In quantum mechanics, electromagnetism is mediated by the gauge boson known as the virtual photon.
In classical mechanics, it is a "light wave".
Somewhere where the two play reasonably well together, it is a "real photon".
EM energy has no "form", only models we apply to it. Saying it is like something big we have experience with, to convey some properties we recognize.
what has our understanding of electromagnetism led to?
Paul Lorrain has written: 'Solutions manual for electromagnetism' 'Electromagnetism' -- subject(s): Electromagnetism 'Fundamentals of electromagnetic phenomena' -- subject(s): Electromagnetism
The father of electromagnetism is Michael Faraday. He made significant contributions to the understanding of electromagnetism and electromagnetic induction in the 19th century, laying the foundation for modern electromagnetism theory and practice.
electromagnetism is the force an electromagnet is the object
Michael Faraday wasn't the discoverer of electromagnetism.
In radio transmission, you could theoretically transmit radio signals at audio frequencies. However, because the wavelength of electromagnetism at audio-like frequencies is Huge and the frequency of a radio transmitter dictates the size of the antenna and the power requirement, you would need A Very Big Antenna and a Very Big Power Supply to do this. So, we've learned to transmit at higher "carrier" frequencies, modulating either the amplitude or frequency of the carrier signal with our audio and subtracting the carrier at the receiver end.
Wave
is an electromagnetism
Electromagnetism
Photons are the carrier particles of the electromagnetic force. They do not possess an electric charge but have both energy and momentum, allowing them to transfer the electromagnetic force between charged particles. This transfer occurs through the electromagnetic field interaction mediated by photons.
Eugene W. Cowan has written: 'Basic electromagnetism' -- subject(s): Electromagnetism
Electromagnetism