作业帮电话的由来（英语）电话的由来 （请用英语给我回答） 有追加分50
来源：学生作业帮 编辑：作业帮 分类：英语作业 时间：2024/05/21 16:33:02
电话的由来（英语）
电话的由来 （请用英语给我回答）
有追加分50
电话的由来 （请用英语给我回答）
有追加分50
The patent for the telephone was granted to Alexander Graham Bell on March 7th 1876,at that time he resided in Salem,Massachusetts.
Alexander Graham Bell invented his telephone as a result of his research into improving the telegraph system.He was experimenting into improving the system so multiple telegraphs could be sent at the same time (his theory "harmonic telegraph" was based on the principle that several notes could be sent simultaneously along the same wire if the different signals differed in pitch).However at the same time he was working on a novel idea that speech could be transmited electronically as he discovered by accident that the sound of a spring being twanged could be heard over his harmonic telegraph system.Almost a year later in March 1876 Bell uttered the first famous words into the device to his assistant in the next room "Mr.Watson,come here I want to see you".
On June 2,1875,Alexander Graham Bell while experimenting with his technique called "harmonic telegraph" discovered he could hear sound over a wire.The sound was that of a twanging clock spring.
Educated to pursue a career in the same specialty,his knowledge of the nature of sound led him not only to teach the deaf,but also to invent the telephone.As President James Garfield lay dying of an assassin's bullet in 1881,Bell hurriedly invented a metal detector in an unsuccessful attempt to locate the fatal slug.
The first exchange outside the United States was built in London in 1879.The exchange involved a group of operators working at a large switchboard.The operators would answer an incoming telephone call and connect it manually to the party being called.The first automatic telephone exchange was patented by Almon Strowger of Kansas City in 1891 and installed in 1892,but manual switchboards remained in common use until the middle of the twentieth century.
Alexander Graham Bell invented his telephone as a result of his research into improving the telegraph system.He was experimenting into improving the system so multiple telegraphs could be sent at the same time (his theory "harmonic telegraph" was based on the principle that several notes could be sent simultaneously along the same wire if the different signals differed in pitch).However at the same time he was working on a novel idea that speech could be transmited electronically as he discovered by accident that the sound of a spring being twanged could be heard over his harmonic telegraph system.Almost a year later in March 1876 Bell uttered the first famous words into the device to his assistant in the next room "Mr.Watson,come here I want to see you".
On June 2,1875,Alexander Graham Bell while experimenting with his technique called "harmonic telegraph" discovered he could hear sound over a wire.The sound was that of a twanging clock spring.
Educated to pursue a career in the same specialty,his knowledge of the nature of sound led him not only to teach the deaf,but also to invent the telephone.As President James Garfield lay dying of an assassin's bullet in 1881,Bell hurriedly invented a metal detector in an unsuccessful attempt to locate the fatal slug.
The first exchange outside the United States was built in London in 1879.The exchange involved a group of operators working at a large switchboard.The operators would answer an incoming telephone call and connect it manually to the party being called.The first automatic telephone exchange was patented by Almon Strowger of Kansas City in 1891 and installed in 1892,but manual switchboards remained in common use until the middle of the twentieth century.