Why is the water wet?
Is this a childish question? Can you answer this question? If so, think of this answer. Now let's know this in some detail. I will finally compare my answer with that.
You put your hand in the bucket of water, took it out and some water remained with your hand. We call it sticking out like this. How to define it in the language of physics? If a solid surface were to be replaced by a liquid at the junction with a gas surface, we would call such a phenomenon wet. That is, before you put your hand in the water, your finger was only in contact with the air, now this surface contact has changed a bit and some of it has been replaced by water. This is wetting.
What happened in the water? This is because of its molecular structure and the angle formed by their contact with our skin. (Details from the link below). We call some solid objects hydrophobic and some hydrophilic. It has to do with this angle. If water is kept at a hydrophobic level, the water will not stick to it and it will not get wet. This phenomenon is the basic building block of biochemistry.
In short, the water is not wet. Wetting is a characteristic of the combination of a liquid and a solid.
But does it have any practical application? This property of water and its measurement of angles with different objects is a branch of the science of chemistry. Its practical benefits are in printing, geology, food science, civil physics and many other fields. One of our next big challenges in biochemistry is to find out how wet the water is.
If you knew the answer, you have a very good knowledge of science. (It does not address the neuroscience aspect).
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