ADVANTAGES AND DISADVANTAGES OF RADIO
This invention have good points and bad points, in this essay i'm going to discuss some of this points.
A person who listen radio all the time is a person very informated, because in the radio always are sending news from last minute and this is one of the mos important ways to be informed, but if you only listen radio, the othe activities will be perjudicated because you can't put all the attention in two or more things that are arround, for example, if you are reading, you can't listen radio because the brain mix the information and in the end you will haven't learn anything.
Other bad point of the radio is that if you listen with high volume it can injure the ear and later if people don't talk so high you wouldn't understand what they are telling.

TWO DIFFERENT INVENTORS!
Although in the invention of the radio the most important inventors was Guglielmo Marconi and Alexander Stepanovich Popov, there are so many differences and similarities between them.
Both inventors was involved in the progress of communication in humans, that give to each one of them recognize and glory.
Guglielmo Marconi was born in Italy and he was the inventor of the radio signals transmision, also he was the first men who send this signals in the sea from one shore to another shore.
Alexander Stepanovich Popov was a Rusian engineer who develop a radio receptor. This machine was designed for regist radio emitions from natural atmosphere, that wasn't for communication.

DEFINITIONS

INVENTOR:An inventor is a person who invents something to solve problems, an inventor create sollutions.

INVENTION: Inventions come about in many ways. Most of the time, inventions happen because someone works to solve a problem. Sometimes inventions are the result of accidents.

SCIENCE: Knoledge gained by observation and experiment. A branch of knoledge such as biology, chemistry, physics.

INVENTIONS

THE RADIO
The radio is one of the most important inventions of all time.This is a communication system that reduce distances for everyone.WITH this essay i want to show how this invention is used in all the world, also i want to show the progress of this revolutionary machine.

THE ORIGIN OF THE RADIO
The origin of the radio begins with the telegraphy. Telegraphy means writing in distance in greek and this is a communication system that consist in coded numbers, letters and signs.
The first modern telegraph was made in France in 1792, but arround 1838 was created the first electric telegraph machine by Morse in New York. With this new electric technology, the receptor was able to receive messages from a transmitter that could be long miles away.