The story of famous Franklin
1, Franklin's spiritual food
Franklin,/kloc-a famous American politician and scientist in the 0/8th century, loved reading since childhood. My family is poor and I have no money to go to school. I have lived alone since I was a child. Often hungry to save money to buy books to read. One day, Franklin saw a white-haired old woman on the road. She was too hungry to walk. Lian Xin gave her the only piece of bread. The way the old woman looked at Franklin, she was also a poor man and couldn't bear to accept his bread. "You eat, I still have a lot in my bag." Franklin patted his backpack full of books. Franklin took out a book from his backpack and read it with relish. The old woman was eating bread. "Son, why don't you eat bread?" The old woman asked. Franklin smiled and replied, "reading is much more delicious than bread!" " "Due to financial constraints and limited ability to buy books, he had to borrow books frequently. He often knocks on the door to borrow books from friends, even lights a lamp, concentrates on reading, refreshes himself with cold water when he is tired, sits down and continues reading, and returns the books to the owner on time the next morning, never breaking his word.
Gorky would rather be beaten than study.
Lenin, the great writer of the former Soviet Union, called him "the most outstanding representative of proletarian art". He was born into a carpenter's family in Russian times. He lost his father at the age of 4 and was placed in foster care at his grandmother's house. Because of his extremely cold family, he only attended primary school for two years. 10 years old, entering the cold "human world". He worked as an apprentice, porter, caretaker and baker. He also wandered to southern Russia twice and was tortured by a miserable life. But he likes reading very much. In any case, he will seize every opportunity to pounce on the book and read it hungrily. As he himself said, "I jumped into the book, just like a hungry man jumped into the bread." In order to study, he endured humiliation. 10 years old, working as an apprentice in a shoe store. When he has no money to buy books, he borrows books everywhere. At that time, preschool children were actually slaves: shopping in the street, making stoves, cleaning the floor, washing vegetables and taking care of children ... from morning to half an hour every day. After a hard day, I insist on reading with a homemade lamp. The proprietress forbade Gorky to study and went to the attic to find books herself. When she found them, she tore them up. I was beaten by my boss's wife for studying. Gorky can endure anything, even torture, in order to study. He said, "If someone suggested to me,' Go to the square and hit you with a stick!'" "I think I can accept this condition." Edison used books as his pillow.
Edison, a famous American scientist, had nearly 2,000 inventions in his life and was known as the "king of inventions". This is inseparable from his diligent study. He often stays up late reading books and looking up information. He was so sleepy that he took a book as a pillow and lay down in the laboratory for a while. Therefore, someone said humorously, "No wonder Edison had so much knowledge. It turns out that he wants to absorb nutrition from books in his sleep. "
(2) Examples of celebrities' success through actions.
Franklin 1
Franklin,/kloc-a famous American politician and scientist in the 0/8th century, took part in the independence struggle last week, drafted the Declaration of Independence, negotiated with Britain on behalf of the United States, signed the Paris Peace Treaty, founded the Pennsylvania Newspaper and established the first public library in the United States.
He made an important contribution to the study of atmospheric electricity and invented the lightning rod. Autobiographical author. Franklin liked reading since he was a child. My family is poor and I have no money to go to school. I have lived alone since I was a child. Often hungry to save money to buy books to read.
One day, Franklin saw a white-haired old woman on the road. She was too hungry to walk. Lian Xin gave her the only piece of bread. The way the old woman looked at Franklin, she was also a poor man and couldn't bear to accept his bread.
"You eat, I still have a lot in my bag." Franklin patted his backpack full of books. Franklin took out a book from his backpack and read it with relish. The old woman was eating bread. "Son, why don't you eat bread?"
The old woman asked. Franklin smiled and replied, "reading is much more delicious than bread!" " "Due to financial constraints and limited ability to buy books, he had to borrow books frequently.
He often knocks on the door to borrow books from friends, even lights a lamp, concentrates on reading, refreshes himself with cold water when he is tired, sits down and continues reading, and returns the books to the owner on time the next morning, never breaking his word.
2. Kuang Heng
Kuang Heng studies hard and works hard. In the Western Han Dynasty, there was a farmer's child named Kuang Heng. He wanted to study very much when he was a child, but because his family was poor, he couldn't afford to go to school. Later, he learned to read from a relative before he could read.
Kuang Heng can't afford books, so he has to borrow books to read. At that time, books were so valuable that people who had books refused to lend them to others easily. During the busy farming season, Kuang Heng worked as a short-term worker for wealthy families and asked them to lend him books for free.
