Explain the production and detection of em waves
 

Dear Student,
Please find below the solution to the asked query:
 
The production of all electromagnetic waves starts with a charged particle. This charged particle creates an electric field and exerts a force on other nearby charged particles. When this charged particle accelerates in its electric field, it produces a magnetic field.
The electric and magnetic fields created by a charged particle in motion are self continued. This means that an electric field that oscillates as a function of time will produce a magnetic field and a magnetic field that changes as a function of time will produce an electric field.
Different methods are used for detecting electromagnetic waves. One of the methods is detecting electromagnetic waves using antenna. Tuning circuit is used for receiving electromagnetic waves through antenna.
Alternating current is set up in the antenna by incoming wave. The resonance frequency of the LC circuit is then adjusted to matc electromagnetic wave. This results a relatively large current in the circuit. This current is then fed into an amplifier to further increase the signal.


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