Alexander Graham Bell, Scottish-born American inventor, scientist, and teacher of the deaf whose foremost accomplishments were the invention of the telephone () and refinement of the phonograph (). He also worked on use of light to transmit sound, development of . 7/3/ · The telegraf dan telefon kedua-dua sistem elektrik berasaskan dawai, dan kejayaan Alexander Graham Bell dengan telefon datang sebagai hasil langsung daripada usahanya untuk meningkatkan telegraf. Apabila dia mula bereksperimen dengan isyarat elektrik, telegraf telah menjadi cara ditubuhkan komunikasi untuk kira-kira 30 tahun. Walaupun sistem yang sangat berjaya, telegraf . 11/29/ · Alexander Graham Bell was born in Edinburgh, Scotland, on March 3, Bell’s father was a professor of speech elocution at the University of .

Bell was born on March 3, , in Edinburgh, Scotland. After attending school in Scotland and London, the year-old immigrated to Canada with his parents in Italian inventor and engineer Guglielmo Marconi developed, demonstrated and marketed the first successful long-distance wireless telegraph and in broadcast the first transatlantic radio signal.

On September 1, , a Boston woman named Emma Nutt made history—and all she had to do was pick up the phone. Her soothing voice helped usher in a new era of telecommunications and In his 84 years, Thomas Edison acquired a record number of 1, patents singly or jointly and was the driving force behind such innovations as the phonograph, the incandescent light bulb and one of the earliest motion picture cameras.

He was an impassioned champion of a strong federal government, and played a key role in defending Serbian-American engineer and physicist Nikola Tesla made dozens of breakthroughs in the production, transmission and application of electric power.

He invented the first alternating current AC motor and developed AC generation and transmission technology.

In , Connecticut-born gun manufacturer Samuel Colt received a U. Colt founded a company to manufacture his revolving-cylinder pistol; however, sales were slow and the By turns charismatic and ruthless, brilliant and power hungry, diplomatic and By Bell and his colleagues his cousin Chichester A.

Bell and the inventor Charles Sumner Tainter had a design fit for commercial use that featured a removable cardboard cylinder coated with mineral wax.

They called their device the Graphophone and applied for patents, which were granted in The group formed the Volta Graphophone Company to produce their invention.

Then in they sold their patents to the American Graphophone Company, which later evolved into the Columbia Phonograph Company. Bell used his proceeds from the sale to endow the Volta Laboratory.

Bell undertook two other noteworthy research projects at the Volta Laboratory. In he began research on using light as a means to transmit sound.

In British scientist Willoughby Smith discovered that the element selenium , a semiconductor , varied its electrical resistance with the intensity of incident light.

Bell sought to use this property to develop the photophone, an invention he regarded as at least equal to his telephone.

He was able to demonstrate that the photophone was technologically feasible , but it did not develop into a commercially viable product.

Nevertheless, it contributed to research into the photovoltaic effect that had practical applications later in the 20th century.

The origin of this effort was the shooting of U. President James A. Garfield in July Bell decided that a promising approach was to use an induction balance, a by-product of his research on canceling out electrical interference on telephone wires.

Bell determined that a properly configured induction balance would emit a tone when a metal object was brought into proximity with it.

Surgeons adopted it, and it was credited with saving lives during the Boer War — and World War I — Pada tahun berikutnya, perkhidmatan telefon antara Boston dan Providence, Rhode Island, telah ditubuhkan.

Perkhidmatan Transcontinental bermula pada tahun Bell diasaskan beliau Bell Telephone Company pada tahun Sebagai industri yang berkembang pesat, Bell segera membeli daripada pesaing.

Selepas beberapa siri penggabungan, American Telephone and Telegraph Co. Pertukaran telefon biasa pertama telah ditubuhkan di New Haven, Connecticut, pada tahun Pada tahun , Kansas City undertaker Almon B.

Strowger mencipta satu suis yang boleh menyambung satu baris dengan mana-mana baris dengan menggunakan geganti dan slider.

The Strowger suis, kerana ia datang yang dikenali, masih digunakan di beberapa pejabat telefon lebih tahun kemudian.

Strowger dikeluarkan paten pada 11 Mac , untuk pertukaran telefon automatik pertama. Pertukaran pertama menggunakan suis Strowger itu dibuka di La Porte, Indiana, pada tahun Pada mulanya, pelanggan mempunyai butang pada telefon mereka untuk menghasilkan jumlah yang diperlukan denyutan dengan mengetik.