A few years later, Kuang Heng grew up and became the main labor force in the family. He works in the field all day, and only has time to read a little book during his lunch break, so it often takes ten days and a half months to finish reading a book.
Kuang Heng was in a hurry, thinking: planting crops during the day, no time to read, you can spend more time reading at night. But Kuang Heng's family is too poor to buy oil for lighting. What should we do?
One night, Kuang Heng was lying in bed reciting the books he had read during the day. Behind me, I suddenly saw a light coming through the east wall. He stood up and went to the wall to have a look. Ah! It turned out that the neighbor's lamp was stolen from the crack in the wall.
So Kuang Heng thought of a way: he picked up a knife and dug several cracks in the wall. In this way, the light coming through is also very big, so he gathered the light coming through and began to read.
Kuang Heng studied hard and thrived in this way, and later became a very learned man. This story is also called "Digging a wall to steal light" and "Digging a wall to borrow light".
3. Helen Keller
Helen Keller is blind and deaf, but she tries to change from a compassionate little girl to a strong woman who is respected by the whole world. If life is really unfair, then life is extremely unfair to her.
She can give up her dream and hide in a dark corner and cry loudly. No one will blame her. She can also lie in bed or sit in a wheelchair and be served like a vegetable.
But all this, she didn't do it, she just learned the blind language with the help of the teacher, and what she moved only depended on her never-giving-up faith and perseverance. She painted her ideal sky with the brightest color of life.
4.da Vinci
Leonardo da vinci, a famous painter in Renaissance Europe, loved painting since he was a child. His father sent him to Florence, a famous Italian city at that time, to learn from the famous painter Fo Rocchio. The teacher asked him to start by drawing eggs. He painted for more than ten days.
Seeing that he was a little impatient, the teacher said to him, "Don't think it's easy to draw an egg, you know, no two eggs in 1000 are exactly the same;" Even if it's the same egg, it just looks different from another angle.
The oval outline of an egg will be different. Therefore, if you want to express it perfectly on drawing paper, you have to work hard. "From then on, Leonardo da Vinci devoted himself to studying sketches, and after a long period of hard and diligent artistic practice, he finally created many immortal paintings.
5. Watts
As a teenager, Watt didn't receive a complete formal education because of family poverty and infirmity. He studied in a grammar school in greenock, and got excellent grades in mathematics, but he dropped out of school before graduation.
However, under the guidance of his parents, he always insisted on self-study and became interested in physics and mathematics very early. In order to invent the steam engine, Watt worked hard to build several steam engines, but there was air leakage everywhere and it could not be started.
But he didn't flinch in the face of difficulties and went on with the experiment. From 1766, in more than three years, Watt overcame the difficulties in materials and technology, and finally made the first prototype at 1769.
3. Stories of foreign celebrities reading books
Franklin's Reading Story
Franklin liked reading since he was a child. Poor family, no money to go to school, made a living on his own since childhood. Often hungry, save money to buy books. One day, Franklin saw an old white-haired driver on the road. He was too hungry to walk.
Lian Xin gave her his only piece of bread. The way the old woman looked at Franklin, she was also a poor man and couldn't bear to accept his bread. "You eat, I still have a lot in my bag." Franklin patted his backpack full of books.
Franklin took out a book from his backpack and read it with relish. The old woman was eating bread. "Son, why don't you eat bread?" The old woman asked. Franklin smiled and replied, "reading is much more delicious than bread!" " "
Due to financial constraints and limited ability to buy books, Franklin had to borrow books frequently. Franklin often knocked on the door to borrow books from his friends, and even lit a lamp to concentrate on reading. When he was tired, he refreshed himself with cold water and then sat down to finish reading.
There are several famous people named Franklin in history.
