Jackie’s arch?

The first part of the article triggers me. Heat in the physical sense is thermal energy. Like with other forms of energy, you need an energy difference to actually have it perform work, or you need to invest work to create an energy difference (in a heat engine or a heat pump, respectively). Just like you would letting a weight fall to the ground and lifting it back up. And cooling is removing heat, so ice cubes are actually cooling your drink.

In a pan, low specific heat capacity is not that desirable. That’s why people use big honking chunks of cast iron to prepare food: so adding the cold food doesn’t lower the temperature too much. But the metal also gets you good heat conductivity to quickly get the heat from the stovetop to where it’s needed.

Conversely the handle is made from materials that have low conductivity so heat gets conducted more slowly towards your skin. The higher capacity helps but isn’t that crucial: air has fairly low heat capacity but you can stick your hand into an oven at 100C without getting burned. Unlike boiling water, which has quite a high heat capacity.

The refrigerant should have a high heat capacity to move as much heat as possible for a given temperature difference. Most systems employ a liquid-gas phase change somewhere in the cycle to transfer even more heat energy in the form of latent heat. R134a, a common refrigerant, has a heat capacity about 3/4 of that of water.

One more thing: even if the electrical energy is completely nonrenewable, heat pumps still offer an environmental advantage. Gas power plants are fairly efficient, around 40% of the extractable heat energy gets converted to electricity. With a COP of 2.5, a heat pump would produce as much output as burning the gas in a perfectly efficient furnace. If the COP is larger, the heat pump is more efficient than burning the gas directly, and modern heat pumps usually exceed 2.5 except in the coldest days of winter. Add to that the existence of dual-cycle power plants with 60% efficiency, and the losses of a conventional furnace, and heat pumps may win even on days where the COP is slightly less than 2.

IIRC from the “What we left behind” documentary, they were shot on film. They even had a few minutes of HD material scanned from the film reels. It’s the CGI that was baked only into the tape version that makes it so difficult to do a HD remaster. And why they went back to the tapes when producing the DVD release.

Especially when you don’t have a US keyboard. How the fuck am I supposed to navigate through the info document when the key combination to follow links is Ctrl+] and ] itself is hidden behind some modifier combo?

Die Wirksamkeit wird eher impliziert: Die homöopathischen Mittel haben reguläre Beipackzettel, auf denen auch nicht vermerkt ist, dass sie keiner wissenschaftlichen Wirksamkeitsstudie unterzogen worden sind. Sie stehen in der Apotheke im Sichtbereich, wo man sie als Kunde nicht selbst in die Hand nehmen kann. Die Krankenkasse bezahlt die Behandlung damit, und sie werden regelmäßig als "sanfte" Alternative zur Schulmedizin dargestellt. Laut Artikel werden sie in dem Post bzw. den Antworten auf die Kritik als "Heilmittel" bezeichnet. Alles zusammen erweckt schon den Eindruck, dass es sich um wirksame Medikamente handelt.

Zum Glück gibt es auch kritische Stimmen in den öffentlich-rechtlichen Medien: MaiThink X hat mal eine Sendung zu dem Thema gemacht (S3E1), Die Anstalt hatte die fehlenden wissenschaftlichen Prüfstandards zum Thema (Folge 64).

Isn’t that the same for Reddit or Lemmy? The content creators and mods don’t see a penny either. Operationally, a social network probably requires a lot more compute power and somewhat more bandwidth compared to a site that serves mostly static content. But I don’t see why small donations shouldn’t cover that. The cost per user seems moderate, otherwise few people could afford to run an instance with 1000s of users without charging them.

They seem to have pulled Season 3 here in Germany even though it was marketed as an “Amazon Original”. Seasons 1 and 2 are still on Prime. Pretty disappointed because I just started a rewatch.