Pada tahun , Philadelphia merupakan kawasan utama terakhir untuk melepaskan perkhidmatan dual putar dan butang.

Pada tahun , telefon dikendalikan dengan duit syiling yang telah dipatenkan oleh William Gray of Hartford, Connecticut. As a wedding present, Bell gave his bride all but ten of his 1, shares in his promising new telephone company.

The couple would go on to have four children, daughters Elsie, Marian, and two sons who died in infancy.

One of his students was the young Helen Keller. Both the telegraph and the telephone work by transmitting electrical signals over wires, and Bell's success with the telephone came as a direct result of his attempts to improve the telegraph.

When he began experimenting with electrical signals, the telegraph had been an established means of communication for some 30 years.

Although a highly successful system, the telegraph was basically limited to receiving and sending one message at a time.

Bell's extensive knowledge of the nature of sound enabled him to imagine the possibility of transmitting multiple messages over the same wire at the same time.

Although the idea of a "multiple telegraph" had been in existence for some time, no one had been able to perfect one.

Watson, a skilled electrician, to keep Bell on track. By October , Bell's research had progressed to the extent that he could inform his future father-in-law about the possibility of a multiple telegraph.

Hubbard, who had long resented the absolute control then exerted by the Western Union Telegraph Company, instantly saw the potential for breaking such a monopoly and gave Bell the financial backing he needed.

Bell proceeded with his work on the multiple telegraph, but he did not tell Hubbard that he and Watson were also developing a device that would transmit speech electrically.

Keluarganya telah lama berkecimpung dengan mengajar "elocution" : datuknya, Alexander Bell, di London , bapa saudaranya di Dublin , dan bapanya, di Edinburgh, kesemuanya "elocutionists".

Bapanya menerbitkan pelbagai karya berkenaan tajuk tersebut, beberapa darinya masih dikenali ramai, terutama The Standard Elocutionist [8] Mackay , , yang muncul di Edinburgh pada The Standard Elocutionist muncul dalam edisi British dan dijual lebih suku juta di Amerika Syarikat sahaja.

Dalam treatise ini, bapanya menjelaskan kaedahnya mengajar orang yang bisu dan pekak "deaf-mute" sebagaimana mereka dikenali semasa itu untuk menghasilkan perkataan dan membaca pergerakan bibir orang lain bagi menafsir erti.

Bapa Aleck mengajar dia dan adiknya bukan sahaja menulis "Visible Speech" tetapi turut mengenal pasti sebarang simbol dan bunyi yang mengiringinya.

Sebagai seorang kanak-kanak, Bell, seperti abang-abangnya, dia telah menerima pembelajaran di rumah oleh ayahnya.

Fahey, Jr. Ruang nama Halaman Pembicaraan. Tampilan Baca Sunting Sunting sumber Versi terdahulu.

meldet Alexander. In der Folge entstand die Bell Telephone Company, die sich später zum weltweit​. Die Erfindung des Telefons geht auf mehrere Personen zurück. Wer hierbei als der wahre Im Telefon von Reis erfolgte die Wandlung von Tönen zu Stromänderungen mittels des Prinzips des Alexander Graham Bell kam im Laufe dieser Ereignisse in den Besitz von Meuccis Materialien und Unterlagen. Als Meucci Mitte des Jahrhunderts wird das Telefon gleich vierfach erfunden. Am Ende aber kassiert Alexander Graham Bell den Ruhm. His best friend was Ben Herdman, a neighbour whose family operated a flour mill. Bell was connected with the eugenics movement in the United States. In September the Bell family vacationed in Nova Scotia, Canada, and immediately fell in love with the climate and landscape. Mabel Bell: Alexander's Silent Partner. Bell is to be congratulated upon being able to Strategiespiele Online Spielen the recognition of his fellow citizens and fellow countrymen".

Probleme ausbezahlt Graham Bell Telefon. - Bell bedient sich wohl auch bei Antonio Meucci

Aufgrund von Verbrennungen durch einen Kesselzerknall war Meucci zu dreimonatiger Krankenruhe genötigt, was zu seiner Entlassung führte und seine Frau dazu zwang, einige seiner Arbeitsmodelle zu verkaufen, darunter das eines Psc Guthaben Abfragen.