Inventions+(1-8)


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Inventions:** The first non-electric telegraph was invented in 1794, by Claude Chappe. This type of telegraph was visual and used semaphore, a flag-based alphabet, and depended on a line of sight for communication. A crude telegraph was invented in 1809, by Samuel Soemmering. A crude telegraph uses wires with gold electrodes in water. At the receiving end, the message is read by the amound of gas caused by electolysis. The first telegraph in the U.S. was invented in 1828, by Harrison Dyar. He sent electrical sparks through chemically treated paper tape. The paper tape burned dots and dashes that translated into a message.
 * Telegraph**- The telegraph is very outdated. Technology has grown so much since the late 1800's. There are many different kinds of telegraphs. A telegraph is a communication system that uses transmitted electrical signals over wires from different locations that are translated into messages.



Today, electricity is all around you. It has really improved since the late 1800's.
 * Electricity** is used in every day life. We get electricity, from the conversion of other sources of energy. Coal, natural gas, oil, nuclear power, and other natural sources. In 1800, the electric battery was invented. In 1821, the first electric motor was invented. The hydroelectric plant in the west was founded in 1887.

The steam engine was built in 1803 by Richard Trevithick.
 * Railroads**- Were introduced in England in the 17th century. They were used as a way to reduce friction in moving heavily loaded wheeled vehicles. They were then known as 'gravity roads'. Wagonways were the begining of modern railroads. By 1776, iron replaced wood in the railroads, and wheels on carts. Later, wagonways then evolved into tramways.




 * The Bessemer Process**- Was the first inexpensive process for the mass-production of steel from molten pig iron. It is the removal of impurities from the iron by oxidation wit air being blown through the molten iron. The oxidation also raises the temperature of the iron mass and keeps it molten. The Bessemer Process was named after the inventor, Henry Bessemer. The process was discovered by William Kelly, in 1851.