• 8 Posts
  • 35 Comments
Joined 1 year ago
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Cake day: June 9th, 2023

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  • It’s all about conservation of energy.

    In your satellite scenario, the sum of kinetic and potential energy must remain fixed. This means higher orbits are slower orbits. In fact this is observable in man-made satellites that are moved to higher or lower orbits. There is no free ride.

    In the “heat death” of the universe scenario, the total amount of energy in the universe is conserved (it is finite) but the volume of the universe keeps growing. On a long enough time scale the universe’s average energy per unit volume approaches zero.








  • Lemmy is also finicky about federating certain actions between instances. If you watch the modlog you will sometimes see a user be banned, unbanned, and then immediately rebanned. That’s a mod or admin trying to get content removal to federate out to other instances.

    That happened in the case of the spammer here ~3 hours ago. Their content was removed from their home instance but it stayed up in this community. It’s gone now, though.












  • If I’m car camping with family I love my 2-burner Coleman stove attached to a 20 lb. propane tank. Nobody in my group will ever lack a warm meal or a hot drink on a cold day.

    If I’m hiking to camp then my old external frame pack has a special place in my heart. It isn’t for every adventure, but I pull it out when I need to haul weird or oversized loads for special occasions. I’ve carried bundles of firewood, cases of beer, family-size tents, and other foolish things that wouldn’t work well with my more modern packs.

    Edit: If I’m hiking and carrying normal stuff then I love my Lafuma down sleeping bag. It’s wonderfully small and light while still being toasty warm.