The Radio
⭐ MasteredGuglielmo Marconi sent radio signals across long distances in the 1890s. Radio waves carry sound, so we can hear music and news from far away.
Radio waves travel at the speed of light.
All about The Radio
Radio sends information through the air using electromagnetic waves. Guglielmo Marconi sent radio signals across the Atlantic Ocean in 1901, showing that wireless communication was possible over huge distances. Radio waves carry sound, which is converted into electrical signals and then back into music or speech.
Radio became a major way to share news, music and entertainment in the 20th century. It helped people in remote places hear the same stories and songs as everyone else, and it is still popular today.
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Real-life uses of The Radio
- Listening to news and music in a car
- Sending emergency messages to ships and aircraft
- Broadcasting local stories to communities
Frequently asked questions about The Radio
What is an electromagnetic wave?
A wave of energy that travels through space and includes radio waves, light and X-rays.
Who was Marconi?
An Italian inventor and engineer who developed long-distance wireless telegraphy and is often credited with the early development of radio.
Why does radio sometimes crackle?
Interference from storms, electrical equipment or distant signals can disturb radio waves.