In the 1920's EM radiation was thought of as a CONTINUOUS FLOW OF ENERGY
Max Planck investigated the results of black body radiation and photoelectric effect which were showing incremental jumps in energy transfer, he called these 'Quanta'
In 1927 Albert Einstein proposed that these 'Quanta' were an actual thing, 'the photon' a 'wave/particle'
The contemporary model of Electromagnetic Magnetic radiation is the WAVEFORM model with the electric and magnetic waves at ninety degrees to each other
Waves exist in whole cycles, small bits of waves are not viable so EM radiation can only transfer energy ONE CYCLE at a time , or a whole number of cycles, these are your Quanta
NO PARTICLES REQUIRED
All results can now be explained using wave theory , particle theory sometimes works,
think about this one, long wave radio, R4 etc, the wave length is aprox one mile, quantise that ! whenever i tried to go there, there was this fuzz in my head, spent years learning all that math which is just another language, just because one can write a fairy story it don't make fairies real does it? If you want to believe in particles, that's your choice, and there are lots of little bright particles floating around the ISS , another taking a look at concord on her maiden flight and flying around the sky at night sometimes being chased by the Raf , so maybe they are real , but I see no evidence for the existence of particles,
'resonance' was the signpost showing me where to look, I think in pictures , I was supposed to see a standing wave, thanks for the browbeating exchem , forced me to to look more carefully.
hug's and cuddle's , you'll need them, the man with straw in his head just made a lot of clever people look silly,but it will be a while yet. before you realize it,,