关于发明物的短文!要创造者,第几年创造的,有什么用途,是什么东西,要英语短文!
来源:学生作业帮 编辑:灵鹊做题网作业帮 分类:英语作业 时间:2024/04/30 02:07:03
关于发明物的短文!
要创造者,第几年创造的,有什么用途,是什么东西,要英语短文!
要创造者,第几年创造的,有什么用途,是什么东西,要英语短文!
Thomas Edison's greatest challenge was the development of a practical incandescent,electric light.Contrary to popular belief,he didn't "invent" the lightbulb,but rather he improved upon a 50-year-old idea.In 1879,using lower current electricity,a small carbonized filament,and an improved vacuum inside the globe,he was able to produce a reliable,long-lasting source of light.The idea of electric lighting was not new,and a number of people had worked on,and even developed forms of electric lighting.But up to that time,nothing had been developed that was remotely practical for home use.Edison's eventual achievement was inventing not just an incandescent electric light,but also an electric lighting system that contained all the elements necessary to make the incandescent light practical,safe,and economical.After one and a half years of work,success was achieved when an incandescent lamp with a filament of carbonized sewing thread burned for thirteen and a half hours.
There are a couple of other interesting things about the invention of the light bulb:While most of the attention was on the discovery of the right kind of filament that would work,Edison actually had to invent a total of seven system elements that were critical to the practical application of electric lights as an alternative to the gas lights that were prevalent in that day.
These were the development of:
the parallel circuit,
a durable light bulb,
an improved dynamo,
the underground conductor network,
the devices for maintaining constant voltage,
safety fuses and insulating materials,and
light sockets with on-off switches.
Before Edison could make his millions,every one of these elements had to be invented and then,through careful trial and error,developed into practical,reproducible components.The first public demonstration of the Thomas Edison's incandescent lighting system was in December 1879,when the Menlo Park laboratory complex was electrically lighted.Edison spent the next several years creating the electric industry.
The modern electric utility industry began in the 1880s.It evolved from gas and electric carbon-arc commercial and street lighting systems.On September 4,1882,the first commercial power station,located on Pearl Street in lower Manhattan,went into operation providing light and electricity power to customers in a one square mile area; the electric age had begun.Thomas Edison's Pearl Street electricity generating station introduced four key elements of a modern electric utility system.It featured reliable central generation,efficient distribution,a successful end use (in 1882,the light bulb),and a competitive price.A model of efficiency for its time,Pearl Street used one-third the fuel of its predecessors,burning about 10 pounds of coal per kilowatt hour,a "heat rate" equivalent of about 138,000 Btu per kilowatt hour.Initially the Pearl Street utility served 59 customers for about 24 cents per kilowatt hour.In the late 1880s,power demand for electric motors brought the industry from mainly nighttime lighting to 24-hour service and dramatically raised electricity demand for transportation and industry needs.By the end of the 1880s,small central stations dotted many U.S.cities; each was limited to a few blocks area because of transmission inefficiencies of direct current (dc).
The success of his electric light brought Thomas Edison to new heights of fame and wealth,as electricity spread around the world.His various electric companies continued to grow until in 1889 they were brought together to form Edison General Electric.Despite the use of Edison in the company title however,he never controlled this company.The tremendous amount of capital needed to develop the incandescent lighting industry had necessitated the involvement of investment bankers such as J.P.Morgan.When Edison General Electric merged with its leading competitor Thompson-Houston in 1892,Edison was dropped from the name,and the company became simply General Electric.
There are a couple of other interesting things about the invention of the light bulb:While most of the attention was on the discovery of the right kind of filament that would work,Edison actually had to invent a total of seven system elements that were critical to the practical application of electric lights as an alternative to the gas lights that were prevalent in that day.
These were the development of:
the parallel circuit,
a durable light bulb,
an improved dynamo,
the underground conductor network,
the devices for maintaining constant voltage,
safety fuses and insulating materials,and
light sockets with on-off switches.
Before Edison could make his millions,every one of these elements had to be invented and then,through careful trial and error,developed into practical,reproducible components.The first public demonstration of the Thomas Edison's incandescent lighting system was in December 1879,when the Menlo Park laboratory complex was electrically lighted.Edison spent the next several years creating the electric industry.
The modern electric utility industry began in the 1880s.It evolved from gas and electric carbon-arc commercial and street lighting systems.On September 4,1882,the first commercial power station,located on Pearl Street in lower Manhattan,went into operation providing light and electricity power to customers in a one square mile area; the electric age had begun.Thomas Edison's Pearl Street electricity generating station introduced four key elements of a modern electric utility system.It featured reliable central generation,efficient distribution,a successful end use (in 1882,the light bulb),and a competitive price.A model of efficiency for its time,Pearl Street used one-third the fuel of its predecessors,burning about 10 pounds of coal per kilowatt hour,a "heat rate" equivalent of about 138,000 Btu per kilowatt hour.Initially the Pearl Street utility served 59 customers for about 24 cents per kilowatt hour.In the late 1880s,power demand for electric motors brought the industry from mainly nighttime lighting to 24-hour service and dramatically raised electricity demand for transportation and industry needs.By the end of the 1880s,small central stations dotted many U.S.cities; each was limited to a few blocks area because of transmission inefficiencies of direct current (dc).
The success of his electric light brought Thomas Edison to new heights of fame and wealth,as electricity spread around the world.His various electric companies continued to grow until in 1889 they were brought together to form Edison General Electric.Despite the use of Edison in the company title however,he never controlled this company.The tremendous amount of capital needed to develop the incandescent lighting industry had necessitated the involvement of investment bankers such as J.P.Morgan.When Edison General Electric merged with its leading competitor Thompson-Houston in 1892,Edison was dropped from the name,and the company became simply General Electric.
关于发明物的短文!要创造者,第几年创造的,有什么用途,是什么东西,要英语短文!
英语翻译求一篇关于发明的短文 不用太长 只要写出发明物的用途和发明者就好 要用英文写!最好有翻译!
2分钟的英语短文(关于外国的创造发明的)
关于喜欢东西的英语小短文!
急求一个英文小短文!要关于发明物的 要简介它的用途 然后在写发明者 务必要用英文!如贝尔发明了电话 那就要先说明电话的用
关于环保、节约粮食、创造的短文
关于计算机的用途外观等用途写篇英语短文
关于明星的短文要英语的
有关火车的发明的英语短文
求英语小短文,第一篇关于旅游的益处.第二篇你认为最有用最伟大的发明是什么,你最想有个什么样的发明及原因不需要太长的,一篇
有关发明的英语小短文
离子交换树脂 是什么东西 有什么构成的?多少钱,什么用途?要什么才能做这个东西