Joule, a famous British scientist, loved physics since he was a child. He often does some experiments about electricity and heat by himself.

One holiday, Joule and his brother traveled to the suburbs. Joule, who is clever and studious, never forgets to do his physics experiments even when he is playing.

He found a lame horse, led by his brother, and quietly hid behind him. He used a volt battery to electrify the horse, trying to see how the animals reacted after being stimulated by the current. As a result, the reaction he wanted to see appeared. The horse jumped wildly after being shocked and almost kicked its younger brother.

Although the danger has appeared, it has not affected the mood of little Joule who loves to do experiments. He rowed with giggle to the lake surrounded by mountains, where Joule wanted to try the echo. They filled the musket with gunpowder and then pulled the trigger. Who knows "bang", a long flame spouted from the muzzle and burned Joule's eyebrows, almost scaring my brother into the lake.

At this time, the sky was covered with thick clouds, lightning and thunder. Joule, who just wanted to go ashore to take shelter from the rain, found that it took a long time to hear the thunder after every lightning. What happened?

Joule didn't take shelter from the rain, dragging his brother up a hill and carefully recording the time of lightning and thunder with his pocket watch.

After school started, Joule almost wanted to tell the teacher all the experiments he had done and ask for advice from the teacher.

The teacher smiled at Joule, who was eager to learn and curious, and patiently explained to him: "The speed and harmony of light are different. The speed of light is fast and the speed of sound is slow, so people always want to see lightning before hearing thunder, but in fact lightning and thunder happen at the same time. "

Joule suddenly realized. Since then, he has been more fascinated by learning scientific knowledge. Through continuous study and careful observation and calculation, he finally discovered the mechanical equivalence of heat and the law of conservation of energy, and became an excellent scientist.

2. Knowledge-self-improvement

Prague, an English physicist, was poor when he was a child. With his unremitting pursuit of his dreams and tenacious efforts, he finally made great achievements. And the poor years he experienced became the driving force that inspired him to move on in the future.

When he was studying at school, his parents could not buy him nice clothes and comfortable shoes because of the poor economic conditions at home. He is often in rags, dragging a pair of worn leather shoes that don't match his feet. But young Prague never felt inferior because of poverty, and he never complained that his family could not provide him with superior living conditions. Those oversized shoes look ridiculous on his feet, but he doesn't feel inferior. On the contrary, he cherishes these shoes very much, because they can bring him unlimited motivation.

It turns out that this pair of shoes was given to him by his father. The family is poor, so we can't buy him a pair of comfortable and strong shoes. Even these old leather shoes are his father's. Although the father was also full of guilt, he still gave his son ardent hope, unparalleled encouragement and strong emotional support. His father wrote in his letter ... I'm sorry, son. I hope in a year or two, my shoes won't be too big on your feet. "... I hope that once you achieve something, I will be proud of it, because my son works hard in my broken shoes. ..... "This letter with profound meaning and full of expectation has always been like an invisible force, pushing Prague to walk on the rugged scientific mountain road and step on thorns. Galileo's story

Galileo was born in Pisa, Italy on 1564, next to the famous leaning tower of Pisa. His father is a bankrupt aristocrat. When Galileo came into this world, his family was already poor. /kloc-At the age of 0/7, Galileo was admitted to the University of Pisa. In college, Galileo not only studied hard, but also liked to ask questions to his teachers. Even if it is something that people are used to, he will get to the bottom of it, and it will be clear at a glance.

If you lose money, you lose very little; If you lose a friend, you lose a lot; If you lose courage, you lose everything.

-(Germany) Goethe

Anyone in a dance academy will accomplish nothing; Whoever does not dominate himself will always be a slave.

-(Germany) God

If you want to love your own value, you have to create value for the world.

-(Germany) Goethe

It is only a moment that determines a person's life and the whole destiny.

-(Germany) Goethe

We can't all serve our motherland in the same way. Everyone should teach students in accordance with their aptitude. -(Germany) Goethe

Courage is the most precious of all human qualities.

-(America) John F. Kennedy

Life should be like a candle, burning from the top to the end, always bright.

Xiaochu Nv

The value of life is measured by what people are doing now.

-Xu Wei

The road is trodden by people, and the history is written by people. Every move of mankind is writing its own history.

-Ji Hongchang

Silkworms in spring will weave until they die, and people will never stop waiting. There is still work to be done. Make it a good category for young people.

-Wu

The only shortcoming we can't correct is weakness.

-(Su) ostrovsky

People should control their habits, but never let them control themselves. A person who can't get rid of his bad habits is worthless. -(Su) ostrovsky

A person's life may burn or rot, I can't rot, I am willing to burn!

-(Su) ostrovsky

Society is like a ship, and everyone should be ready to steer.

-Ibsen (Denmark)

Everybody, who doesn't love life? Love life, and then love groups.

-Qiu Jin

People who are full of joy and fighting spirit will always welcome lightning and sunshine with joy.

-(British) Huxley

Life is a battle. -(Russian) Korolenko