What are electromagnetic waves?

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(N/A) Electromagnetic waves are waves that are created as a result of vibrations between an electric field and a magnetic field.
In other words,electromagnetic waves are composed of oscillating electric and magnetic fields that are perpendicular to each other and to the direction of wave propagation.
These waves do not require a material medium for their propagation and can travel through a vacuum at the speed of light,$c \approx 3 \times 10^8 \ m/s$.

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