Which inventor invented the story of what?
Edison invented the electric light.
American inventor Edison. They are children of railway workers, who drop out of school before finishing primary school and sell newspapers on the train for a living. Edison is an extremely diligent man. He likes to do all kinds of experiments and make many exquisite machines. He is interested in electrical appliances. Ever since Faraday invented the electric motor, Edison was determined to make electric lights and bring light to mankind.
Edison made a detailed test plan after carefully summarizing the previous failure experience in manufacturing electric lamps, which was divided into two aspects: one was to classify and test 1600 different heat-resistant materials; The second is to improve the vacuum pumping equipment to make the bulb have a high vacuum degree. He also studied the new generator and circuit shunt system.
Edison tested more than 1600 kinds of heat-resistant luminescent materials one by one, but platinum wire has good linear energy, but platinum is surprisingly expensive, so we must find a more suitable material to replace it. 1879, Edison finally decided to use carbon filament after many experiments. He sprinkled carbon powder on a piece of cotton silk, bent it into a horseshoe shape, heated it in a crucible, made it into a filament, put it in a bulb, and then pumped the air out of the bulb with an air extractor. It can be used continuously for 45 hours when the light is on. In this way, the first batch of carbon filament incandescent lamps in the world came out.
Bell invented the telephone.
Bell, 1847 was born in England and worked as a deaf teacher with his father when he was young. He wants to make a machine to let deaf people see sound with their eyes.
1873, Bell, who became a professor at Boston University in the United States, began to study the device of transmitting multiple telegrams on the same line-multiplex telegrams, and he sprouted the idea of transmitting people's voices to distant places with electricity, so that people thousands of miles away could talk face to face. So bell began to study the telephone.
1On June 2nd, 875, Bell and his assistant Watson tried multiple telegrams in two rooms respectively, and an accidental accident inspired Bell. In Watson's room, there is a spring stuck to the magnet of the telegraph. When Watson pulled it away, it shook. At the same time, Bell was surprised to find that the spring on the telegraph in his room vibrated and made a sound. It is the current that transmits vibration from one room to another.
Bell's mind suddenly broadened. He thought: If a person speaks to a piece of iron, the sound will cause the iron to vibrate; If an electromagnet is placed behind the iron sheet, the vibration of the iron sheet will inevitably produce large and small currents in the electromagnet coil. This fluctuating current travels far away along the wire, so won't the same vibration and sound appear on similar equipment in the distance? In this way, the sound travels far away along the wire. Isn't this the dream phone!
Franklin invented the lightning rod.
1752, 46-year-old American scientist Franklin made a kite out of silk and put it into the sky with a string in a stormy weather. The lower end of the hemp rope is tied with a metal key. When the hemp rope is wet by rain, the key becomes a conductor. At this time, he put his hand close to the key and suddenly saw the electric spark jumping between the key and his finger. At the same time, he felt a sharp pain in his fingers. This experiment proves that thunder in the sky is actually a large-scale discharge phenomenon.
Therefore, Franklin thinks that if a metal wire is installed in a tall building and the lower end of the metal wire is grounded, according to the principle of tip discharge, the danger caused by lightning strike to the building can be avoided. This led to the invention of lightning rod.
Because of the invention of lightning rod, the world in which human beings live is a little safer. The invention of lightning rod seems to be an accident. A coincidence made a great man have a whim and produced an invention.
Stephenson invented the train
When Stephenson worked in a coal mine, he saw every day that coal trucks always carried coal out of the mine bit by bit. The work is very hard, and he has a great idea: he wants to build a steam locomotive, which can carry a lot of coal and run very fast. So he buried himself in designing such a motorcycle.
18 14, Stephenson made a motorcycle called "Half Boot". When he was driving this locomotive in a coal mine for a test run, many people laughed at this broken car, which could only tow 30 tons of goods and walk only six or seven kilometers per hour. It looks like a stupid duck and walks like an earthquake. Some malicious people even spread rumors everywhere, saying: the noise of the train is very loud, which will scare the cows away from eating grass, so there is no milk;
Chickens and ducks are frightened, so the eggs are gone; Moreover, the chimney of the train will release toxic gas, which will kill birds; Sparks will splash and cause fire; If the boiler explodes, the consequences will be unimaginable, and passengers will suffer the pain of broken hands and bones! Some officials who were originally in favor of the train test began to strongly oppose these rumors and said with great certainty that it was impossible to use steam locomotives as a means of transportation.
In the face of technical difficulties and the pressure brought by these rumors, Stephenson was not discouraged and stopped like other people who were also inventing trains. He always believed that the train he invented would bring great help to mankind, so he summoned up his courage, summed up his experience and decided to continue to study and improve trains.
1825 On September 27th, before dawn, many men, women and children living in Stalin, England got up one after another. Some of them walk, others ride to the same place. What are they going to do? It turned out that Stephenson was going to hold a test drive there. Just as the locomotive started slowly, a young man galloped in, shouting that he would race Stephenson's train. So, the train and the horse started a thrilling race.
At first, I saw the train running slowly, while the horse was running wildly. After a while, the safety valve of the train rose, the blower screeched and clouds of smoke rose. The speed gradually increased, and soon the train and the horse were neck and neck. After a while, the train was not tired, but as the train went on, the horse became more and more tired. Later, the horse became weaker and weaker and was thrown farther and farther by the train.
This galloping steel dragon can carry 90 tons and 400 passengers, with a top speed of 24 kilometers per hour. This is the first train in the world-"voyage".
Since then, the train has been widely praised and valued by people, and it has officially entered the historical stage, which has brought the development of land transportation into a brand-new period. Stephen Sun's fearless, indomitable, diligent and innovative spirit is praised by people all over the world and is always worth learning.
5. Luban makes umbrellas
A long time ago, there were no umbrellas in the world. At that time, it was inconvenient for people to go out in summer, and the sun burned their skin; Wet your clothes on rainy days. Lu Ban thought: How nice it would be to make something that can shelter from the wind and rain! One day, it was extremely hot, and he was sweating while working. Suddenly I saw many children "plop plop" jumping into the lotus pond to play with water. After a while, a child picked a lotus leaf and put it on his head.
Lu Ban thought it was fun and asked them, "What are you doing with a lotus leaf on your head?" The child said noisily, "Master Lu, look, the sun is like a big fire wheel. We are not afraid of the sun with lotus leaves on our heads. " Lu Ban grabbed a lotus leaf and looked at it again and again. Lotus leaf is round, with veins on one side and a cover on the head, which is light and cool.
Lu Ban's heart lit up. He hurried home, found a bamboo, chopped it into many thin strips, and made a shelf according to the lotus leaf; I found another sheepskin, cut it into a circle and put it on a bamboo shelf. "All right, all right!" He cried happily, "This thing can shelter from the wind and rain and shade the sun, and it is also very smart."
Lu Ban's wife heard him shout and ran out of the house and asked him, "What happened?" Lu Ban handed the newly made thing to his wife and said, "Try this thing. Everyone takes it with them when they go out. They are not afraid of rain or sun."
Luban's wife looked at it, thought about it, and said, "It's not bad, but the rain stopped and the sun went down, so it's not convenient to walk with such things." If only it could be put away. " "Yes, yes!" Lu Ban was very happy to hear this, so he started with his wife, changed this thing into a movable one, spread it out when it was used, and put it away when it was not used. What is this thing? This is our umbrella today.