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Cake day: July 10th, 2023

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  • cmhe@lemmy.worldtoScience Memes@mander.xyzpump up the jamz
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    17 hours ago

    Nothing gets burned or otherwise destroyed when receiving EM radiation via a dish and converted it into electricity via a receiver.

    Sure, the amplification stage of the process likely works only one way, and should be replaced in order to send something.

    The one way process of burning oil to generate heat seems much more primitive than the energy conversion offered by a diode, TBH.

    You can push or tow an electric car and charge their batteries. Because electric motors are also generators.

    Even with your simplistic fossil fuel car in your example the alternator within can also be used as a motor.



  • The best “server-side” anti cheat mechanisms online is streaming the game, and I am sure that eventually some talented developers are able to even write some aim bot (or more) for that.

    Competitive games need a fully controlled environment. Doing it online with random unknown people should not be taken as serious as they currently do.

    Alot about video games is not standardized. To be competitive all players should have the same hardware, internet connection, etc. So that it is actually individual skill that is measured, not just the size of players wallet.

    But even then, developing skill takes alot of practice and time, which also, in our current system, can be converted into money. There just is no fair competition here anyway. Still many people believe in meritocracies…



  • cmhe@lemmy.worldtoScience Memes@mander.xyzpump up the jamz
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    2 days ago

    There is no such big differences between a light emitting (LED) and a light receiving diode (photodiode), they are just the reverse of each other. In fact photodiodes can even emit light, but very inefficiently. Same in reverse, LEDs can also detect light, just badly.

    It seems like most efficient energy conversion methods can be used in both directions.


  • cmhe@lemmy.worldtoScience Memes@mander.xyzpump up the jamz
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    3 days ago

    These radio telescopes don’t transmit anything at all, they listen to radio waves coming from the cosmos. Much like a normal telescope doesn’t transmit light.

    If you invert the flow of the electrons, a receiver becomes a transmitter.

    Speakers can become bad microphones and vice versa. Pretty sure that a radio telescope is a very bad transmitter for human music, but it could be possible with some changes…



  • Which other trustworthy search engines are there? And I don’t mean some different frontend or a meta search engine like ddg, sp, kagi, searx(ng), etc… that mostly just use googles, bings or even yandex and beidu results?

    Ages ago I configured and hosted yacy for myself, but that was a different time… Are there any real alternatives? With mayor internet companies like cloudflare, social media sites and many others restricting the access to the net and information, searching becomes more and more impossible if you aren’t a huge corporation…


  • The problem is EAs business model for this game. It is free to pay, so EA need to extract money otherwise. They introduce some gamified resource collection and crafting with exponentially rising costs, etc. And hope that gamers circumvent that by buying stuff with real money. Now players don’t all want or can’t do that, and look for alternative solutions.

    So EAs business model drives people to cheat. To cheat them primarily and other players secondarily.

    And because of their business model, they cannot solve the cheating between players by giving them dedicated servers or just let them P2P match, because they would loose control over them and their ability to extract more money.



  • Together with secure boot and your own signing keys, it could be a good way to en/decrypt the a dm-verity secured read-only rootfs. But for the home partition I would probably still want to enter my own decryption key, maybe via systemd-homed. From there you can update the kernel/initramfs and read-only rootfs image and sign them for the next boot.

    This is complicated to set up. Otherwise maybe use TPM as a 2FA, so you still have to enter a pin?








  • The only way I ever used passkeys is with bitwarden, and there you are sharing them between all bitwarden clients.

    From my very limited experience, pass key allows to login faster and more reliable compared to letting bitwarden enter passwords and 2fa keys into the forms, but I still have the password and 2fa key stored in bitwarden as a backup in case passkey breaks.

    To me, hardware tokens or passkeys are not there to replace passwords, but to offer a faster and more convenient login alternative. I do not want to rely on specific hardware (hardware token, mobile phone, etc.), because those can get stolen or lost.



  • I am thinking of OpenMW for instance. Through reverse engineering, they where able to create an open source engine that runs the game with modern features. You still have to own those games in order to play the original levels/content.

    Sure for games, which are game mechanic driven there is difficulty in separating if from the content, but in many content heavy games, it is more about the world, explorations, the story, characters etc, than the just the runtime, rendering, physics etc.

    In many games the big chunks of the engine is sort of source available already, because they are written in a scripting or managed language (.Net or Java).

    Making the stuff that isn’t written in such a language available to the player as well, would be great. Because that would lessen the reverse engineering burden of modders. And the next step would be to open source parts of it.

    The reasons for this are the same for many commercial products to use open source lower levels of their software stack and open source their common code as well. Improving your own product by cooperating with others would be great in gaming as well.