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String telephone
It was the first attempt at a telephone, but it didn't have a large range. It was created by Robert Hooke when experimenting on sound transmition. The string telephone sends vibrations through the string or wire and allows you to hear what the person is saying on the other end. https://en.wikipedia.org/wiki/Tin_can_telephone -
Liquid Transmitter
The liquid transmitter was the first form of long distance communication using speech. Alexander Grahm Bell created to allow people to have clear conversations. It has a wire and diaphram that vibrates on the water creating currents which reproduces the original sound. http://www.cbsnews.com/pictures/the-evolution-of-telephones/
http://www.antiquetelephonehistory.com/liquid2.html -
Candle Stick Telephone
The third important part of the evolution of the telephone was the candlestick telephone. I had a microphone you coulld speak into at the top of the base. It also had cone like object which you put up against your ear to hear what the other person is saying. When you want to talk you would lift the speaker, activating the reciever allowing you to connect to other telephones. https://en.wikipedia.org/wiki/History_of_the_telephone
https://en.wikipedia.org/wiki/Candlestick_telephone -
Desktop Rotary Dial Phone
It was invented by Wetsern Electric. This new telephone was more comfortable to use because it only required the use of one hand. The actual phone had the speaker at the top and the microphone in one hand allowing us to speak and listen at the same time. It also recieved a dial which was also included in later versions of the candlestick telephone. http://www.arctos.com/dial/
http://www.cbsnews.com/news/evolution-of-the-phone-from-the-first-call-to-the-next-frontier/ -
Touch-Tone Telephone
The touch tone telephone wa created by bell labs. It wasn't much different from the previous model, but it was much easier to dial a number. Instead of spinning the dial you push buttons instead. Once you lift the reciever you can start pressing the buttons and it connects to you the phone with that number. https://en.wikipedia.org/wiki/Push-button_telephone
https://en.wikipedia.org/wiki/Timeline_of_the_telephone -
Cordless telephone
Terri Pall invented the cordless telephone. It has the same features as the previous telephone, but it's cordless. It allows you to move freely around your home while speaking on the phone due to the wireless reciever. https://en.wikipedia.org/wiki/Cordless_telephone -
Cellular Telephone
The cellular telephone was invented by Martin Cooper. This was the first telephone that didn't require a reciever. This allowed portability. It was connected wirelessly to cell towers that allow you to connect to other phones across the world. You just had to recharge the battery life every once in a while. https://en.wikipedia.org/wiki/Timeline_of_the_telephone#1970_to_1999
https://en.wikipedia.org/wiki/Mobile_phone -
Smart Phone
The smartphone was the most recent major innovation. The first of it's kind was made by IBM. It is a cellular telephone that has more capabilities than just calling. The first one had a calendar,could send and recieve e-mails,address book,calculator, and a clock. After that creation people kept on innovating smartphone designs and functions. https://en.wikipedia.org/wiki/Smartphone#Early_years
http://www.qrcodescanning.com/smartphonehist.html
