• 0 Posts
  • 15 Comments
Joined 2 years ago
cake
Cake day: August 15th, 2023

help-circle





  • Alumina (aluminum oxide) is what you are extracting from aluminum ore and tough as fuck, which is why it’s easier to dissolve the rest of the stuff around it first.

    Oxygen is mainly that other “junk” you have to separate with electricity. While the smelters only run at 4.5 volts (per cell), they have to push about 300kA to get the stuff up to ~950°C which breaks its chemical bond.

    You probably have never even touched pure aluminum before. Aluminum and oxygen react so quick, all we typically ever see and touch is a alumina shell.





  • remotelove@lemmy.catoxkcd@lemmy.worldxkcd #3094: Mass Spec
    link
    fedilink
    English
    arrow-up
    1
    ·
    edit-2
    20 days ago

    Speculating, of course, I would say there wouldn’t be enough change to get a perceivable effect through other kinds of noise at the scale we are talking about. Yes, there would be an effect, but with all other environmental variables included, the results may appear completely random.

    Then again, I suppose much of this boils down to the accuracy of the tools that you use to measure the results.


  • HF tools are not designed for the long term, generally. If you need a tool to work at least once, for one job that you are never going to do again, HF is “good enough”.

    The rule of thumb is to never buy a tool there that could result in a gruesome death if it fails to protect your life, like jack stands. (Invest in quality safety equipment first if you get something like an angle grinder.)