1. Sentences describing science and technology

1. Science is the common wealth of mankind, and the task of real scientists is to enrich this treasure house of knowledge that can benefit all mankind.

2. Before you want to climb to the top of science, you must thoroughly study the preliminary knowledge of science. Never take action on the next thing before you fully understand the previous thing.

3. There is no smooth road in science. Only those who are not afraid of hard work and climb the steep mountain road can hope to reach the glorious peak.

4. The eternity of science lies in its unremitting pursuit. Science is inexhaustible in terms of its capacity, and is always unattainable in terms of its goals.

5. Science is a crutch in the hands of pioneers.

6. Science is a beautiful and beautiful scenery that makes people linger.

7. Science has no national boundaries, because it is a wealth that belongs to all mankind and a torch that illuminates the world; but scholars belong to the motherland.

8. Science is the foundation of all life, like a key, opening up the way forward for us.

9. Learn to do the rough work in science. Study facts, compare facts, and accumulate facts.

10. It is not a bad thing, let alone a shame, for a person to take detours and make mistakes on the road of scientific exploration. One must have the courage to admit and correct mistakes in practice.

11. A scientist should consider the comments of later generations, not the insults or praises at the time.

12. Don’t lose your ability to feel life, beauty, and poetry because you have been immersed in science for a long time.

13. Science is the best way to make the human spirit brave.

14. Science has as many enemies as friends.

15. There is no smooth road in science. Only those who are not afraid of hardships and climb along the steep mountain road can hope to reach the glorious peak.

16. Difficulties can only scare cowards and lazy people, but victory always belongs to those who dare to climb the peak of science.

17. Although science has no national boundaries, scientists should devote all their strength to their motherland.

18. Science is the key to wisdom and leads you to the palace of knowledge.

19. In history, any major scientific invention is due to the inventor giving full play to this original spirit.

20. Science is the father of productivity.

21. Science is a good medicine for ignorance. 2. Good sentences to encourage scientific inventions

Good sentences to encourage scientific inventions

There are no waste products in this world, they are all treasures that have been misplaced. There are also many things in life that are regarded as waste. You might as well try to "turn waste into treasure". ,

A large part of the reason why many successful people have achieved such brilliant results is that they like to do hands-on operations.

For example, Nobel, a famous scientist, inventor and entrepreneur, has been engaged in the research, production, production and sales of explosives. He diligently read various books to find ways to make gunpowder. Later, after preparing the raw materials, I experimented and improved over and over again at home, and finally found the best mixing ratio, which significantly enhanced the power of gunpowder. 3. Here are two famous quotes about scientific inventions

1. There is no smooth road in science. Only those who are not afraid of hard work and climb the steep mountain road can hope to reach the glorious peak. ——Marx

2. Once society has a technical need, this need will push science forward more than ten universities. ——Engels

3. Success = hard work + correct methods + less empty talk. ——Einstein

4. Successful scientists are often people with a wide range of interests. Their originality may come from their erudition. Diversity will give people fresh perspectives, while delving into a narrow field for too long can easily make people stupid. ——Beveridge

5. Every great achievement in science is based on bold fantasy. ——Dewey 4. Write a short scientific article to introduce some scientific knowledge

Memory has always been considered to be a unique function of living things, especially higher organisms.

However, materials scientists have discovered in research that some metals also have memory functions. In the 1960s, researchers at the U.S. Naval Ordnance Laboratory made a nickel-titanium alloy wire using 55% nickel and 45% titanium.

They wound this nickel-titanium alloy wire into a spiral coil, heated it to 150°C, then cooled and straightened it. When the alloy wire was heated to 95°C again, an incredible scene occurred - the metal wire automatically curled into the shape of the original spiral coil.

The researchers cooled and straightened it again. Unexpectedly, when it was heated to the same temperature, it returned to its original shape. Repeated experiments have always proven successful.

