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Edison invented the electric light, Watt invented the steam engine. Who else knows what sleep invented?
Chinese inventor Bi Sheng -- movable type printing Cai Lun -- papermaking Shen Kuo (Song Dynasty) discovered that the thin thread was tied in the center of the magnetic needle (Compass). Huiyuan -- milk powder, milk pimple, meat floss, ancient alchemist -- gunpowder (the earliest gunpowder formula in the world: burning sulfur, saltpeter and soap horn together
What did Cai Lun, Zhang Heng and watt invent respectively?
They are all wrong. Cai Lun reformed papermaking technology, Zhang Houfeng seismograph, Watt steam engine, full marks
"Since ancient times, heroes are young". Countless examples have proved this. Newton founded calculus at the age of 23. What other examples?
Huo Qubing, 19, became a general of Hussars
Yan Shu, a 7-year-old middle-aged scholar
Wang Bo wrote preface to Tengwang Pavilion at the age of 13
Einstein, 26 years old, established "special relativity"
Darwin, 29, put forward "the theory of biological evolution"
Edison 29, invented the phonograph
Marx 30 pairs, Engels 29 pairs, issued the Communist Manifesto
wait.
RELATED INFORMATIONS
- 1. On Newton calculus
- 2. Qu Yuan, Confucius, Li Bai, Su Shi, Sima Qian, what is their order, and explain the reason
- 3. What is Sima Qian's view on Qu Yuan's life choice in his biographies of Qu Yuan in historical records? Who is more imaginative? Thank you
- 4. The story of Edison's invention
- 5. Famous words of Newton 3.4 sentences
- 6. The story of Edison's childhood The story of Edison's childhood
- 7. How many experiments and materials did Edison use to invent electric lamp?
- 8. How many experiments did Edison go through before he invented the electric light
- 9. How Edison invented the electric light
- 10. Edison asked his assistant to calculate the volume of a light bulb, Edison was a famous inventor. Once, in the process of his busy work, he asked his assistant to help him measure the volume of a light bulb. However, half a day later, his assistant still failed to complete the task. So he went to his assistant's laboratory and found that his assistant was busy studying the shape of the light bulb and carrying out various complicated calculations, A drawing on the desk: divide the light bulb into various shapes and record all kinds of measured data. "I'm almost finished," the assistant said to Edison with pride, "as long as the last set of data is measured!" Edison looked at his assistant with a smile: "you work hard, but can you find a simple and convenient way? I want to know its volume soon!" Students, can you have a more convenient and simple method? (at least 2 methods) please write down your design process and the instrument you need Pay attention to two ways!
- 11. What did ancient scientist Zhang Heng invent? The explanation should be complete
- 12. Brief introduction of Zhang Heng
- 13. The astronomical inventions of Zu Chongzhi, Yixing and Guo Shoujing
- 14. He is not only good at astronomy, but also good at literature. The Chinese scientist whose invention and creation record has lasted for more than 1700 years is () A. Zhang Heng B. Zu Chongzhi C. Seng Yixing D. Guo Shoujing
- 15. Chinese scientists, known as the "father of hybrid rice", are______ ．
- 16. What is the core of Darwin's theory of natural selection
- 17. Why is Yuan Longping called "father of hybrid rice in the world"? Please reply in two sentences, and I will repay you Either of the following is OK!
- 18. A report on Yuan Longping, the father of Hybrid Rice News report on Yuan Longping
- 19. On Mendelian genetics The color of a plant flower is regulated by two pairs of non allelic genes a (a) and B (b). Gene a controls the synthesis of pigment (A: the appearance of pigment, AA and AA have the same effect), and gene B is the modifying gene, which weakens the depth of color (B: the appearance of modifying effect, BB and BB have different effects). F1 is obtained by crossing P1 (AABB, white) with P2 (AABB, red), The results show that F2 is red, pink and white, and their ratio is 3:6:7_________ (2) if haploid breeding was carried out on pink F1 plants, the phenotype and proportion of flower color of the plants were different_________ (3) what are the genotypes of white flower in F2? What is the percentage of homozygote in F2? (4) what is the probability of heterozygote in F2 red flower_______ I hope the experts can help me. I can't understand it all the time
- 20. About 80 words about Edison Born in the United States, Edison was a great inventor. He only stayed in school for three months and always asked questions that had nothing to do with his lessons. Later, his mother took him home and taught him by himself. He found that he was a very good student. He set up his own chemistry laboratory at the age of 10, started his own newspaper at the age of 12, and saved a little boy playing on the track at the age of 16, When he was 22 years old, he went to New York and became an inventor. He never gave up his efforts until he succeeded. He died in 1931 and had 1093 inventions in his life