The straw for rotating the licking-free bra uses the invention principle of atmospheric pressure, and it is precisely because of this principle that it is convenient and does not waste milk. First of all, children can invent such a rotating straw, which shows that children are good at observing and loving thinking in daily life. Only those who are good at observing and thinking in daily cooking pots will invent daily necessities that are convenient for our lives like this child. In our present life, there are many ancestors who love life as much as this child and are good at observing and thinking. For example, we travel by train. In fact, the train was not driven by electricity at first, but by the principle of steam engine. But the main fuel of the train at first was firewood and coal, so it was called a train, which has been used until now. Speaking of the steam engine, we have to say that the famous British inventor james watt discovered and improved the steam engine. Because james watt's improvement of the steam engine made people enter? Age of steam? , the symbol of steam is used? Watt? Watt's name has also gone down in history.
Only those who love life and are good at observing and thinking about life will invent daily necessities that are convenient for life. It says that the steam engine was invented by Watt, so how did Watt invent the steam engine? What I'm talking about here is Watt's good observation and thinking about daily life. When Watt was a child, he was particularly fond of asking questions, and he was also a thinking child. He often asks questions that his parents and elders cannot answer. One day, little watt was watching grandma cook. At this moment, the kettle on the stove suddenly opened and made a noise. It is because of the noise that little Watt is attracted. He saw the lid of the kettle keep beating, as if it were going to fall off. Little Watt asked her grandmother curiously why the lid of the kettle was beating, but because she was busy cooking, she probably didn't know how to answer such a strange question, so she didn't tell him. But little Watt didn't feel depressed, but went to the kettle to study it himself, just like discovering a new continent. Little Watt watched it again and again, only to know that the steam of water was pushing the lid of the kettle to jump. It was because of this discovery when he was a child that he invented the steam engine when he grew up.
In fact, there are quite a few inventors like Watt, such as antonio meucci, the inventor of telephone, Edison, the inventor of electric light, and so on. They can invent these daily necessities that benefit mankind because of their love for life and good thinking.