Skip to main content

History of telecommunications


The history of telecommunications, after the use of primitive means, begins with the first organized postal services, the development of the telegraph, telephone, wireless and digital communications. This is undoubtedly one of the areas where technology has evolved the fastest.

Origin of telecommunications: Telecom Tower
The earliest telecommunication processes were the smoke signals used by Native American peoples in North and South America, and the drums used by the peoples of Africa, New Guinea, and South America. These signals made it possible to transmit sometimes complex information.
The Yagans, for example, were using smoke signals to indicate beached whales, so the majority can take the meat from the carcass before it decomposes. Perhaps they were using these signals for other purposes, so it is possible that Fernand de Magellan saw one of these fires when he crossed Patagonia, which inspired the name of Tierra del Fuego.

Transmission Tower

The ancient Greeks had also dreamed of information transmission systems at long distances by torches. Aeschylus describes such a system at the beginning of his play Agamemnon, in which a light signal is transmitted over a single night from mountain to mountain from Troy in what is now Turkey, to Argos in the Peloponnese.

At the xvith century, in Japan, the governor Takeda Shingen instituted military communications technology over long distances using signals by fire.
In the Middle Ages, towers placed on the summits allowed to transmit the orders and strategic information, but the information was limited to the equivalent of a modern bit like: "the enemy is in sight". An example is the transmission of Plymouth to London from the arrival of the "invincible armada".
The squadron of warships on the sea communicated, the xviii th  century by a hoisted system of digital pavilions, whose meaning was in a codebook giving meaning to each number (see International Code of maritime signals ).

In 1782, the monk Cistercian Dom Gauthey communicates to the Academy of Sciences a memoir on the remote communication by acoustic pipes. It launches in vain for a subscription, supported by various scholars of the time including Benjamin Franklin, to finance his experiments. The English utilitarian philosopher Jeremy Bentham, in his panoptic prison projects (1787, 1791, 1811) imagines the use of conversation hints for internal communication. In 1793, he presented a proposal for the administrative and military use of conversational pipes.
Labels:

Comments

Post a Comment

Popular posts from this blog

Techlok Seal Ring

Standard molded seals Depending on the shape and application of the seals, these are made by injection or compression, some are bonded. Seals-Ring-Techne O-rings: From Ø 0.4 to more than 2000 mm, we deliver more than 3,000,000 O-rings every year. More than 10 000 references in stock, a hundred of mixtures possible according to your applications and homologations requested. See  techlok seal ring for more information Among our materials in stock: NBR ACS, EPDM ACS, WRAS, W270, 1935-2004, silicones ACS WAS W270 USP6. Other approvals are available upon request. We also manufacture your machined O-rings made of PTFE, POM, PA, and Polyurethane. On request, our O-rings will answer your food approvals (FDA, 1935/2004), gas, drinking water, medical. For the most aggressive chemical environments such as chemistry and perfumery, Chromex offers its O-ring models coated in FEP or PFA. Our O-rings are also available as assortment boxes. We can also offer rolls of NBR, EPDM, FKM,...
Post a Comment
Read more

pipe scaffolding

Scaffolding / Steel Pipe Building Materials Galvanized Steel Tubes Hot dip galvanized Q235 scaffolding pipe is the main part of pipe and coupler scaffolding systems. The treatment of hot-dip galvanized surfaces has provided excellent appearance with sufficient durability in applications where exposure to salty air or long-term weather is unavoidable. Source: Technocraft Industries Packaging We could offer the packing according to the customer's requirements. The most popular packaging is 61pcs / bundle, 37pcs / bundle, 100pcs / bundle. Fastener type Steel pipe scaffolding type There are usually two types, one with an outer diameter of 48 mm and a wall thickness of 3.5 mm; the other has an outer diameter of 51 mm and a wall thickness of 3 mm; Depending on its position and function, it can be divided into a vertical pole, a horizontal pole, and a sweep rod. According to the "Technical safety specifications for scaffolding steel pipe fasteners for building ...
Post a Comment
Read more

How Reliable Scaffolds Provides Safety to Workers

The type of scaffold that provides the best support for workers is largely up to the task at hand. There are several types of scaffolding that you can choose from to choose the type of scaffolding that will help make your job safer. Scaffolding provides a reliable support to the worker while performing a much higher level of work than the ground. They may be an immovable support structure that remains in place unless disarmed and installed in another location. Other types of footrests have wheeled rollers that allow the operator to move the footrests in certain areas without having to move them to where they are needed to dismantle and disassemble the footrests and continue the work. The cable helps to move the platform from front to back or raise or lower the footrest to a new position, and has fixtures that move the footrest to the desired position and lock the footrest in place. The tubes scaffolding is made of various kinds of materials. Aluminum is a very popular material in ma...
Post a Comment
Read more