4 ms·
There's a fun experiment where you can grease a kitchen strainer and if the holes are small enough it'll hold water because of the surface tension.
by tbrownaw 4y ago
There's a fun experiment where you can grease a kitchen strainer and if the holes are small enough it'll hold water because of the surface tension.
- twawaaay 4y agoAnd at the same time it will pass a thick oil... all due to surface tension, polarity, etc. Which is to say don't think about the filter as a geometrical sieve that has holes that pass molecules solely based on their size (either it fits or not). This is not true even at macro level.