Benjamin Franklin (1706 65438+ 10-1790 April17) (also translated as Benjamin Franklin and Ben Ming Jie Franklin) was born in Boston, Massachusetts, USA. He is an American politician and physicist. Rosalind elsie franklin (or translated as rosalind franklin, R.E. Franklin) was a British physical chemist and crystallographer. Franklin delano roosevelt (English: Franklin D.Roosevelt,1882,65438+1October 30-65438+April 0945, 12), known as "Little Roosevelt" in history, was the 32nd president of the United States. He is the only person in American history who has been re-elected for more than two terms (re-elected for four terms and died in the fourth term). Franklin pierce (1804,165438+1October 23rd (the year of Jiazi) ~ 1869 (the past year), 65438+1October 8th), President of the United States (/. He hasn't achieved anything great, but he seems to have been sheltered by God. Not only did he have the opportunity to rise to the top when he was young, but he also surprised him in the presidential election. He is called another dark horse after james knox polk, creating an absolute advantage that has never been seen since james monroe. Because his sympathy for the south was not seen in the northern States, the country split and he retired at the end of his term. He was the first American president born in the19th century. British captain and Arctic explorer sir john franklin (sir john franklin,1April 78615-1June 847 1 1) disappeared in the process of searching for the Northwest Passage. The whereabouts of him and other crew members have been a mystery for more than ten years. Aretha franklin, the best tradition of the 48th Grammy, R&; B singer (traditional R&; B vocal performance) champion.
Franklin. U.s. deputy secretary of commerce lavin. Barbara Franklin, former US Secretary of Commerce.
At present, "Franklin" is generally translated into "Franklin" in Chinese, and "Franklin" is not commonly used. Franklin is a word that often appears in British and American names, so celebrities named after Franklin emerge one after another.
The heroic deeds of modern celebrities in Wu.
Franklin invented the lightning rod.
Franklin slowly lifted the kite into the sky, and it rained heavily. A flash of lightning overhead, Franklin quickly put a finger near the key. A strong electric spark flashed in his hand. Franklin knew that the current in the sky was transmitted to his hand through hemp rope and copper key. He shouted excitedly: "electricity, captured, captured by the electricity in the sky!" " He put the copper key into the rechargeable Leyden bottle, and a blue electric spark suddenly appeared in the Leyden bottle.
Franklin succeeded. He risked his life (this is a very dangerous experiment, and Russian scientist Lichtman died for it. Students must not imitate. ) It proved that lightning is a natural phenomenon, debunked the ancient myth about lightning, made contributions to the development of electricity, and invented lightning rod from this, which prevented thousands of high-rise buildings from being struck by lightning.
In the history of electricity, Franklin was the first person who correctly expounded the essence of electricity and was a pioneer of electricity. At the same time, he has a good performance in optics, chemistry, heat, botany and literature.
Pioneer. At the same time, he has a good performance in optics, chemistry, heat, botany and literature.
What kind of person does Franklin belong to among world celebrities? How do you personally understand him? Do you know the story of Franklin?
In my opinion, Franklin is a typical businessman and politician.
Qi is a famous story about adventure.
The story of Franklin
1746, an English scholar made an electrical experiment with a glass tube and a Leyden bottle in Boston. Franklin watched his performance with great interest and was deeply attracted by the emerging electrical science. Then Franklin began to study electricity. Franklin did many experiments at home, studied the properties of two kinds of charges, and explained the sources of electricity and the phenomena existing in matter. Before the eighteenth century, people could not correctly understand what lightning was. At that time, it was generally believed that thunder and lightning were the wrath of God. Some people of insight who don't believe in God tried to explain the cause of lightning, but they all failed. The view that lightning is "gas explosion" is quite popular in academic circles.
In an experiment, Franklin's wife Lide accidentally touched the Leyden bottle. When the lightning flashed, Lide was hit and fell to the ground, pale, and lay at home for a week before recovering. Although this was an accident in the experiment, Franklin, who was quick-thinking, thought of lightning in the air. After repeated thinking, he came to the conclusion that lightning is also a discharge phenomenon, which is essentially the same as electricity generated in the laboratory. So, he wrote a paper entitled "On lightning in the sky is the same as our electricity" and sent it to the Royal Society. But Franklin's great idea was ridiculed by many people, and some even ridiculed him as "a madman who wants to separate God from thunder and lightning".
Franklin was determined to prove everything with facts. 1752 One day in June, it was overcast with thunder and lightning, and a storm was coming. Franklin and his son William came to an open place with a kite with a metal pole on it. Franklin held the kite high, while his son flew with the kite string. Because of the strong wind, the kite was quickly put into the sky. In an instant, thunder and lightning, pouring rain. Franklin and his son are pulling a kite string together, and the father and son are anxiously looking forward to it. At this moment, just a flash of lightning passed over the kite. Franklin approached the string on the kite with his hand, and there was a terrible numbness at once. He couldn't restrain his inner excitement and shouted, "William, I got an electric shock!" " "Later, he introduced the electricity from the kite line into the Tesco bottle. After returning home, Franklin conducted various electrical experiments with lightning, which proved that lightning in the sky has exactly the same properties as electricity generated by artificial friction. Franklin's hypothesis that electricity in the sky and electricity on the ground are the same thing has been well confirmed in his own experiments.
