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Yes, it is indeed due to Capillary action. As there are great answers already by Dynadin and Aravona and Snow Crash, I would strictly limit the scope of my answer to why it happens and how, just to...
Answer
Yes, it is indeed due to Capillary action. As there are great answers already by Dynadin and Aravona and Snow Crash, I would strictly limit the scope of my answer to why it happens and how, just to...