Early telegrams could only transmit one message at a time, but could not exchange signals at the same time. Because Edison himself was a telegraph technician, he began to improve the traditional telegraph and made a double telegraph. 1974, he developed a quadruple telegraph, which is also a synchronous telegraph. At that time, before the development of radio, synchronous transmitter was a major breakthrough.
2. Copying machine
At first, Edison invented paraffin paper, which was only widely used as packaging material for food and candy. Later, he tried to carve the outline of the words on wax paper to form a wax lettering paper tray, put white paper under the paper tray, and then rolled it off the wax lettering paper with an ink roller. A wonderful thing happened, and clear handwriting appeared on the white paper.
Later, after many improvement experiments, Edison began to produce the copier he invented in 1976, and all of a sudden institutions, schools, institutions and organizations adopted this stencil mimeograph. Because Edison's copier is very popular all over the world, Edison deeply realized that he should invent things that people generally and deeply need.
3. Improve the telephone.
As we all know, the modern telephone was invented by Bell. In fact, the telephone can send and receive clearly, thanks to Edison's repeated experiments, which broke through the traditional pattern and made a toner transmitter, which improved the sensitivity, volume and receiving distance of the telephone in one fell swoop. Otherwise, you will often say hello when you call now! Hey! I can't hear you. I can't hear you clearly.
4. The phonograph was born
/kloc-one night in February, 877, the staff of Mengluoyuan Laboratory trembled slightly, not because of the cold, but because they heard the recording for the first time in human history: "Ma _ has a little sheep, and its fur is as white as snow. No matter where mom goes, the lamb is always by her side.
This great invention needs no more introduction from the little jar teacher, and everyone can understand how wide its application is. The French government also awarded Sir Edison the title! Later, Edison made many improvements to the phonograph until the drum was changed to a bakelite turntable. This is not a year or two, but after decades of continuous improvement!
Newton is alone in the orchard at home. Because he walked and thought, he accidentally bumped into an apple tree in the garden. At this moment, an apple just hit Newton's head. Newton suddenly woke up from the problem and picked up the apple. At this time, he fell into another problem: why did the apple fall to the ground instead of floating in the sky? Finally, Newton put forward a universal law of the simplest phenomenon: gravity.
6. The story of Madame Curie
Madame Curie was a French-born Polish scientist who studied radioactivity and won the Nobel Prize twice in her life. Mary has been studying very hard since she was a child. She has a strong interest in learning and special hobbies. She never misses any learning opportunities easily, and shows tenacious enterprising spirit everywhere. Since primary school, she has been the first in every subject. 15 years old, graduated from high school with a gold medal. Her father studied physics at St. Petersburg University earlier, and her father's thirst for scientific knowledge and strong enterprising spirit also deeply influenced little Mary. She likes all kinds of instruments in her father's laboratory since she was a child. When she grew up, she read many books on natural science, which filled her with fantasies. She is eager to explore the scientific world. But her family at that time did not allow her to go to college. /kloc-started to be a tutor for a long time at the age of 0/9, and at the same time taught himself various courses to prepare for future study. In this way, until the age of 24, she finally came to study at the Faculty of Science of Paris University. With a strong thirst for knowledge, she listened carefully to every class. Hard work has made her worse and worse, but her academic performance has always been among the best, which not only envied her classmates, but also surprised her professors. Two years after entering school, she confidently took the Bachelor of Physics exam, ranking first among 30 candidates. The next year, she won a bachelor's degree in mathematics with the second place.
7. The story of Darwin
Darwin once went to the garden with his mother to cultivate the soil for young trees when he was a child. His mother said, "soil is a treasure, and young trees can only grow with it." Don't underestimate this soil, it grows grass, fattens cattle and sheep, and gives us milk to drink and meat to eat; It is it that grows wheat and cotton so that we can have food and clothes. The soil is too precious. "
Darwin asked, "Mom, can that soil grow puppies?"
"I can't!" Mother smiled and said, "The puppy was born by a dog mother, not a native."
