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.
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.