The first steam locomotive that can be put into practical use was invented by Richard Trevithick, a British inventor and mining engineer. Later, he sold the patent to his gold owner Samuel Homefrey. In an early public exhibition, Trevithick's locomotive pulled 10 tons of iron, 5 carriages and 70 people, and ran 15.7 kilometers in 4 hours and 5 minutes.
Second, the telephone.
The telephone has not died out, but has been transformed into our lives in the form of mobile phones. The invention of the Englishman Alexander Graham Bell is undoubtedly one of the greatest inventions of mankind. The telephone was invented before 1876, such as Italian antonio meucci, but Bell was the first person to apply for a telephone patent.
Third, television.
The first publicly displayed television in the world was invented by British inventor John Logie Baird in 1925. 1925 On March 25th, he publicly demonstrated his invention in Searle Foric Department Store in London, and invented the first color TV the following year. Baird's TV can only reach the frame rate of 5 frames per second at first, and then it is increased to 12.5 frames per second. The first transmitted image is a doll head for ventriloquism performance.
Fourth, carbon fiber
The origin of carbon fiber can be traced back to 1860, which was invented and patented by Englishman joseph swan when he made electric lamp filament. It is a fibrous carbon material, black and hard. It is a new material with higher strength than steel, lower density than aluminum, corrosion resistance than stainless steel, high temperature resistance than heat-resistant steel, and conductivity like copper. It has excellent comprehensive properties such as electricity, heat and machinery. Because of its difficult manufacturing process and high practical value, it is praised as "black gold" by the industry.
Verb (abbreviation of verb) stainless steel
19 12 years, British metallurgical expert Harry brill accidentally discovered that Fe-Cr alloy can prevent corrosion. Brill was overjoyed. He continued his research and conducted corrosion tests with water, acid and alkali. The results show that the Fe-Cr alloy produced by his smelting test is not easy to rust at any time.
19 12 years, stainless steel was discovered. 19 15, Brier's stainless steel discovery was patented in the United States; 19 16 This achievement was granted a British patent. Brill is known as "the father of stainless steel".