Darwin asked again, "I was born to my mother, and my mother was born to my grandmother, right?"
"Yes! All the people were born to his mother. "
"Who gave birth to the earliest mother?"
"It's God!"
"Then who was born of God?"
Mom can't answer. She said to Darwin, "children, there are many things in the world that are mysteries to us." Please grow up like a small tree. These mysteries are waiting for you to solve! " "
Darwin liked flowers, trees, birds, insects and fish since he was a child. After school, he still maintains a keen interest in nature. He rode horses, hunted, fished, collected minerals, caught insects, and went into the Woods to observe the habits of birds. For Darwin, the whole world is a big question mark, and there are too many things to explore and think about. He often meditates while observing, even forgetting the danger. Once, Darwin was walking in an old castle. He walked slowly, absent-minded, and suddenly stepped on the air and fell off the battlements. At this time, Darwin was very sober and his mind was still thinking.
8. Joule's story
Joule, a famous British scientist, loved physics since he was a child. He often does some experiments about electricity and heat by himself.
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 and his brother rowed the boat to the lake surrounded by mountains. Joule wants to see how big the echo is here. 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.
9. Franklin's story
1one day in June, 752, in the suburb of Philadelphia, USA, it was covered with dark clouds and thunder and lightning. On a wide lawn, two people, an old man and a young man, are flying kites with great interest. Suddenly, a flash of lightning cut through the clouds and drew a "Z" in the sky. Then there was a loud thunder and the rain poured down.
The old man shouted, "William, stand in the straw house over there and tighten the kite string." At this time, lightning flashed one after another, and the thunder was louder and louder. Suddenly William shouted, "Dad, look!" " "The old man looked in the direction pointed by his son, only to see that the original bare and taut hemp rope suddenly burst into anger, and those tiny fibers stood up straight. He shouted happily, "It's coming!" While telling his son to be careful, he slowly approached the copper key attached to the hemp rope with his hand. Suddenly, as if he had been pushed, he fell to the ground and was numb. Without considering the pain, he got up from the ground and connected the Leyden bottle he had brought with him to the bronze key. There is electricity in this Leyden bottle, which releases electric sparks. It turns out that the sky electricity and the earth electricity are the same! He and his son took the Leyden bottle home like a treasure.
The people who seized Sky Power were Franklin and his son William. Franklin was not only a great scientist, but also an outstanding politician and diplomat. He was one of the founders of the Declaration of Independence and the first American ambassador abroad.
After the kite experiment, Franklin wrote a paper about the similarity between lightning and electricity, expounded the essence of lightning, and put forward the idea of making lightning rods to protect buildings from lightning. The lightning rod invented by Franklin was all the rage and spread to Britain, France, Germany, Europe and America.
10, the story of Nobel
Nobel's father is a talented inventor who devoted himself to chemical research, especially explosives. Influenced by his father, Nobel showed a tenacious and brave character from an early age. He often goes to test explosives with his father. Years of studying explosives with his father also made his interest quickly turn to applied chemistry.
1in the summer of 862, he began to study nitroglycerin. This is a difficult journey full of danger and sacrifice. Death has always been with him. An explosion experiment exploded and the laboratory was blown up without a trace. All five assistants were killed, even his youngest brother. This amazing explosion gave Nobel's father a very heavy blow and died soon. His neighbors, out of fear, also sued Nobel to the government. Since then, the government has not allowed Nobel to conduct experiments in this city.
But Nobel is indomitable. He moved his laboratory to a boat in a suburban lake to continue his experiment. After long-term research, he finally found a substance that is very easy to cause explosion-mercury fulminate. He used mercury fulminate to make explosive detonator, which successfully solved the problem of explosive detonation. This is the invention of detonator. This is a major breakthrough on Nobel's scientific road.
Nobel made many inventions in his life and obtained 255 patents, including 129 kinds of explosives. As he lay dying, he was still obsessed with the research of new explosives.