Today, I accompanied my mother to the supermarket. My mother bought a lot of things. When I came back, some eggs in it had been broken. I don't think there is anything more fragile than eggs. I picked up one, looked angrily and pinched it. It didn't break, so I used a little force, but it didn't break. I began to slowly increase my strength, and then tried my best to squeeze, but it was still intact. I wonder why such a fragile egg doesn't break when I squeeze it so hard. I asked my mother curiously, and my mother said, go and discuss this problem yourself.

So I turned on the computer to find the answer. Soon, I understood why eggs can't be crushed by hand. It turns out that a small egg, although its shell is very thin, is oval, with countless arches, and can bear great force, which is greater than the human grip. When you pinch it, it will evenly distribute the force you exert on the whole egg surface. It has large stress area, small pressure and unbreakable pressure. In normal times, for example, when handling eggs, when my mother knocks an egg, it will be easily broken as long as she touches it hard, because the stress area is small and it is only stressed in one place.

I learned another thing. As long as you are willing to be a conscientious person, life is full of knowledge.