I was the only one who handed in a solution for that particular problem, it was scored 70 out of 100. I no longer have my solution, but I doubt that it was very accurate, and I didn't have time for experiments.
Interesting, but the headline was misleading -- this was about the time to get the first 90%. The last drop was not discussed. I was already intrigued about how one could know when a drop was the last drop.
It only flows if it's in a liquid state. That happens when the temperature gets high enough. Over exceedingly long timespans Sol will enter its red giant phase & engulf the Earth in its outer atmosphere. This will raise all glass remaining on the surface above said glass's melting point. So if you're being exceedingly pedantic & considering multi-billion-year timespans, then most glass will eventually flow. Some glass may escape this fate by no longer being on the surface of the Earth.
Isn't it always in a liquid state? It just has an exceedingly high viscosity at human compatible temperatures. So high that it turns out there's effectively no movement over thousands or even millions of years.
But it's not a proper solid, ie the usual phase transition is absent.
For the wok example, I recommend just putting the wok back on the stove for a few seconds and have the thin water film evaporated, before quickly coating it with an oiled tissue, and store it hot. It takes 30 seconds max.
Cleaning it while it's still hot is also a good strategy for pans. Obviously that has limits on how dirty it can be. But if everything went well while cooking it's fast and painless
They suggest reheating the wok on the stove, why would that imply it has to be done before eating? Does your stove not turn on after you have finished eating?
I typically wash my wok (and any carbon steel skillet) before eating. They seem to be easier to clean while hot.
But I use an outdoor butane burner for the wok, so I'm not heating it back up afterwards. I usually wash and set it upside down on the counter to drain.
Seriously. Oil, thicker juices, etc I stick something under the end of the bottle so it pools in the curve close to the top and then come back later to pour it out. Laundry detergent I just leave inverted draining into the cup (and/or rinse several times with water as the washer fills). Hand soap I rinse as I'm making the next bottle of 50/50 mix for a foaming dispenser.
Oh academia, trying to find scientific truths and end up just being pragmatic.
I know they'd take offense to such things, which is why I say it.
This is no different from a mom blog, yet because its academia, we pretend its valuable. Adam Ragusa-like people could/should do this study. We should value it as much. As long as its replicated, good for me.
And let us not pretend there is some sort of pure magic that happens in a lab. I'll take 10 average joes replicating a study over 1 lab unreplicated. (FYI that is the scientific method, Appeal to Authority is the opposite of the scientific method)
11th problem here:
https://ortvay.elte.hu/2009/E09.pdf
I was the only one who handed in a solution for that particular problem, it was scored 70 out of 100. I no longer have my solution, but I doubt that it was very accurate, and I didn't have time for experiments.
https://en.wikipedia.org/wiki/Pitch_drop_experiment
https://en.wikipedia.org/wiki/Glass#Reputed_flow
Isn't it always in a liquid state? It just has an exceedingly high viscosity at human compatible temperatures. So high that it turns out there's effectively no movement over thousands or even millions of years.
But it's not a proper solid, ie the usual phase transition is absent.
Under careful supervision, the wok won't even get anywhere near 100C
For the wok example, I recommend just putting the wok back on the stove for a few seconds and have the thin water film evaporated, before quickly coating it with an oiled tissue, and store it hot. It takes 30 seconds max.
But I use an outdoor butane burner for the wok, so I'm not heating it back up afterwards. I usually wash and set it upside down on the counter to drain.
I know they'd take offense to such things, which is why I say it.
This is no different from a mom blog, yet because its academia, we pretend its valuable. Adam Ragusa-like people could/should do this study. We should value it as much. As long as its replicated, good for me.
And let us not pretend there is some sort of pure magic that happens in a lab. I'll take 10 average joes replicating a study over 1 lab unreplicated. (FYI that is the scientific method, Appeal to Authority is the opposite of the scientific method)
The paper was clearly based entirely on math models, so I tested it.
Yeah, it's horseshit.
And unless you tested flourine pollution, you'd never know.