>>12042583standing waves are only an apparent steady phenomena but the underlying mechanism is still "in motion"
the other situation would be just a magnet, this is a steady condition, and about the original question
>>12042059 it can be posible for example to just spin a magnet so the poles shift and you are technically generatic a purelly magnetic wave, a more sofisticated way to do this is by using an electromagnet but in this case theres going to be E field "noise" ... the spinning magnet is the pure-est form but now you are limited to the RPMs of the motor you use (this will be directly related to the magnetic frequency of the wave, the faster the spin the higher the frequency)
