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نص القصة المصورة
- 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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