn new things!

    And programming is a tool, so it’s typically made to be clear how to use it, although of course people will differ on what needs to be clarified the most.

    My experience is that there’s way too much discussion in what tool to pick, it doesn’t matter that much and almost all of the common languages will allow you to do all the things. And even though some will be better adapted for certain applications, it’s easy to pick up the new tool when relevant, and you’ll be that much ahead by being well versed in one.

    As for how to learn, I find that you kind of need to figure out the basic syntax in each language (loops, conditionals, output, memory management, typology, lists, function calling, maybe classes/libraries if you’re fancy), and then start doing projects.

    A nice intro for C# is the C# Player’s Guide by R B Whitaker, using some gamification and storytelling to get you through the basics, and even leave you prepared to tackle your first projects (by practicing design philosophy, how to break down projects, etc).

    Otherwise, Python is a lot of fun, it’s made to be very easy to jump into, and then it’s fully featured to do anything you’d like it to. Unfortunately all my resources for it are in my local language, but it has many many users so I’m sure there’s great resources to be found in your own language.