All these devices use electromagnetic waves:
- FM radios
- Microwaves
-
TV remote controls
-
X-rays
What are EM Waves?
- Electromagnetic waves or EM waves are waves that are created as a result of vibrations between an electric field and a magnetic field. Also, EM waves are composed of oscillating magnetic and electric fields.
- The electromagnetic spectrum includes, from longest wavelength to shortest: radio waves, microwaves, infrared, optical, ultraviolet, X-rays, and gamma-rays.
Therefore, all devices except alarm clocks has electromagnetic waves.
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