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First phone using electrically transmitting speech sounds.
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The first phone was built in early 1876. The first phone was not movable. The first five mins. coasted $9 and you could not hear each other clearly.
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Attached wire on the bottom diaphragm is arranged so that it almost's touches water, which is made electrically conductive with small amounts of acid. You speak above the diaphragm causing it to move up and down, making the connected wire have more or less contact with the acidulated water, changing the circuit resistance. Concluding current variations in the listening device reproduce the sounds.
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Built with a double pole transmitter and iron box receiver were used in 1876 to transfer and get the world’s first one way long distance telephone, but also can go two ways.
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Built with a wooden box and wooden hand they were capable of transmitting and receiving conversations.
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A Hand-cranked magneto type telephone.
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Wooden wall models. Sawed-off candlestick fitted with a cradle and receiver handset
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The square box layout of the wall set got rid of and the bell was placed in the base of the desk telephone.
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This phone is more high tech then the other. it provides Call-Waiting, Call-Display, and Voice Mai. It can save up to 50 names in the phone.
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An improved Wooden Box and Wooden Crank phone. It has a crank in the center of the panel generated power to call the operator better.
