You’d have to ask a physicist. I would be surprised if you couldn’t make other liquids “wet”. The solid analogy helps with conceptualising an interface, one material on another. I suppose you could make water wet, by freezing a block and then splashing said block with water but that doesn’t equate to it being wet itself, if that makes sense.
Wetting is a rather complex topic. Basically, yes.
Not all solids can be wetted. Wax, for example: water beads up on a waxed surface; it does not actually wet the surface.
Not all "wetting" involves water. Soldering and brazing involve "wetting" base materials with a molten filler metal. Dripping molten metal on the base material does not necessarily "wet" it either: the molten filler can "bead" just like water on wax. When it solidifies, the filler metal is not bonded to the unwetted base metal.
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So only solids can be wet?
You’d have to ask a physicist. I would be surprised if you couldn’t make other liquids “wet”. The solid analogy helps with conceptualising an interface, one material on another. I suppose you could make water wet, by freezing a block and then splashing said block with water but that doesn’t equate to it being wet itself, if that makes sense.
Wetting is a rather complex topic. Basically, yes.
Not all solids can be wetted. Wax, for example: water beads up on a waxed surface; it does not actually wet the surface.
Not all "wetting" involves water. Soldering and brazing involve "wetting" base materials with a molten filler metal. Dripping molten metal on the base material does not necessarily "wet" it either: the molten filler can "bead" just like water on wax. When it solidifies, the filler metal is not bonded to the unwetted base metal.