• 0 Posts
  • 347 Comments
Joined 1 year ago
cake
Cake day: July 26th, 2023

help-circle






  • psud@aussie.zonetoScience Memes@mander.xyzbrains!
    link
    fedilink
    English
    arrow-up
    1
    ·
    edit-2
    6 days ago

    LED was available in the early 2000s I have a few remaining LED lights from about 2001 (and definitely from before 2004) still working. They are much heavier than modern LED lights due to large finned heat sinks and didn’t fit in my nicer light fittings. They weren’t in supermarkets then, you had to look for them, I may have bought them online







  • psud@aussie.zonetoScience Memes@mander.xyzYeasty
    link
    fedilink
    English
    arrow-up
    3
    ·
    6 days ago

    Also homebrewer here, you’re correct, that yeast can be reused several times, limited by the yeast mutating away from what you want, though many brewing yeasts have been reused for centuries

    The yeast is only half done with its intended activity too. What it tries to do:

    • Digest sugar into poisonous ethanol (which we quite like)
    • Wait, trusting the ethanol to keep everything else out
    • Digest the ethanol to acetic acid (vinegar)

    Wine vinegar is grape juice done to brewers yeast’s plan