Pulsed electromagnetic field therapy (PEMFT, or PEMF therapy), also known as low field magnetic stimulation is the use of electromagnetic fields in an attempt to heal non-union fractures and depression.
There are various mathematical descriptions of the electromagnetic field that are used in the study of electromagnetism, one of the four fundamental interactions of nature.
The quantization of the electromagnetic field is a procedure in physics turning Maxwell's classical electromagnetic waves into particles called photons.