3 ms·
Due to the way surface tension works, many fewer than 1 in 1000 water molecules are wet. There’s a kids science experiment where you coat your hand in the righ
by hedora 3y ago
Due to the way surface tension works, many fewer than 1 in 1000 water molecules are wet.
There’s a kids science experiment where you coat your hand in the right powder, dip it in water, and it comes out dry. I can’t find a link to it though.
- justinclift 3y agoErrr, what's the definition of "wet" that you are using? Isn't the common definition of "wet" that it has water on it? So, by that definition... 100% of water molecules would be "wet".
- hedora 3y agoThe standard definition of wetting doesn't mention water. (For one thing, other liquids can make stuff wet.) The first few paragraphs on wikipedia are a pretty good summary, and the article also includes a picture of a water bead failing to wet a surface: https://en.wikipedia.org/wiki/Wetting https://en.wikipedia.org/wiki/Wetting
- justinclift 3y agoFrom that: Wetting is the ability of a liquid to maintain contact with a solid surface ... There's no solid surface for our purposes here, so that doesn't really seem to apply all that well?