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Cake day: June 7th, 2023

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  • Dimmers will typically use a triac which cuts up the sinusoidal waveform. It doesnt actually lower the amplitude per se, but it limits the fraction of the time the waveform is on. Kinda like this. This means that a lot of the time the led isnt gettingas much or any power. The average power will be lower, and if the LED driving circuitry isnt designed to compensate for this, the LED will flicker.

    Clarification on triacs: they get turned on a certain fraction of the way into the cycle. Triacs will stay on until the voltage across them is 0. Conveniently the zero-crossing of the AC wave (when the wall voltage crosses zero to start foing negative or from negative to positive) does just that.





  • Linux wont take off until the friction for new users is low enough that the layman can resolve issues without resorting to techniques outside of their understanding and patience. Even as someone who uses linux, there are a ton of things that should have a GUI / just be a context menu entry. If you can get the same amount of work done with a button click rather than typing out a complicated command line string, you might as well use the GUI, right click menu, etc. and make it easier for the typical person. People these days can barely use tablets, and those already dumb things down to icons you tap. Unfortunately, making it accessible to the lowest common denominator is what makes things popular a major factor in making things popular







  • Coal plant burns coal to heat water, makes steam, and the steam powers a turbine to produce electricity. A nuclear power plant uses nuclear fuel to heat water and produce steam similar to a coal plant. It may do this indirectly (e.g. second loop between the nuclear fuel and water loop to prevent the water becoming radioactive). This means that to build a nuclear plant you essentially need to build a coal plant, and then also the nuclear reactor and safety stuff, which makes them more expensive. Since coal plants are being turned off anyways, it might be more cost effective to just retrofit old coal plants so the only cost is the nuclear reactor side of things (plus any necessary maintenance and upgrades)


  • Also if you want a domain but dont care about the actual address, a .xyz domain composed entirely of numbers with less than 10 digits is $1-2 + same as renewal fee per year. $1.22 for me on porkbun

    Just be sure to redact the whois information bc you will get a call from scammers trying to get you to register your domain on some “internet map” for a small fee acting as if its some step in your setup process you havent done yet


  • jjagaimo@lemmy.catoComics@lemmy.mlTop Five
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    5 months ago

    Behavior is called mobbing

    Its not worth it for the predator animal to go after a bunch of smaller birds that are harassing it so they tend to leave. Its also done to steal the predators meal when they leave or to distract it while another bird steals its food. Also draws attention to them to prevent them going stealth, which can affect bjrds like owls, who tend to be victim to this type of attack from prey birds. This makes them leave because their main weapon is stealth and when their cover is blown, they will have a harder tome catching prey (including the mobbing birds’ babies)