The success of the kite experiment made Franklin famous in the scientific world. The Royal Society gave him a gold medal and hired him as a member of the Royal Society. His scientific works have also been translated into many languages. His electrical research has achieved a preliminary victory. However, in the face of honor and victory, Franklin did not stop further research on electricity. 1753, the famous Russian electrician Lichtman was killed by lightning in order to verify Franklin's experiment, and he was the first victim of electrical experiment. The price of blood makes many people wary and afraid of lightning detection. But faced with the threat of death, Franklin did not flinch. After many experiments, he made a practical lightning rod. He fixed an iron bar several meters long on the roof with insulating material, and a thick iron wire was tightly tied to the iron bar, reaching to the ground. When lightning struck the house, it went straight into the earth along the metal pole through the conductor, and the building was intact. 1754, lightning rod began to be used, but some people think it is ominous, and it will bring drought if it goes against God's will. Steal lightning rods at night. However, science will eventually overcome ignorance. After a gust of lightning and thunder, the cathedral caught fire; High-rise buildings with lightning rods are safe. Facts have educated people and made them believe in science. Lightning rods spread to Britain, Germany, France and finally all over the world.
Franklin's contribution to science lies not only in electrostatics, but also in a wide range of research fields. Mathematically, he created the Eight Rubik's Cube and Sixteen Rubik's Cube, which have special properties and complicated changes, and are still praised by scholars. In thermodynamics, he improved the heating stove, which can save three quarters of the fuel, and is called "franklin stove"; In optics, he invented bifocal glasses for the elderly, which can not only see near things, but also see far things. He and hartle of Cambridge University used the evaporation of ether to obtain a low temperature of minus 25 degrees (Celsius) and founded the theory of evaporative refrigeration. In addition, he also studied meteorology, geology, acoustics and ocean navigation, and made many achievements.
Flies and spaceships
Nasty flies seem to have nothing to do with the grand space cause, but bionics closely connects them.
Flies are notorious "smelly things". They can be seen everywhere and have a bad smell. Flies have a particularly sensitive sense of smell, and can smell the smell thousands of meters away. But flies don't have noses. What does it rely on to act as a sense of smell? It turns out that the "nose" of flies-olfactory receptors are distributed on a pair of antennae on the head.
Each "nose" has only one "nostril" communicating with the outside world, which contains hundreds of olfactory nerve cells. If a smell enters the nostrils, these nerves will immediately convert the smell into nerve electrical impulses and send them to the brain. The brain can distinguish substances with different smells according to different nerve electrical impulses generated by substances with different smells. Therefore, the fly's antenna is like a sensitive gas analyzer.
Inspired by this, bionics successfully imitated a very strange small gas analyzer according to the structure and function of the olfactory organs of flies. The probe of this instrument is not metal, but a live fly. A very fine microelectrode is inserted into the olfactory nerve of the fly, and the guided neuroelectric signal is amplified by an electronic circuit and sent to an analyzer; The analyzer can give an alarm as soon as it finds the signal of odorous substances. This instrument has been installed in the cockpit of the spacecraft to detect the composition of the gas in the cabin.
This small gas analyzer can also measure harmful gases in submarines and mines. This principle can also be used to improve the input device of computer and the structural principle of gas chromatography analyzer.
From Fireflies to Artificial Luminescence
Since the invention of electric light, life has become more convenient and rich. But electric lamps can only convert a small part of electric energy into visible light, and most of the rest is wasted in the form of heat energy. The heat rays of electric lamps are harmful to people's eyes. So, is there a light source that only emits light without heating? Humans have turned their attention to nature again.
In nature, many creatures can emit light, such as bacteria, fungi, worms, mollusks, crustaceans, insects and fish, and the light emitted by these animals does not produce heat, so it is also called "cold light".
Fireflies are one of many luminous animals. There are about 65,438+0,500 species of fireflies. Their luminescent colors are yellow-green, orange, and their brightness is different. Fireflies emit cold light, which not only has high luminous efficiency, but also is generally soft, suitable for human eyes, and the light intensity is relatively high. Therefore, bioluminescence is an ideal light source for human beings.
