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Cake day: June 14th, 2023

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  • Here’s the thing: if you change the thickness of the layer then the colour will change along with it, but the material is otherwise the same. This occurs because the layers produce a phenomenon known as thin film interference. So it’s not the material of the coating layer that produces the colour, it’s the interaction between two layers.

    Anyway, you can see all of the colours of a light’s spectrum through a prism but you wouldn’t say the prism itself is any of those colours. It’s transparent and refractive. That’s all we have here with the glasses: refraction and reflection, with interference of certain wavelengths due to the exact thickness of the layers.







  • How often do you use it, if not every day? Once a week? Once a month?

    I use my laptop every day so it makes sense that I don’t use the power button even though it’s right there. I also have a raspberry pi set up to run Retropie that I only turn on once or twice a year when I have an old friend in from out of town. In that case I use the power button every single time but I don’t mind that it’s kind of finicky (I have to turn on several other devices with it as well as a power strip to power them all) because I don’t use it that often.

    I could see the new Mac Mini being a bit annoying with its bottom side power button if you’re using it every other day. But honestly I would be more annoyed at the boot time taking 30s than the 2s it takes to reach under the case and power it up. If I had one I would probably just get the keyboard with built in power button and finger print reader though. I use the finger print reader on my laptop all the time because it unlocks my password manager.









  • chonglibloodsport@lemmy.worldtopics@lemmy.worldRebellious Act
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    18 days ago

    That was an example that doesn’t really depend on there being exactly 2 competitors. If there are 20 competitors and they’re all spending a lot of money on advertising then they’re all producing a net negative

    I mean there’s probably some small amount of money they could spend on advertising that would be a net positive because it would inform the public of the existence of their product. But beyond that, they’ve moved from informing the public into trying to convince the public to buy their product. There’s simply no limit to the amount of money you can spend trying to convince somebody to buy something and no limit your competitors can spend to convince them not to!


  • chonglibloodsport@lemmy.worldtopics@lemmy.worldRebellious Act
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    18 days ago

    Society does not benefit from advertising. Vast numbers of people hate it and try to block it as much as they can. Others fall victim to it and get manipulated into buying shit they don’t need.

    But overall, if 2 competitors are advertising against each other then it can turn into a destructive arms race. They each spend more and more on advertising just to keep taking consumers back and forth from each other! That’s a net negative for society!