Joule seeks knowledge - loves to learn

The famous British scientist Joule loved physics since he was a child. He often did some experiments on electricity and heat by himself.

One year during the holidays, Joule and his brother traveled to the countryside together. The smart and studious Joule did not forget to do his physics experiments even when he was playing.

He found a lame horse, held by his brother, and quietly hid behind it. He used a Voda battery to pass current to the horse, hoping to test the animal's reaction after being stimulated by the current. reaction. As a result, the reaction he wanted to see occurred. The horse jumped wildly after receiving the electric shock, and almost kicked his brother.

Although danger has emerged, this has not affected the mood of Xiao Joule, who loves to experiment, at all. He and Giulia rowed a boat to a lake surrounded by mountains, where Joule wanted to test how big the echo was. They filled their muskets with gunpowder and pulled the triggers. Unexpectedly, with a "bang", a long flame spurted out from the muzzle of the gun, burning Joule's eyebrows, and almost scared his brother into falling into the lake.

At this time, the sky was covered with thick clouds and there was lightning and thunder. Joule, who was just about to go ashore to hide from the rain, found that it took a long time after the lightning to hear the rumble of thunder. What was going on?

Joule didn’t care about hiding from the rain, so he dragged his brother up a hill and carefully recorded the time between lightning and thunder with his pocket watch.

After school started, Joule couldn’t wait to tell the teacher all the experiments he had done and asked the teacher for advice.

The teacher looked at the studious and inquisitive Joule and smiled, and patiently explained to him: "The propagation speeds of light and sound are different. The speed of light is fast and the speed of sound is slow, so people always want to see lightning before hearing it. Thunder and lightning actually happened at the same time."

Joule suddenly understood. From then on, he became more obsessed with learning scientific knowledge. Through continuous learning and careful observation and calculation, he finally discovered the thermal work equivalent and the law of conservation of energy, and became an outstanding scientist.

The joy of reading is unparalleled. Life is like a flowing stream, and books are flowing life.

In life, there are always various voices lingering in the ears. The moved ones rush into the bottom of my heart, and the tired ones also wander away between the brows. That dazzling life and talent are condensed into volumes of pages that linger in your hands and noses.