Scientists found that the luminous device of fireflies is located in the abdomen. This light emitter consists of three parts: light emitting layer, transparent layer and reflecting layer. There are thousands of luminescent cells in the luminescent layer, all of which contain fluorescein and luciferase. Under the action of luciferase, fluorescein combines with oxidation to emit fluorescence with the participation of intracellular water. The luminescence of fireflies is essentially a process in which chemical energy is converted into light energy.
As early as 1940s, people created fluorescent lamps on the basis of studying fireflies, which greatly changed the lighting sources of human beings. In recent years, scientists first isolated pure fluorescein from fireflies, then isolated luciferase, and then synthesized fluorescein artificially by chemical methods. Biological light source composed of fluorescein, luciferase, ATP (adenosine triphosphate) and water can be used as a flash lamp in mines filled with explosive gas. Because this lamp has no power supply and does not produce magnetic field, it can be used to clear magnetic mines under the irradiation of biological light source.
Now, people can get cold light similar to biological light by mixing some chemicals for safe lighting.
Electric fish and volt battery
Many creatures in nature can generate electricity, and there are more than 500 kinds of fish alone. People call these discharging fish "electric fish".
All kinds of electric fish have different discharge skills. Electric ray, electric catfish and electric eel have the strongest discharge ability. Medium-sized torpedoes can generate about 70 volts, while African torpedoes can generate up to 220 volts; African electric catfish can generate 350 volts; Electric eels can generate 500 volts. There is a South American electric eel that can generate up to 880 volts, and it is called the champion of electric shock. It is said that it can kill big animals like horses.
Where is the mystery of electric fish discharge? After the anatomical study of the electric fish, it is finally found that there is a strange power generation organ in the electric fish. These generators are made up of many translucent disk-shaped batteries, called electric plates or plates. Due to the different types of electric fish, the shape, position and quantity of the electric plates of the generator are also different. The generator of electric eel is prismatic and located in the muscles on both sides of the caudate spine. The torpedo generator is shaped like a flat kidney, arranged on both sides of the body midline, with 2 million electric plates. The generator of electric catfish originated from some kind of gland, located between skin and muscle, with about 5 million electric plates. The voltage generated by a single plate is very weak, but because there are many plates, the voltage generated is very large.
The extraordinary skills of electric fish have aroused great interest. /kloc-at the beginning of 0/9th century, Italian physicist Volt designed the world's earliest voltaic battery based on electric fish power generation organ. Because this kind of battery is designed according to the natural generator of electric fish, the research of electric fish called "artificial electric officer" also gives people such enlightenment: if the power generation organ of electric fish can be successfully imitated, then the power problem of ships and submarines can be solved well.
Jellyfish windward ears
"Swallows fly low before the rain, cicadas sing, and the sky clears up in the rain." Biological behavior is related to the change of weather. Fishermen along the coast know that fish and jellyfish living along the coast swim to the sea in batches, which indicates that a storm is coming.
Jellyfish, also known as jellyfish, is an ancient coelenterate that floated in the ocean as early as 500 million years ago. This lower animal has the instinct to predict storms, and every time before the storm warning, it will swim to the sea to take refuge.
It turns out that in the blue ocean, infrasound (frequency is 8- 13 times per second) generated by the friction between air and waves is always a prelude to storm warning. This infrasound is inaudible to the human ear, but the little jellyfish is very sensitive. Bionics found that there is a thin handle in the ear cavity of jellyfish, a small ball on the handle, and a small auditory stone in the ball. When the infrasound before the storm hit the auditory stone in the jellyfish's ear, the auditory stone stimulated the nerve receptors on the ball wall, so the jellyfish heard the rumble of the coming storm.
Bionics imitates the structure and function of jellyfish ears, designs a storm predictor for jellyfish ears, and accurately simulates the organs that jellyfish feel infrasound. This instrument is installed on the front deck of the ship. When it receives the infrasound wave of the storm, it can automatically stop the horn rotating 360 degrees, and the direction it refers to is the direction of the storm. The reading on the indicator can show the intensity of the storm. This forecaster can forecast storms 15 hours in advance, which is of great significance to navigation and fishery safety.
Childhood stories of eight celebrities and great men, 200 words.
Franklin, a great man during the founding of the United States, had a habit of reliving one day every night.
He found himself with 13 serious mistakes. Here are three of them: wasting time, worrying about trifles and arguing with others. The clever Franklin found that unless he could reduce such mistakes, he would accomplish nothing.
