3 ms·

Seems questionable that Rayleigh would have known that oil molecules are hydrophobic on one end and hydrophilic on the other.

• FpUser 2y ago
  No idea. I was curious myself and decided to ask our "guru". The answer seems a bit fishy
  • klyrs 2y ago
    Whatever possessed you to post that bilge, despite finding it fishy, is beyond me. In the future, you might choose to keep such interactions to yourself.
• bryanlarsen 2y ago
  He certainly knew oil was hydrophobic. I don't think the hydrophilic nature was necessary for the logic. If it was, I'm sure he knew that soap oils are both hydrophobic and hydrophilic and had ways of figuring out that soap oils consist of a single type of molecule and aren't a mixture.
  • ummonk 2y ago
    He used olive oil though, not a soap oil.
    • bryanlarsen 2y ago
      Olive oil is a soap oil.
      • CamperBob2 2y ago
        If that's true, then the ChatGPT answer isn't wrong, at least for the specific case of olive oil. I love how a few self-appointed guardians of hackerhood are able to declare certain resources as haram, even when they propose a plausible answer to a question that went unanswered more than once in the thread. Instead of embarking on a discussion that leaves us all a bit better informed, the literal messenger is attacked. Does that gratify intellectual curiosity? Really?
        • ummonk 2y ago
          No the idea that Rayleigh knew the film was one molecule thick, let alone why it was one molecule thick, is clearly made up. The paper makes it clear that he was reporting the thickness, and thought this might provide information on molecule size.
          • bryanlarsen 2y ago
            LOL, the first line of the ChatGPT response: `Lord Rayleigh didn’t know a priori that surface tension would cause the oil film to be exactly one molecule thick, `
            • ummonk 2y ago
              And then it goes on to provide various explanations as to why he may have known it a posteriori.
• caymanjim 2y ago
  > Seems questionable that Rayleigh would have known that oil molecules are hydrophobic on one end and hydrophilic on the other. That's not a true thing, so it kinda doesn't matter. Surfactants (soaps, emulsifiers) have hydrophobic and hydrophilic ends. Oils are just straight up hydrophobic and nonpolar and don't have a water-loving end.