Later, scientists discovered that some other alloys, such as copper-zinc-aluminum alloys, copper-nickel-aluminum alloys, iron-platinum alloys, etc., also have this function of memory shape. They called this type of alloys "shape memory" alloy". This alloy with shape memory function can be widely used in satellite antennas, aircraft hydraulic systems, pipe riveting, medical equipment and many other fields.

For example, the antennas made with them are usually very small when folded. When the spacecraft is in the sky, under the sunlight, the antennas will unfold into a hemisphere with a diameter of several meters; artificial antennas made with them will The bone tie rod can rely on human body temperature to fix broken bones together, greatly speeding up the healing of fractures. Agree 0 | Comment. 5. The shorter the story of a scientist’s invention, the better

Copier

At first, the paraffin paper invented by Edison was only widely used in packaging materials for food and candy. Later, he tried to Carve the outline of the text on the wax paper to form a paraffin engraving paper plate. Place white paper under the paper plate, and then roll the ink roller from the engraved paraffin paper. A wonderful thing happened. Clear words appeared on the white paper. handwriting. After many improvements and experiments, in 1976, Edison began mass production of the copier he invented. All of a sudden, agencies, schools, institutions, and groups all used this wax paper mimeograph machine. Due to the popularity of Edison's copiers and their popularity around the world, Edison deeply realized that he should invent something that people generally and deeply need.

Synchronous telegraph machine

Early telegraph machines could only transmit one message at a time and could not exchange signals at the same time. Since Edison himself was a telegraph technician, he began to improve the traditional telegraph machine. , created a dual transmitter, and in 1974 developed a quadruple transmitter, also known as a synchronous transmitter. At a time when radio had not yet been developed, the synchronized transmitter was a major breakthrough.

Improved Telephone

We all know that the modern telephone was invented by Bell. In fact, the fact that the telephone can receive and speak clearly is due to Edison's experiments again and again. , broke through the traditional stereotypes and created a toner microphone, which improved the sensitivity, volume, and receiving distance of the phone in one fell swoop. Otherwise, we would still often say: Hello! Hello! I can't hear it, I can't hear it clearly.

The birth of the phonograph

One night in December 1877, the staff of the Mengluoyuan Laboratory shivered slightly, not because of the cold, but because they heard the most important sound in the history of mankind. The first recording: "Ma Li has a little sheep. Its fur is as white as snow. No matter where Ma Li goes, the little sheep is always by her side... This great invention does not need much introduction by Teacher Xiao Guan. Everyone You can understand how widely it is used. The French government even awarded Edison the title of Sir! Later, Edison improved the phonograph many times until he changed the drum type to the bakelite turntable type. It’s only two years, but it has been decades of continuous improvement!

Messenger of Light

In the early 19th century, people began to use gas lamps (gas lamps), but the gas was supplied through pipes. Once the air leaks or is blocked, it is very easy to cause trouble. People are very eager to reform lighting. In fact, Edison set an impossible task for himself: in addition to improving lighting, he also needs to create a power supply system. .

So he and his partners at Mengluoyuan worked tirelessly on more than 1,600 experiments on heat-resistant materials and more than 600 kinds of plant fibers to create the first carbon filament light bulb that could be used at once. It burned for 45 hours. Later, he continued to improve the manufacturing method on this basis, and finally launched a bamboo filament light bulb that can burn for 1,200 hours. 6. Do you know which scientific inventions or discoveries are inspired by small things in daily life?

1. The eraser on the pencil tip. When a painter is drawing with a pencil, he always looks for the eraser from time to time. It feels very troublesome, so he tries to tie the eraser to the pencil tip, and finally The current pencil with eraser was formed. 2. Watt’s invention of the steam engine was most typically inspired by stories about daily life. 3. Archimedes discovered the law of buoyancy when he was taking a bath. 4. 1850 In order to study the rotation of the earth, the French physicist Léon Foucault first discovered the high-speed rotating rotor. Due to the inertial effect, its rotation axis always points in a fixed direction, and finally invented the gyroscope. .Similarly, Zhang Sanfeng's Tai Chi Quanquan was also inspired by the stable rotation of the top.