9:11
NHD- The Electric Telegraph
Aida & Cristina's project for National History Day on the electric telegraph durin...
published: 16 Mar 2010
Author: LadiiDidas
NHD- The Electric Telegraph
Aida & Cristina's project for National History Day on the electric telegraph during the Civil War.
4:22
Man Behind Morse Code
Beginning in 1836, Samuel FB Morse and Alfred Vail developed an electric telegraph, which ...
published: 04 Jun 2008
Author: fuadsyazwan
Man Behind Morse Code
Beginning in 1836, Samuel FB Morse and Alfred Vail developed an electric telegraph, which sent pulses of electrical current to control an electromagnet that was located at the receiving end of the telegraph wire. The technology available at the time made it impossible to print characters in a readable form, so the inventors had to devise an alternate means of communication. Beginning in 1837, William Cooke and Charles Wheatstone operated electric telegraphs in England, which also controlled electromagnets in the receivers; however, their systems used needle pointers that rotated to indicate the alphabetic characters being sent. In contrast, Morse and Vail's initial telegraph, which first went into operation in 1844, made indentations on a paper tape when an electrical current was transmitted. Morse's original telegraph receiver used a mechanical clockwork to move a paper tape. When an electrical current was received, an electromagnet engaged an armature that pushed a stylus onto the moving paper tape, making an indentation on the tape. When the current was interrupted, the electromagnet retracted the stylus, and that portion of the moving tape remained unmarked. The Morse code was developed so that operators could translate the indentations marked on the paper tape into text messages. In his earliest code, Morse had planned to only transmit numerals, and use a dictionary to look up each word according to the number which had been sent. However, the code was soon expanded <b>...</b>
2:11
Western Electric Telegraph Sounder. .
A short video of my Telegraph Sounder and Key set up. The sounder was manufactured in the ...
published: 22 Mar 2011
Author: teamfab
Western Electric Telegraph Sounder. .
A short video of my Telegraph Sounder and Key set up. The sounder was manufactured in the late 1800's by Western Electric and the key is an early 1940's design. A pre wireless technology used mainly by the 19th century railroad system to transmit information electronically which in turn is the grandfather of today's modern internet. Please forgive my sending, very very rusty!
8:30
Brief History of Latency: Electric Telegraph
Brief look at the history of the electric telegraph - how it came to be, how it was used, ...
published: 15 Sep 2012
Author: Ilya Grigorik
Brief History of Latency: Electric Telegraph
Brief look at the history of the electric telegraph - how it came to be, how it was used, and the early problems it encountered. Namely.. networking congestion, which was caused by routing and queuing delays!
7:16
Types of Electric Telegraphs
Types of Electric TelegraphsJust two centuries ago people used mail as practically the onl...
published: 01 Dec 2010
Author: ChipDipvideo
Types of Electric Telegraphs
Types of Electric TelegraphsJust two centuries ago people used mail as practically the only means of communication. Naturally message delivery was limited by the traveling speed of couriers. Therefore, exchange of information between, for example, countries and continents was very slow. For example, it took at least two weeks to deliver mail from America to Europe. That is why invention of telegraph was the real revolution that transformed many aspects of people's life at that time.The electric telegraph appeared when electrochemical batteries had been invented and spread out, and the electrolysis phenomenon was studied. In 1809 Zemering designed a device that could be used to communicate. He suggested use of gas bubbles that evolved while the current was passing through an electrolyte, such as salt water. Zemering's telegraph consisted of a voltaic column, ie galvanic battery; an alphabet in which letters corresponded to 24 separate wires connected to the voltaic column through a wire, a rope of 24 wound together wires for connection between stations; another alphabet, located at the station receiving messages. There separate wires passed through the bottom of a glass vessel with water. After the receiving station was ready for reception, the sender connected poles of the wires so that the electric current passed in succession through all the letters that the transmitted message consisted of, and the bubbles that were formed when the current passed through the vessel <b>...</b>
1:09
Building a Telegraph : About Telegraphs & Morse Code
The telegraph was first used to carry messages across a long distance. Learn about telegra...
published: 28 Sep 2008
Author: expertvillage
Building a Telegraph : About Telegraphs & Morse Code
The telegraph was first used to carry messages across a long distance. Learn about telegraphs and Morse code with information from a science teacher in this free video on building a telegraph. Expert: Fiona Finke Bio: Fiona Finke is a science teacher who likes to explain how a better understanding of the universe will help us in our daily lives. Filmmaker: Nili Nathan
1:33
Building a Telegraph : Morse Code Basics
Morse code transmits telegraphic information through a standardized sequence of long and s...
published: 28 Sep 2008
Author: expertvillage
Building a Telegraph : Morse Code Basics
Morse code transmits telegraphic information through a standardized sequence of long and short beeps. Learn Morse code basics with tips from a science teacher in this free video on building a telegraph. Expert: Fiona Finke Bio: Fiona Finke is a science teacher who likes to explain how a better understanding of the universe will help us in our daily lives. Filmmaker: Nili Nathan
0:42
Morse Key
Morse code key used in railways telegraph lines. It was made by Walters Electrical in Lond...
published: 03 Mar 2010
Author: FDF38
Morse Key
Morse code key used in railways telegraph lines. It was made by Walters Electrical in London.
