Traditional Culture Encyclopedia - Photography and portraiture - The physical principle of dripping water wearing through stone?

The physical principle of dripping water wearing through stone?

When a water droplet falls on a stone, it is first flattened and then scattered around. At the moment when the water droplet "falls" and "spreads out", countless water droplets are formed between the water droplet and the stone. Due to the surface tension of water, the surface area of ??these tiny bubbles must be shrunk to the minimum possible. When the bubble shrinks, the air inside the bubble is compressed, causing the air inside the bubble to have a greater pressure. The smaller the bubble radius, the greater the gas pressure inside the bubble. When these bubbles with a small radius burst, the high-pressure gas inside impacts the stone, causing minor damage to the stone, which accumulates over time and finally "pierces the stone".