does not take a scientist to understand this, just very simple example.
Fill two containers with water, and one of them added soap. Now, put a hand on each container for a few seconds and then take them out. You will see that the hand that you entered in the soapy water is wetter.
Another option is to put a towel on each container, that is to not be fooled by the feel or perception sensory, and after a few seconds you will notice that soapy water is wet more than just water.
But why this happens?
is simple, the water has a surface tension that causes the formation of drops of given size and that somehow prevents the water stays together and no discards of itself. This surface tension is visible at the sight of a mosquito walk on water, his thin legs depress the water, but fail to penetrate, this is known as surface tension.
Once we introduce soapy water, the surface tension of water decreases, because it is easier to break the surface, creating tiny droplets, and returning to the example of the mosquito, this time his legs will sink.
What if we put our hand in a bowl of mercury? Pure mercury is a liquid at ambient conditions, and high density as well as surface tension is also very high. This does not get wet at all, and we are completely dry hands. For example, when a broken thermometer mercury pellets are formed, if its surface tension was like water, would form larger pellets.
The next time you see the water thinking that there is something to wet herself rather than water.
Source: Culture Trivial
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