⚙️ how
How do radio waves carry information?
TechnologyElectromagnetism
Quick Answer
Radio waves are modulated to encode sound, data, or images into electromagnetic signals. A receiver extracts the information by detecting those changes.
The Full Story
Radio waves are electromagnetic waves with long wavelengths, and they can travel through air and vacuum. To send information, a transmitter changes a property of the wave such as amplitude, frequency, or phase. AM radio varies amplitude, while FM radio varies frequency. Receivers pick up the wave with an antenna and decode the modulated pattern back into audio or data. This same basic idea underlies broadcasting, mobile communications, Wi-Fi, and many other wireless systems.
Key Facts
1.AM changes amplitude; FM changes frequency
2.Radio waves are electromagnetic waves
3.Antennas transmit and receive the signals
YouTube Angle
Suggested video title for this topic:
"How invisible waves send music and messages"