• 0 Posts
  • 504 Comments
Joined 7 months ago
cake
Cake day: March 31st, 2025

help-circle

  • here if you need anything over certain power (6kW; depends on country i guess) you need a three phase installation, and even if you get single phase, it’s really handled as three phase split between single phase customers (a block gets three phase supply, then splits flats in three groups, each group gets connected to one phase). this gets supplied by a distribution transformer that might serve somewhere around 200 people per (in residential areas)

    i understand that sometimes americans also get distribution like this, with 208/120 three phase coming from substation, without 240v available


















  • also unless you’re dissipating much more heat out at lower temperature, it won’t even work as a heatsink because otherwise it goes pretty directly against second law of thermodynamics

    if i’m looking at this right, for copper alpha capture is actually still exothermic (by 3.7MeV and 4.4MeV for 63Cu and 65Cu respectively). it’s different from alpha process, because in alpha process whatever comes after calcium is two or more beta plus decays away from stable, that is there’s already too many protons and next alpha capture only makes it worse, and it all happens too fast for these decays to happen. it’s equilibrium process anyway at that point, but barriers are so large it probably doesn’t matter