Currently new to Electromagnetism field , I have a few questions to clear up my confusions :

• Electromagnetic Waves range from Radio Waves up to Gamma Waves how are those created ? I understand that a moving charge creates an electromagnetic field but how does this field radiate the electromagnetic waves?

• Transformers essentially work using Electromagnetic Induction and hence there is an electromagnetic field in transformers operation : Does this mean that a transformer emits electromagnetic waves? Or is the field just static in the region and hence no waves are emitted ? What would be the type of waves produced by a transformer if any are emitted ?

Thanks Ahead


closed as too broad by Kyle Kanos, Emilio Pisanty, Kyle Oman, AccidentalFourierTransform, stafusa Jan 31 '18 at 18:26

Please edit the question to limit it to a specific problem with enough detail to identify an adequate answer. Avoid asking multiple distinct questions at once. See the How to Ask page for help clarifying this question. If this question can be reworded to fit the rules in the help center, please edit the question.

  • $\begingroup$ You say you are just starting. If you continue your studies, these questions will be answered. Be patient. It's out of scope for us here to provide your foundation education! $\endgroup$ – garyp Jan 31 '18 at 14:40
  • $\begingroup$ Yes, a transformer induces an EM field around itself (and technically it's effects occur up to any distance away), but they are incredibly weak even a small distance away and it wouldn't typically be considered a source of "radiation". A light bulb is a better electromagnetic radiator than a transformer, because electromagnetic radiation is the job of a light bulb. $\endgroup$ – Steve Jan 31 '18 at 15:50
  • $\begingroup$ A transformer has a time-varying electromagnetic field. However, only if this field is periodic in time and rather far away from the source (here the transformer) it would be considered as radiation. $\endgroup$ – Frederic Thomas Jan 31 '18 at 16:39