The Internet belongs to everyone. Let’s keep it that way.

Protect Net Neutrality
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Julian Löffelsend

on 14 April 2015

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Transcript of Radio

Historic development
Heinrich Hertz
discovered the transmission of the electric waves
Guglielmo Marconi
sent the first Morse Code from England

to Newfoundland
first voice message on Christmas Eve "CQ CQ"
communication: The value for the war
WWI improved the radio
the superhetrodyne radio by
Edwin Armstrong
in 1923
first commercial radio station in 1920
the Golden Age of Radio (1920 - 1940)
the transistor makes the radio compact
Forms and prime functions
Forms of radio:
electronic device -> receives electromagnetic waves -> converts them into sounds
Radios are a part of everyday life
most common modes:
AM (amplitude modulation) and FM (frequency modulation)
Main points
Forms and prime functions
Historic development
Role in society (nowadays)
Future perspective
Role in society (nowadays)
Future perspective
By Michael, Ediz, Felix and Julian
Prime functions
transmission of information
entertainment (music & shows)
Thanks for listening!
Heinrich Hertz
Guglielmo Marconi
Edwin Armstrong
- it is proven, that the radio raises the happiness and the energy of a person greatly

- had a major influence, because the radio became a new form of communication and entertainment

- people in groups gathered in front of the radio, which was a common form of entertainment

- the world became a much smaller place and people felt interconnected in a way

- the radio also had the power to change people's opinion in a way, that had never been seen before, for example in a political topic
Will the radio disappear in the future?
Do you think whether the newspaper or the radio will prove itself in the future?
Music Quiz
How good is your music knowledge?
Are there any questions?
- the radio is still of big importance nowadays

- radio shows are broadcast in nearly every language 24 hours a day

- the radio is one of the cheapest and most efficient ways to get information quickly

- even poor countries can afford radios

- the radio is being used mostly when driving the car,and doing housework
Full transcript