1:32
Building a Telegraph : Building a Telegraph: Setting Up Tin & Light Bulb
When building a telegraph, the tin and light bulb need to be placed correctly for it to wo...
published: 28 Sep 2008
Author: expertvillage
Building a Telegraph : Building a Telegraph: Setting Up Tin & Light Bulb
When building a telegraph, the tin and light bulb need to be placed correctly for it to work. Set up tin and the light bulb when building a telegraph with tips from a science teacher in this free video on building a telegraph. Expert: Fiona Finke Bio: Fiona Finke is a science teacher who likes to explain how a better understanding of the universe will help us in our daily lives. Filmmaker: Nili Nathan
1:31
Electrical & Electronics Journals- OMICS Group
It is a semestral, scientific journal that publishes theoretical and empirical peer-review...
published: 13 Jun 2012
Author: OMICSPublishingGroup
Electrical & Electronics Journals- OMICS Group
It is a semestral, scientific journal that publishes theoretical and empirical peer-reviewed articles, which contribute to advance the understanding of phenomena related with all aspects of study and application of electricity, electronics and electromagnetism. It is concerned with the development, and evaluation of integrated systems of people, knowledge, information, equipment, electric telegraph and electrical power supply, as well as the power, electronics, control systems, signal processing power transmission, motor control and telecommunication. www.omicsgroup.org
0:49
telegraph
Follow my tweets at #joester5. Check out other project on my homepage homepage.mac.com...
published: 12 Jan 2011
Author: Joe McKay
telegraph
Follow my tweets at #joester5. Check out other project on my homepage homepage.mac.com
1:03
Building a Telegraph : Building a Telegraph: Saying Hello in Morse Code
In order to say hello in Morse code, it's necessary to spell out each letter individua...
published: 28 Sep 2008
Author: expertvillage
Building a Telegraph : Building a Telegraph: Saying Hello in Morse Code
In order to say hello in Morse code, it's necessary to spell out each letter individually. Say hello in Morse code after building a telegraph with tips from a science teacher in this free video on building a telegraph. Expert: Fiona Finke Bio: Fiona Finke is a science teacher who likes to explain how a better understanding of the universe will help us in our daily lives. Filmmaker: Nili Nathan
1:49
Early Telegraph Unites Domestic Market But Not World Market
The invention by Morse of the early telegraph in the 1840s provided a means of instant com...
published: 03 Sep 2007
Author: danieljbmitchell
Early Telegraph Unites Domestic Market But Not World Market
The invention by Morse of the early telegraph in the 1840s provided a means of instant communication between locations in the US The telegraph thereby united the domestic market. It also allowed coordination of long-distance railroads. However, the telegraph did not reach Europe until a transatlantic cable was laid. Prices information between the US and Europe flowed only by sailing ships with great delay as a result. (The first completely successful cable across the Atlantic did not come until 1866. An earlier cable failed after a short time.)
0:06
Repaired Western Electric telegraph receiver.
This video was uploaded from an Android phone....
published: 08 Jun 2011
Author: Gary B. Watts
Repaired Western Electric telegraph receiver.
This video was uploaded from an Android phone.
Youtube results:
3:28
Telegraph cable across Atlantic
The successful completion of a telegraph cable across the Atlantic in 1866 - after a previ...
published: 15 Jul 2007
Author: danieljbmitchell
Telegraph cable across Atlantic
The successful completion of a telegraph cable across the Atlantic in 1866 - after a previous failure - was a major technological feat. In economic terms, it helped unite international markets just as the domestic telegraph had done for regional markets within the US
10:34
Telephone and Telegraph
THIS FILM IS PUBLIC DOMAIN Shows the similarity of jobs in the telephone industry with tha...
published: 27 Sep 2007
Author: Legend813a
Telephone and Telegraph
THIS FILM IS PUBLIC DOMAIN Shows the similarity of jobs in the telephone industry with that of telegraph work. Describes the many opportunities in these vocations and tells of the skills required to qualify. This entry in the Your Life's Work series of films shows us that men have a fine future in the telephone and telegraph industries -- working anywhere from research to maintenance, and as anything from technicians to engineers to installers to testers to managers to executives. "Girls," on the other hand, can only find positions as sorters or operators, or as members of the "clerical force." "More than a million prominent businessmen began their careers as Western Union messengers!" the narrator exclaims. "Here young men learn the business skills and meet the people who will help advance their careers!" Messenger jobs, as you may have guessed, were not open to the fair sex. TELEPHONES TELEGRAPHY COMMUNICATIONS VOCATIONAL GUIDANCE TRAINING JOBS EMPLOYMENT CAREERS INDUSTRIES LABOR SERVICE OCCUPATIONS
1:01
Telegraph Sounder
Hearing Morse code on my old telegraph sounder Some interesting links: steampunkworkshop.c...
published: 27 Feb 2007
Author: FDF38
Telegraph Sounder
Hearing Morse code on my old telegraph sounder Some interesting links: steampunkworkshop.com artifaxbooks.com mysite.du.edu uv201.com chestofbooks.com