On the afternoon of July 23rd, we went to play in a huge lotus pond in Suzhou.
The cool breeze blows gently, and we stand on the bridge and stare at this beautiful painting: the lotus pond is endless, the river is crystal clear, and the lotus flowers in the pool are graceful and dancing with the wind. They have a plenty of delicate little girls dressed in pink; Have a plenty of noble Bai Lianhua ... It's really mud without touching! Pieces of green. Lotus leaves are like jade plates. There are so many gestures that I can't see anything.
At this time, some small water droplets in the mineral water my aunt drank accidentally "flew" to the lotus leaf, only to see them rolling around on the lotus leaf like little pearls, enjoying themselves. When they are tired of playing, they rest in the concave place in the middle of the lotus leaf. Curious, I asked my aunt, "Aunt, shouldn't those little drops of water be a pool of water?" Why did it become a transparent' pearl'? "
Aunt can't seem to remember clearly: "It seems to be because of something on the lotus leaf. Go home and check online. "
So I went home with a big question mark. When I got home, I was a little sleepy because it was too dark. Ask my baby computer this question tomorrow.
Later, I learned that it was related to the fluctuation of water adsorption and surface tension of lotus leaves. The water absorption of lotus leaf is far less than the surface tension of water, so it does not touch water. Lotus leaves are covered with "hills" next to each other, which are covered with fluff, like dense vegetation on the mountain. On the top of the "hills", there are steamed bread-like "bunker" bumps. Therefore, the depression of the "mountain bag" is filled with air, thus forming an extremely thin air layer with only nanometer level on the tight leaf surface. Because rain and dust are like giants to these microstructures on the surface of lotus leaves, when they fall, they can only contact with the "bunker" on the "hill" through a layer of nano-air, and can't "invade" further. Water forms water droplets, which roll and wash away the dust on the leaves. The nano-structure of lotus leaf is not only beneficial to its self-cleaning, but also beneficial to prevent a large number of harmful bacteria and fungi floating in the air from invading it.
Life is full of science, and I will continue to explore the mystery of life in the future. This summer vacation, I went to Suzhou with my aunt and sister, and this time I got a little harvest.