Early Telegraph

Second advance

SECOND ADVANCE

Good morning

The working group consists of:

Mallely Cano        

Yanet Chaverra

Yeison Piedrahíta

Let's talk about the evolution of the telephone

Yeison: Man is a social being, for this reason the communication is an important factor when interacting with others.

Mallely: This need to communicate led to the emergence of systems of symbols that convey ideas, feelings, warnings and more.

Yanet: but not all communication is verbal, even in this the words are unnecessary just gestures. 

For example

(Projection of images about the body language and after mime presentation)

Yeison: communication evolved with humans. Then came the enemy of the communication THE DISTANCE, which prompted the emergence of new forms of communication

Yanet: I have a problem, friends

Mallely: what happened?

Yanet: I need to know, which are the main means of communication?

Yeison: It is easy

Mallely: The Charter was the first to challenge the distance. With the discovery of electricity is developing a faster and sophisticated, It was the telegraph.

Yanet: I have heard that the telegraph had a code called "Morse Code" precursor of remote communication

Yeison: Telegraph? I don’t know. How was the telegraph?

Yanet: Here it is watch it

(Yanet explains the characteristics of the telegraph)

Telegraph used for transmissions in Morse code.

Yanet: However, the phone was a later invention that served to talk and listen, something rustic nothing to do with now!

(Yanet takes a toy from the table and we play with the toy)

Mallely:  If so, around 1879 the phone in the beginning was quite rudimentary, to achieve the user to communicate with someone totally dependent on the operators at the plants, but it was in 1889 when Almon B Strowger patented a system of automatic telephone exchange equipment and the which did not require the presence of operators to get two people to communicate.

Yeison: (Short cord).Then arrive the cordless phone that offers greater freedom and comfort when speaking.

Not to mention that allowed speaking up in the bathroom, what more private place than the bathroom? It is perfect to talk to our girlfriend or boyfriend.

With the development of the radio waves, we came to present. The mobile phone keeps you connected with the world.

However, the distance is always present, because the mobile phone connects people who are far and walks away to people who are close.

Evolution, Alienation and Gossip

Gossip is idle(is a term which generally refers to a lack of motion and/or energy) talk or rumour, especially about the personal or private affairs of others. It is one of the oldest and most common means of sharing facts and views, but also has a reputation for the introduction of errors and variations into the information transmitted. The term can also imply that the news is of personal or trivial nature, as opposed to normal conversation.

The role of mobile telecommunications in the 21st century
Gossip is not a trivial pastime: it is essential to human social, psychological and even physical well-being. The mobile phone, by facilitating therapeutic gossip in an alienating and fragmented modern world, has become a vital 'social lifeline', helping us to re-create the more natural communication patterns of pre-industrial times.
Gossip is the human equivalent of 'social grooming' among primates, which has been shown to stimulate production of endorphins, relieving stress and boosting the immune system. Two-thirds of all human conversation is gossip, because this 'vocal grooming' is essential to our social, psychological and physical well-being. Mobiles facilitate gossip. Mobiles have increased and enhanced this vital therapeutic activity, by allowing us to gossip 'anytime, anyplace, anywhere' and to text as well as talk. Mobile gossip is an effective and important new stress-buster.

Morse telegraphs

In the United States, the telegraph was developed by Samuel Morse and Alfred Vail. Samuel F. B. Morse independently developed an electrical telegraph in 1836, an alternative design that was capable of transmitting over long distances using poor quality wire. His assistant, Alfred Vail developed the Morse code signaling alphabet with Morse.

On 6 January 1838 Morse first successfully tested the device at the Speedwell Ironworks near Morristown, New Jersey, and on 8 February he publicly demonstrated it to a scientific committee at the Franklin Institute in Philadelphia, Pennsylvania.

