• Commented on London Bridge
    Here's a situation I'm trying to understand. Suppose the air in the house to be heated starts at 15C. The resident wants it to be 18C. And suppose the heat pump raised the air temp only to 18C. 18 >...
  • Commented on Starship bloopers
    My understanding of normal-matter spherically symmetric shells, is that inside them, gravitational force is zero. See, for example, This was derived from Newtonian gravity, so perhaps Einsteinian (general relativity) calculations are different?...
  • Commented on Central Banking on Mars!
    The Internet Archive has a copy of "Final Encounter" by Harry Harrison in a 1964 issue of Galaxy Magazine, here:
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