this post was submitted on 20 Feb 2025
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Water has both adhesive and cohesive properties, and this bullshit is one of the results. I hate it so much. Basically the bit of wwater in contact with the surface of the spout likes to stick to that spot; and the above that likes to stick to the water stuck to the surface and so on, making it kinda roll along angled surfaces even when it seems like gravity should be yanking it right off.
And they absolutely could shape the spout in a way that stops this - they just choose not to.
Never heard of the oil coating trick @DontRedditMyLemmy mentioned, but it makes sense - oil is hydrophobic, so that could eliminate the adhesion part of the equation; and without that moving the stream initially, its cohesion won't be an issue either.
Or do what they do in chemistry which is to take a rod (or in the kitchen anything like a dinner knife or handle) and place it against the spout and let the liquid then run down the rod.