• 2 Posts
  • 191 Comments
Joined 11 months ago
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Cake day: December 5th, 2023

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  • Debian and Fedora have ports, though not all packages are available, and you’ll probably be doing a lot of porting if you want anything else.

    But this bit from the uConsole R-01 product page might be relevant to you:

    uConsole R-01 is a highly experimental model and requires some experience with Linux systems & FOSS. We strongly recommend all beginners choose other models.


  • A lot of this stems from instances running old versions with loose registration requirements, like no captcha. This is a problem in a federated system because there’s no barrier for a banned user to just jump to another instance.

    Perhaps it would be a good idea if, when Lemmy has anti-spam measures implemented like rate-limiting and captchas for registration, it disabled federation with instances that are at a lower version, to motivate small instances to upgrade and enable the new features.






  • tl;dr:

    The research was initiated after scientists on the research team reported seeing occasional flashes of green light while working with an infrared laser. Unlike the laser pointers used in lecture halls or as toys, the powerful infrared laser the scientists worked with emits light waves thought to be invisible to the human eye.

    But packing a lot of photons in a short pulse of the rapidly pulsing laser light makes it possible for two photons to be absorbed at one time by a single photopigment, and the combined energy of the two light particles is enough to activate the pigment and allow the eye to see what normally is invisible.

    “The visible spectrum includes waves of light that are 400-720 nanometers long,” explained Kefalov, an associate professor of ophthalmology and visual sciences. “But if a pigment molecule in the retina is hit in rapid succession by a pair of photons that are 1,000 nanometers long, those light particles will deliver the same amount of energy as a single hit from a 500-nanometer photon, which is well within the visible spectrum. That’s how we are able to see it.”

    Neat! But please don’t shine lasers into your eyes even if it’s supposed to be invisible.