The text of the mystery of the heavenly fire appears in a large way

The small article has sorted out the content of the mystery of the fire in the fifth grade Chinese volume of the Sujiao version of the national specimen, hoping that the original text of the text will be helpful to everyone's teaching or learning, and improve the efficiency of teaching and learning.

Billions of thunderstorms occur every year above the Earth, knocking people down and splitting tall trees in half. In ancient times, Westerners regarded thunderstorms as "God's wrath", while Chinese called them "thunder gods". Thunderstorms have long been a scary thing in people's minds.

So, what exactly is a thunderstorm? This mystery was not solved until the 18th century by the American scientist Benjamin Franklin.

Franklin has long observed that thunderstorms in the sky have many similarities with electrostatic discharge: they both emit light, the same color of light, the direction of light is similar, and they are accompanied by a ** sound, which can kill and injure animal ......From this, he boldly speculated that thunderstorms were the well-known phenomenon of electrical discharge. This inference may not seem surprising now, but it was incredible at the time.

People have become accustomed to thinking that heaven and earth are two worlds, and thunderstorms are the flames of the gods, so how can they be confused with things on earth? Not only did the general public not believe his reasoning, but even many people who claimed to be learned sneered at him. Faced with the teasing of people, Franklin decided to uncover the secrets of thunder and lightning through experiments.

One day in July 1752, the sky was cloudy and thunder and lightning were blowing. With the help of his son, Franklin lifted a kite high in the sky. A thin wire is tied to the kite to absorb the "heavenly electricity" in the clouds.

The kite flying string was made of hemp rope, and a ribbon was tied at the lower end of the rope, and a copper key was tied to the joint between the hemp rope and the ribbon, and Franklin stood in the house holding the ribbon. The kite flew higher and higher, looking from afar, like a small boat in a sea of clouds, jolting and shaking. A dark cloud swept over the kite, and Franklin noticed that the fibers on the twine were standing up like a crown of rage.

This is the signal of the hemp rope to change the electrification! Suddenly, a bolt of lightning split through the clouds, marking a zigzag in the sky, followed by a thunderbolt and a torrential downpour. When the hemp rope is wet, it becomes a conductor through which electric current can pass.

At this time, Franklin approached the copper key with his finger, and with a "snap", a blue fire core quivering flower suddenly flashed, and his arm was numb for a while. Franklin shouted ecstatically, "It's done!"

It worked! I've caught 'Skylight'! ”

Zhao Chan "Kite Experiment" shocked the world. It proclaims to the world that thunderstorms are just ordinary electrical discharges and that "the wrath of God" is nothing more than nonsense.

Later, Franklin invented the lightning rod based on the principle of electrical discharge. In this way, when the thunder and lightning roar, the tall buildings are safe and sound (yànɡ).

The text "The Mystery of Heavenly Fire" mainly talks about the "kite test" carried out by the American scientist Franklin in the weather of thunder and lightning in order to uncover the secret of thunderstorms, praised Franklin's scientific attitude of daring to explore and experiment, and explained that only through precise and meticulous observation, research and experimentation can the mysteries of nature be revealed.

The first part of the text writes that thunderstorms have always been a terrible thing in people's minds, the second part writes that Franklin finally unraveled the "mystery of heavenly fire" through the "kite test" that he personally conducted, and the last part writes that Franklin invented the lightning rod based on the principle of electrical discharge.