In 1843 the U.S. Congress appropriated $30,000 to fund an experimental telegraph line from Washington, D.C. to Baltimore. By 1 May 1844, the line had been completed from the U.S. Capitol to Annapolis Junction in Maryland. That day the Whig Party nominated Henry Clay at its national convention in Baltimore. News of the nomination was hand-carried by railroad to Annapolis Junction where Vail wired it to Morse in the Capitol. On 24 May 1844, after the line was completed, Morse made the first public demonstration of his telegraph by sending a message from the Supreme Court Chamber in the U.S. Capitol in Washington, D.C. to the B&O Railroad "outer depot" (now the B&O Railroad Museum) in Baltimore. The famous message was: What hath God wrought (from the Biblical book of Numbers 23:23: Surely there is no enchantment against Jacob, neither is there any divination against Israel: according to this time it shall be said of Jacob and of Israel, What hath God wrought!).

Electrical telegraph

An electrical telegraph is a telegraph that uses electrical signals, usually conveyed viatelecommunication lines or radio. The electromagnetic telegraph is a device for human-to-human transmission of coded text messages.

The electrical telegraph, or more commonly just 'telegraph', superseded optical semaphore telegraph systems, such as those designed by Claude Chappe for the French military, and Friedrich Clemens Gerke for the Prussian military, thus becoming the first form of electrical telecommunications. In a matter of decades after their creation, electrical telegraph networks permitted people and commerce to almost instantly transmit messages across both continents and oceans, with widespread social and economic impacts.

History

Early works and messages

From early studies of electricity, electrical phenomena were known to travel with great speed, and many experimenters worked on the application of electricity to communications at a distance.

All the known effects of electricity - such as sparks, electrostatic attraction, chemical changes,electric shocks, and in later, more advanced studies, electromagnetism - were applied by various people to the problems of detecting controlled transmissions of electricity at various distances.

In 1746 the French scientist and abbé Jean-Antoine Nollet, gathered about two hundred monksinto (Don't knows what it means teacher) a circle about a mile (1.6 km) in circumference, with pieces of iron wire connecting them. He then discharged a battery of Leyden jars (device that "stores" static electricity between two electrodes on the inside and outside of a jar) through the human chain and observed that each man reacted at substantially the same time to the electric shock, showing that the speed of electricity's propagation was very high.

 Telegraphs employing electrostatic attraction were the basis of early experiments in electrical telegraphy in Europe, but were abandoned as being impractical and were never developed into a useful communication system.

In 1800 Alessandro Volta invented the Voltaic Pile, allowing for a continuous current of electricity for experimentation. 

Another very early experiment in electrical telegraphy was an electrochemical telegraph created by the German physician, anatomist and inventor Samuel Thomas von Sömmering in 1809, based on an earlier, less robust design of 1804 by Catalan polymath (is a person whose expertise spans a significant number of different subject areas) and scientist Francisco Salvá i Campillo. Both their designs employed multiple wires (up to 35) in order to visually represent almost all Latin letters and numerals. The principal disadvantage to the system was its prohibitive cost, due to having to manufacture and string-up the multiple wire circuits it employed, as opposed to the single wire (with ground return) used by later telegraphs.

In 1816, Francis Ronalds set up a primitive telegraph. He ran eight miles (13 km) of cable (encased in glass tubing) through his back garden suspending it from two wooden lattices. and succeeded in getting an electrical signal along the full length using static high voltage electricity. At both ends there were clockwork operated dials with numbers and letters of the alphabet.

Hans Christian Ørsted discovered in 1820 that an electric current produces a magnetic field which will deflect a compass needle. In the same year Johann Schweigger invented the galvanometer, with a coil of wire around a compass, which could be used as a sensitive indicator for an electric current.

In 1825 William Sturgeon invented the electromagnet, with a single winding of uninsulated wire on a piece of varnished iron, which increased the magnetic force produced by electric current. Joseph Henry improved it in 1828 by placing several windings of insulated wire around the bar, creating a much more powerful electromagnet which could operate a telegraph through the high resistance of long telegraph wires.