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So today, we will talk about Electromagnetic spectrum.
What is Electromagnetic wave?
EM waves can travel through a vacuum
EM wave are waves that are created as a result of vibration between an electric field and a magnetic field
All waves travel at the same speed in a vacuum 3x10 m/s
Very Good!!! Next. Who is Heinrich Hertz?
He showed experimental evidence of the EM wave and their link to light. And also he discovered radiowave.
Very good! Speaking of Radiowave, what is radiowave?
and also a Radiowave are the waves having the longest wavelengh.
Radiowave is generated by a transmitter and then detected by a reciever.
Radiowave are a type of EM radiation best-known for their use in communication.
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