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Joined 2 years 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.









  • Thanks for linking!

    But lol, that is such an obviously biased report with vague eyebrow waving suggestions that immigrants are to blame for everything.

    None of the charts or trends they present are consistent in their effect, haven’t controlled for anything (the major point is lowered GDP per capita while immigration spiked five years ago, but the Brexit drop started well before then, and the exodus of specialist EU-migrants isn’t even mentioned), and don’t actually say anything except look at this red line next to a thing getting worse.

    CPS is why you should view every “Think tank” as a lobbyist organisation, and their materials as sales flyers…


  • Wow, this is a useless editorial.

    No link to the report, unclear if the report takes into account years since migration (it takes time to learn language, develop networks, and climb ladders), some indication that the trouble is that migrants end up in low paying jobs (which of course would decrease GDP), and no comment on the fairly obvious question on what the integration policy says about time frames.

    Also, it puts all of the post-Brexit decline at the door of the immigrants, which seems ridiculous.

    This reads like a hit piece from conservatives in preparation for election season.