×

Hello! Socratic's Terms of Service and Privacy Policy have been updated, which will be automatically effective on October 6, 2018. Please contact hello@socratic.com with any questions.

What causes electromagnetic waves?

1 Answer
Apr 14, 2016

Answer:

Acceleration of electric charges or transition of electrons between energy levels in atoms.

Explanation:

Either from accelerating electric charges example in a RLC ac circuit where electric charges change direction all the time and transmit the energy as an em wave and can be set to a required resonant frequency, etc. or from transition of electrons between energy levels in an atom example when an electron from a high energy level falls down into a lower energy level it releases the energy in the form of an em wave.