Ancient Classical and Dark Ages 500 000 BC 900 AD Middle Ages Renaissance and The Enlightenment 9001800 The Industrial Age1800s The Modern Ages19001960 The Information Age1960Present ID: 560113
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History Of CommunicationSlide2
Ancient, Classical and Dark Ages
(500 000 B.C- 900 AD)
Middle Ages, Renaissance and The Enlightenment (900-1800)
The Industrial Age(1800s)
The Modern Ages(1900-1960)The Information Age(1960-Present)Slide3
Ancient, Classical and Dark Ages
(500 000 B.C- 900 AD)
The Invention of The WheelSlide4
What is the Wheel?
A wheel is a circular component that is intended to rotate on an axial bearing. It is one of the main components needed for the wheel and axle which is also part of the six simple machines. Wheels allow heavy objects to be moved easily allowing movement or transportation while supporting a luggage, or performing labor in machines.Common examples are found in transport system. A wheel greatly reduces friction by rolling together with the use of axles. In order for wheels to rotate, a moment needs to be applied to the wheel about its axis, either by way of gravity, or by the application of another external forceSlide5
When was the Wheel InventedAs important as the wheel is as an invention, we don't know who exactly made the first wheel. The question of which culture originally invented the wheeled vehicle remains unresolved and under debate
Development of a Functional Wheel
This is Heavy
The Sledge
Log RollerInventing a Primitive AxleFirst CartsFixed Axles Make a Functional & Successful WheelSlide6
Humans realized that there was a way heavy objects could be moved easier if something round, for example a fallen tree log, was placed under it and the object rolled over it.
The Sledge
Humans also realized a way to move heavy objects, with an invention archeologists call the sledge. Logs or sticks were placed under an object and used to drag the heavy object, like a sled and a wedge put together.
This is Heavy Slide7
Humans thought to use the round logs and a sledge together. They used several logs or rollers in a row, dragging the sledge over one roller to the next.
Inventing a Primitive Axle
Log Roller
With time the sledges started to wear grooves into the rollers and humans noticed that the grooved rollers actually worked better by carrying the object further. This was simple physics, if the grooves had a smaller circumference than the unworn parts of the roller which was dragging the sledge in the grooves required less energy to create a turning motion but created a greater distance covered when the larger part of the log roller turned. The log roller was becoming a wheel and humans cut away the wood between the two inner grooves to create what is called an axle.Slide8
First Carts
Wooden pegs were used to fix the sledge, so that when it rested on the rollers it would not move but it still allowed the axle to turn in-between the pegs which led to the axle and wheels creating all the movement. These were the first carts. Improvements to the cart were made. The pegs were replaced with holes carved into the cart frame, the axle was placed through the hole. This made it necessary that the larger wheels and thinner axle had to be separate pieces. The wheels were attached to both sides of the axle.
Fixed Axles Make a Functional & Successful Wheel
Next, the fixed axle was invented, where the axle does not turn but is solidly attached to the cart frame. Only the wheels did the revolving by being fitted onto the axle in a way that allowed the wheels to rotate. Fixed axles made for stable carts that could turn corners better. By this time the wheel was considered a complete invention.Slide9
How Wheels Changed the world
The wheel made the transportation of goods much faster and more efficient, especially when it was fixed to horse-drawn chariots and carts. However, if it had been used only for transportation, the wheel wouldn't have been as much of a world-changer as it was. In fact, a lack of quality roads limited its usefulness in this regard for thousands of years.
A wheel can be used for a lot of things other than sticking them on a cart to carry grain, though. Tens of thousands of other inventions require wheels to function, from water wheels that power mills to gears and cogs that allowed even ancient cultures to create complex machines. Cranks and pulleys need wheels to work. A huge amount of modern technology still depends on the wheel, like centrifuges used in chemistry and medical research, electric motors and combustion engines, jet engines, power plants and countless others.Slide10
Middle Ages, Renaissance and The Enlightenment (900-1800)
The First Network of Communication TowersSlide11
History of Telecommunication
Early telecommunications included smoke signals and drums. Talking drums were used by natives in Africa, New Guinea and South America, and smoke signals in North America and China. This was used to do more than merely announce the presence of a military camp
In 1792, a French engineer, Claude
Chappe
built the first visual telegraphy (or semaphore) system between Lille and Paris. This was followed by a line from Strasbourg to Paris. In 1794, a Swedish engineer, Abraham Edelcrantz built a quite different system from Stockholm to Drottningholm. As opposed to Chappe's system which involved pulleys rotating beams of wood, Edelcrantz's system relied only upon shutters and was therefore faster.UNTIL 1792Slide12
Functions of Towers.Tower has changed the world because it can be used for various different types of Communication.
It could be used for communication Enhancement and Transport Support Slide13
Communication enhancement
In history, simple towers like lighthouses, bell towers, clock towers, signal towers and minarets were used to communicate information over greater distances. In more recent years, radio masts and cell phone towers facilitate communication by expanding the range of the transmitter.
Transportation support
Towers can also be used to support bridges, and can reach heights that rival some of the tallest buildings above-water. Their use is most prevalent in suspension bridges and cable-stayed bridges. The use of the pylon, a simple tower structure, has also helped to build railroad bridges, mass-transit systems, and harbors.
Control towers are used to give visibility to help direct aviation traffic.Slide14
The Industrial Age(1800s)The Invention of TelephoneSlide15
Invention of TelephoneA
telephone, or phone, is a telecommunications device that permits two or more users to conduct a conversation when they are not in the same vicinity of each other to be heard directly. It converts sound, typically and most efficiently the human voice, into electronic signals suitable for transmission via cables or other transmission media over long distances, and replays such signals simultaneously in audible form to its user.
First patented in 1876 by Alexander Graham Bell and further developed by many others, the telephone was the first device in history that enabled people to talk directly with each other across large distances. Telephones rapidly became indispensable to businesses, government, and households, and are today some of the most widely used small appliances.Slide16
How it Changed CommunicationIt made communication between people because people didn't have to be there physical but you could still have a conversation with them.
It made Communication much easier and cheaper.Slide17
The Modern Ages(1900-1960)Invention of TelevisionSlide18
Invention of TelevisionTelevision
, or TV for short, is a telecommunication medium for transmitting and receiving moving images that can be monochrome (black-and-white) or colored, with or without accompanying sound.
J
ohn
Logie Baird was a British scientist of Scottish nationality, engineer, innovator and inventor of the world's first television;the first publicly demonstrated colour television system; and the first purely electronic colour television picture tube. There are three types of television:Electromechanical televisionElectronic televisionColor televisionSlide19
How Invention of Television Changed Communication Television was a faster and easier method of spreading information, entertainment, and advertising, than the previous media such as newspapers and motion pictures.
It also changed the way people talked in a positive way and a negative way.Negative Way:Coarse Language is frequently used
Jargon is saidSexiest Languauge
Positive Way:Improved VocabularySlide20
The Information Age(1960-Present)Sony WalkmanSlide21
Sony WalkmanThe Walkman was born because Sony's chairman, Akio Morita, wanted to listen to opera music during his long, international flights. He saw a problem and an opportunity to fill a gap in the market that would solve that problem. A company called Stereobelt had already introduced the portable tape player, but it had not been marketed successfully. The first prototype for the Walkman was finished in 1978. It took one year to complete the technology and get it ready for the market.Slide22
How Invention of Television Changed Communication It caused less communication between people due to the fact the other person is more focused on their music so its is a limited one way conversation.
It reduced learning though the initial plan was that it will making learning easier.