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Joined 1 year ago
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Cake day: June 8th, 2023

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  • … but there is a way, and it has been proven.

    One of the more memorable physics classes I’ve had went into the history of discoveries that led to our understanding of relativity. The relevant story here, starts with how sound travels though air.

    Let’s say you’re standing at the bottom of a building shouting to your friend peeking out a window on the 5th floor. On a calm day, that friend will hear you at pretty much the same time as someone standing the same distance away, but on the street. However, if it’s windy, the wind pushes around the air through which the sound of your voice is traveling, the friend up in the window will have a slight delay in receiving that sound. This can of course be verified with more scientific rigor, like a sound sent in two perpendicular directions activating a light.

    Scientist at the time thought that light, like sound, must travel though some medium, and they called this theoretical medium the Aether. Since this medium is not locked to Earth, they figured they must be capable of detecting movement of this medium, an Aether wind, if you will. If somehow the movement of this medium caused the speed of light in one direction to be faster than another due to the movement of this medium, measuring the speed in two directions perpendicular to each other would reveal that difference. After a series of experiments of increasing distances and measurement sensitivities (think mirrors on mountain tops to measure the time for a laser beam to reflect), no change in the speed of light based on direction was found.

    Please enjoy this wikipedia hole: https://en.m.wikipedia.org/wiki/Michelson–Morley_experiment , and please consider a bit of caution before you refer to things as facts in the future!



  • I do this with my xreal glasses sometimes when washing dishes or whatever. Connected to phone in my pocket with a desktop mode, set a black wallpaper, and drag the video into a corner.

    It’s nice for situations like that, where you’re doing something with your hands and can’t reasonably place a screen in a way where you wouldn’t have to constantly strain your neck to look at it.














  • I don’t have a particular guide at the tip of my fingers, but I can share some recommendations based on my experience:

    • prefer a phone with USB-c if you plan on connecting USB things to it. the otg adapters for micro-b are kinda hit and miss when it comes to keeping the phone connected to power as well.
    • look out for clearances of those carrier locked prepaid phones from physical stores, you can get nice devices for nearly nothing
    • whatever you’re running on the phone, make sure it starts at startup, so you don’t need to go launching everything if you reboot for some reason
    • if the phone is"mission critical" e.g. random restart while in the middle of a print is unacceptable, turn off all the automatic updates and such.
    • a VNC server has been helpful, to remotely poke at the phone if I’m too lazy to go do it physically
    • get something that’ll keep the screen off the phone on. I’ve encountered reduced performance regardless of what battery optimizations I’ve turned off without doing that but YMMV depending on ROM.

    I fully expect the screen thing and the batteries bring in there constantly charging to kill the phones I’m using eventually, but it’s something I expect and accept. my octoprint phones have been fine so far, for a bit over a year 🤷‍♂️