Moving charges.
Another opinion:
If an electromagnetic wave were made up of moving charges, you'd see lightning
shoot out of the meatloaf every time you nuke it in the microwave.
While moving charges may generate electromagnetic waves, the charges stay where
they are, while the waves go sailing away. The waves are made up of electrostatic
and magnetic fields.
yes, electromagnetic wave is a radio wave
Sound Wave
Frequency
the electromagnet makes the door close when a fire alarm goes off
No difference at all. Radio waves are one of many types of electromagnetic waves.
it is a wave of colors that go from left to right starting with the color red
Good thought. But, perhaps strangely, no.
The Electric Physics engineer would
The strength of an electromagnet is determined by the number of windings, the current flowing through the windings, and the permeability of the core.
An electromagnet makes a great door lock. The steel in the door will stay put until the electromagnet is turned off.
An electromagnet makes a great door lock. The steel in the door will stay put until the electromagnet is turned off.
Search on the Internet for it.