(1) Nobel developed explosives.
During 1864, a boat was parked on Lake Mara near Stockholm, Sweden. Residents nearby are full of fear about this ship, and no one dares to go near it, because Nobel, the king of explosives, is experimenting with making explosives on board.
It is a very dangerous job to study explosives. When Nobel tried to produce explosives in the laboratory, a big explosion occurred, killing five people on the spot, including Nobel's younger brother and his father. After the disaster, the surrounding residents were very frightened and strongly opposed to Nobel's making explosives there.
Undeterred by the explosion, Nobel moved the equipment to the nearby Lake Mara and continued his experiment on board.
Before Nobel, many people studied and made explosives, such as black powder in China and nitroglycerin invented by Italians. Nitroglycerin is much more explosive than black powder, but it is not easy to control, easy to explode by itself, and not easy to explode according to people's requirements. It is very dangerous to manufacture, store and transport, and people don't know how to use it, so people only use it to treat angina pectoris for more than ten years after its invention.
Nobel started with the manufacture and research of nitroglycerin. He first detonated nitroglycerin with black powder, and later invented a detonator to detonate, and obtained an effective method to make nitroglycerin explode. ?
After the success of the initial test, the big explosion of the laboratory was a great setback, and Nobel had to move the laboratory to the ship. Later, after many twists and turns, he found a new site in a place called Winterwigan, where he established the world's first nitroglycerin factory.
On the road of Nobel research, it is really full of difficulties and disasters. The nitroglycerin he made often exploded: an American train was blown into a pile of scrap iron; A factory in Germany, all in ruins; A seagoing ship, the ship sank and people died. ?
These tragic accidents have made countries around the world lose confidence in nitroglycerin, and some countries have banned the manufacture, storage and transportation of nitroglycerin. In this difficult situation, Nobel didn't lose heart and never gave up until he solved the problem of unstable nitroglycerin.
After repeated experiments, he finally invented the method of absorbing three parts of nitroglycerin with one part of diatomite (a tiny biological shell called diatom), and made an industrial explosive that was safe to transport and use for the first time. Nobel made persistent efforts to push forward his invention. He invented the explosive glue-using collodion and nitroglycerin to fry the glue.
Then a small amount of camphor was added to nitroglycerin and fried rubber to make smokeless powder.
Despite opposition and danger, Nobel devoted himself to research and finally developed explosives. Where there is a will, there is a way.
Madame Curie discovered radium.
From 65438 to 0897, Madame Curie studied radioactive substances. In order to extract a pure natural radioactive element, she got a ton of industrial waste residue that may contain this substance. Smelting, dissolution, precipitation and analysis are all carried out in the courtyard.
She is not afraid of hardship or the effects of radiation on her health. After three years and nine months, she finally extracted 0. 1 g new substance from several tons of slag and named it radium. This research also won her a Nobel Prize. But she doesn't love honor, treats money like dirt, awards medals to her youngest daughter and donates bonuses to France in the war. Her spirit has been praised by people from all over the world.
Edison improved the light bulb
Edison, an outstanding inventor, announced that he could invent a satisfactory lamp after studying the arc lamp. However, this kind of lamp needs special materials as the wick. Edison experimented with thousands of materials. After thousands of failures, in April of 1879, he improved the rod-shaped and tubular lamps of his predecessors and made a glass ball.
1879 10 2 1 He fixed a carbon-treated cotton thread in a glass bulb, pumped out air, sealed the mouth, and applied current to make it glow. The first electric lamp appeared in human history.
Helen Keller studies very hard.
1880 was born in mbia, Tuscany, a small town in northern Alabama.
When she was one and a half years old, scarlet fever deprived her of her sight and hearing, and then she lost the ability to express herself in words. However, in this dark and lonely world, she actually learned to read and speak, and graduated with honors from Radcliffe College in the United States, becoming a well-known writer and educator proficient in five languages: English, French, German, Latin and Greek.
She traveled all over the United States and the world to raise money for schools for the blind and devoted her life to the welfare and education of the blind. She has won the praise of people all over the world and won many government awards.
Lincoln studied hard at speech.
Lincoln, a bourgeois revolutionary, was the16th president of the United States, and was a world-famous great orator. His success lies in his hard practice of speaking eloquence from his youth, watching and listening more.
When he was young, he worked as a farmer, lumberjack, shop assistant, postman, land surveyor and so on. In order to become a lawyer, he often walks 30 miles to a court to listen to lawyers' arguments and see how they argue and gesture. He imitated politicians and speakers while listening to their impassioned speeches.
He listened to the evangelists who traveled everywhere, waved their arms and shook their voices in the sky. When he came back, he followed their example and practiced his speech repeatedly in the Woods and cornfields. The success of the speech made Lincoln finally become an eloquent lawyer and finally entered politics.
2. "Many things grind" is a famous proverb, which tells people that as long as they treat what they do diligently and seriously, they will certainly do it well. Explain that the success of things lies in being willing to work hard.