6 ms·

I must be missing something. If something is a fluid... or at least a liquid... that means it... flows, right? Flow speed isn't infinite, so whenever you pull

I must be missing something. If something is a fluid... or at least a liquid... that means it... flows, right? Flow speed isn't infinite, so whenever you pull apart a liquid, you'll see some remnant of the pre-flow state. The thicker the liquid, the slower you need to pull it apart to see that. Is this surprising? Why wouldn't every liquid do this? In what way is this somehow special to some liquids and not others?

kulahan 2mo ago
Cavitation can be another “out” for that energy.
madaxe_again 2mo ago
Your intuition is correct, and what you’re describing is cavitation - which the article goes on to mumble about a little. Honestly, I am also struggling to see what the novel result here is. You can snap off a drip of pitch by pulling on it - if you shear it, it will probably just bend - yank on the droplet and it comes off with a satisfying snap. But then again I suppose if you lead a cosseted life, never played with the contents of a shed, and had your first practical experience of actual hands on behaviour of viscous liquids in a lab… you might shout “Eureka”.
- chupasaurus 2mo ago
  Pitch is a viscoelastic polymer while simple fluids are non-elastic, that's the whole point.
dataflow 2mo ago
Another issue I don't see how to solve is: how do you even gather the data? That is: how do you even know if someone (a) is doing the same job as a graduate of your program would do, (b) actually skipped a program or its equivalent, and (c) is making more than a graduate of your program? All of these are personal and private information. If I apply to a startup tomorrow and get hired without listing my engineering degree on my resume, then are they supposed to add me to some national database of uneducated engineers, list my compensation, and explain that they would've hired a graduate for the same role too? If I apply to another company and list my degree then is that gonna overwrite the database? How the heck would this actually work?
- dataflow 2mo ago
  Whoops, looks like I somehow posted on the wrong page.

kulahan 2mo ago

Cavitation can be another “out” for that energy.

madaxe_again 2mo ago

Your intuition is correct, and what you’re describing is cavitation - which the article goes on to mumble about a little. Honestly, I am also struggling to see what the novel result here is. You can snap off a drip of pitch by pulling on it - if you shear it, it will probably just bend - yank on the droplet and it comes off with a satisfying snap. But then again I suppose if you lead a cosseted life, never played with the contents of a shed, and had your first practical experience of actual hands on behaviour of viscous liquids in a lab… you might shout “Eureka”.

chupasaurus 2mo ago
Pitch is a viscoelastic polymer while simple fluids are non-elastic, that's the whole point.

dataflow 2mo ago

Another issue I don't see how to solve is: how do you even gather the data? That is: how do you even know if someone (a) is doing the same job as a graduate of your program would do, (b) actually skipped a program or its equivalent, and (c) is making more than a graduate of your program? All of these are personal and private information. If I apply to a startup tomorrow and get hired without listing my engineering degree on my resume, then are they supposed to add me to some national database of uneducated engineers, list my compensation, and explain that they would've hired a graduate for the same role too? If I apply to another company and list my degree then is that gonna overwrite the database? How the heck would this actually work?

dataflow 2mo ago
Whoops, looks like I somehow posted on the wrong page.