So he chooses a defect to hit every week, and then makes a record of winning or losing every day. Next week, he will pick out another bad habit, get ready, and then fight. Franklin's battle to get rid of a bad habit every week lasted for more than two years. No wonder he became one of the most beloved and influential people in American history. Can every salesperson, like Franklin, examine his own shortcomings and fight against them unremittingly until he wins?
Adventure stories of "Nine" celebrities
The story of Franklin
1746, an English scholar made an electrical experiment with a glass tube and a Leyden bottle in Boston. Franklin watched his performance with great interest and was deeply attracted by the emerging electrical science. Then Franklin began to study electricity. Franklin did many experiments at home, studied the properties of two kinds of charges, and explained the sources of electricity and the phenomena existing in matter. Before the eighteenth century, people could not correctly understand what lightning was. At that time, it was generally believed that thunder and lightning were the wrath of God. Some people of insight who don't believe in God tried to explain the cause of lightning, but they failed. The view that lightning is a "gas explosion" is popular in academic circles.
In an experiment, Franklin's wife Lide accidentally touched the Leyden bottle, and the crackle flashed by. Lide was knocked to the ground, pale, and lay at home for a week before he recovered. Although this was an accident in the experiment, Franklin, who was quick-thinking, thought of lightning in the air. After repeated thinking, he came to the conclusion that lightning is also a discharge phenomenon, which is essentially the same as electricity generated in the laboratory. He wrote a paper entitled "On lightning in the sky is the same as our electricity" and sent it to the Royal Society. However, Franklin's great idea was ridiculed by many people, and some even ridiculed him as "a madman who wants to separate God from lightning".
Franklin was determined to prove everything with facts. 1752 One day in June, it was overcast, with thunder and lightning, and a storm was coming. Franklin and his son William came to an open place with a kite with a metal pole on it. Franklin held the kite high, and his son flew with the kite string. Because of the strong wind, the kite was quickly released. In an instant, it was thunderous. It is raining cats and dogs. Franklin and his son are pulling a kite string together, and the father and son are anxiously looking forward to it. At this moment, just a flash of lightning passed over the kite. Franklin approached the string on the kite with his hand, and there was a terrible numbness at once. He couldn't restrain his inner excitement and shouted, "William, I got an electric shock!" " Later, he introduced the electricity from the kite line into the Lego bottle. After returning home, Franklin conducted various electrical experiments with lightning, which proved that lightning in the sky and electricity generated by artificial friction have exactly the same properties. Franklin's hypothesis that electricity in the sky and electricity on the ground are the same thing has been well confirmed in his own experiments.
The success of the kite experiment greatly improved Franklin's reputation in the scientific community all over the world. The Royal Society gave him a gold medal and hired him as a member of the Royal Society. His scientific works have also been translated into many languages. His electrical research has achieved a preliminary victory. However, in the face of honor and victory, Franklin did not stop his further study of electricity. 1753, the famous Russian electrician Lichtman tried to verify Franklin's experiment. Unfortunately, he was electrocuted by lightning, which was the first victim of the electrical experiment. The price of blood makes many people wary and afraid of lightning experiments. However, faced with the threat of death, Franklin did not flinch. After many experiments, he made a practical lightning rod. He fixed an iron bar several meters long on the roof with insulating material, and tied a thick iron wire tightly to the iron bar, reaching to the ground. When lightning strikes the house, it passes through the wire along the metal pole. The building is intact. 1754, lightning rod began to be used, but some people think it is ominous, and it will bring drought if it goes against God's will. They secretly removed the lightning rod at night. However, science will eventually overcome ignorance. The cathedral caught fire after a thunderstorm and gale. However, high-rise buildings equipped with lightning rods are safe. Facts have educated people and made them believe in science. Lightning rods spread to Britain, Germany, France and finally all over the world.
Franklin's contribution to science lies not only in electrostatics, but also in a wide range of research fields. Mathematically, he created the Eight Rubik's Cube and Sixteen Rubik's Cube, which have special properties and complicated changes, and are still praised by scholars. In thermodynamics, he improved the heating stove, which can save three quarters of the fuel, and is called "franklin stove"; In optics, he invented bifocal glasses for the elderly, which can not only see near things, but also see far things. Together with hartle of Cambridge University, he used ether evaporation to get a low temperature of minus 25 degrees (Celsius) and founded the evaporative cooling theory. In addition, he also studied meteorology, geology, acoustics and ocean navigation, and made many achievements.