Your speakers aren't broken; the video is soundless.
It's also shows a very direct and simple way to make a superhydrophobic surface out of soot.
I recommend the first method from the video because acetone is way more flammable, and I have no idea where you'd get a wickless burner. I don't have any of those.
Here there be tygers.
Well, math not tygers, but consider yourself forewarned.
The video goes through the concepts of hydrophobicity and hydrophilicity (sp?) as well as super- versions of each, paying special attention to the math of the angles as well as the energy between the surface and the liquid then the liquid and the vapor phase.
I'm going to have to watch this a couple of times to understand the math a little better.
If you get it before I do, please explain it to me.
There is actually some decent chemistry being explained in Breaking Bad.
I assume they had some chemistry consultant on set to write things on the board and proof the explanations that Walter was giving to his class.
Admittedly, Walter is portrayed as a pretty awful teacher who has some really interesting things to say about a subject that he finds fascinating. I'm hopeful I'm a little more engaging with my students much of the time, but I fear that sometimes I come off a bit like Walter White in the classroom.
Well, dangit.
I've been saying that the heat-killing ability of milk toward chili peppers was because the capsaicin is soluble in fat which means that full-fat milk should be way more effective at reducing the burn.
But the study cited in this video says that skim milk was slightly more effective than was full-fat milk.
Dangit, how dare they learn something that makes a good story I've been telling for a couple of decades not be true anymore...
I promise that I'll have something fun and dopey for next week. We've been on a run of pretty heavy content mostly telling us that polymers are killing us.
I'm going to go outside and watch some butterflies.
Bunch of videos about PFAS because I can't bring myself to write the dozen of separate posts that these should all be posted as.
Watch one...take a break...come back and watch another. Don't run them all through at once.
It's not cheery stuff, folks.
