Invention+of+the+Radio

by Kevin, grade 5

The creation of radios has had a world wide impact. It has allowed information to be transferred far and wide; not only nationally, but internationally.

Radios began in 1893 with Nicholas Tesla of Wireless Radio Communications in St. Louis. He laid the foundation for those scientists to come who worked to perfect the radio we use now. There have been many who had a piece in making the radio. Samuel Morse used telegraph signals. Clark Maxwell used electro magnetism. Gaglielmo Marconi used electromagnetism too, and made it stronger; he sent a Morse code overseas. Reginald Audray Fessenden was the first to send music and his voice across seas by using an Alexanderson alternator, which is a rotating machine that generates continuous radio waves. It was too big so they tried to make it smaller but still effective. Inventor Lee De Forest in 1906 modified and made the audion tube, a glass tube containing three electrodes which amplified sound.

Although the radio is old, it's still used today.