Radio sends sounds and information through the air using invisible electromagnetic waves. Here are seven fast facts about radio.
1. The first radio message was a signal sent by Italian inventor Guglielmo Marconi in 1895.
2. Canadian inventor Reginald Fessenden made the first radio broadcast of voice and music on Christmas Eve 1906.
3. In 1909, Charles Herrold launched the first commercial radio station, Station FN, from a bank building in San Jose, California.
4. Birds, sea turtles, dolphins, bats, shrews and some whales use radio-like signals to navigate.
5. Scientists use radio waves to talk to spacecraft like Voyager 1!
6. AM (amplitude modulation) radio is the oldest kind of radio. It can carry shows and reports over long distances.
7. FM (frequency modulation) radio is newer and clearer. It works best for broadcasts in a local area.
Make a homemade radio that really works! Find out how at go.scoutlife.org/radio
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