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Aug 5, 2023 at 8:16 comment added Bill Alsept @Terminality Thousands of coherent photons traveling through a slit experiment and scattering or diffracting will spread out and impact all areas across the detection screen. The pattern they create, even one at a time looks like a wave, but its still made from individual particles
Aug 3, 2023 at 16:44 comment added JQK @Terminality The only way to show that it is both a particle and wave is use the double slit experiment using a photon counter (ie. a detector that is only sensitive to the particle nature of light). In this experiment you'll get the wave phenomena (ie. interference), but only discrete 'clicks" at the measurement device. It's nuclease how you do this experiment with stuff you have around a home.
Aug 3, 2023 at 16:32 comment added Terminality @JQK I'd tend to make this the right answer bc. it at least addresses the essence of my question (upvote for that at least), but maybe see the question edit.
Aug 2, 2023 at 22:52 comment added PhysicsDave The EM field sees individual slits when the PMTs are close and both slits when the PMTs/screen are far. The EM field sees it all ..... most importantly the excited electron in the excited atom is already strongly interacting with the EM field, much before real photon emission.
Aug 2, 2023 at 21:14 comment added JQK The fact that a medium is needed or not needed is not a necessary aspect of this question.
Aug 2, 2023 at 21:10 comment added JQK I'm not sure what the point of your statement is. Every light phenomena can also be explained by a wave, but only some need to be explained with particles. If you use an electromagnetic wave at carrier frequency of 1 MHz, it'll be very difficult to measure a photon, but all its physics is described classically as a wave.
Aug 2, 2023 at 19:41 comment added Bill Alsept Water waves and sound waves travel in a medium. Photons do not need a medium. Photons are always measured as individual particles. Photons diffract around edges or scatter off edges. A slit has two edges and this creates the overall spreading. EVERY light phenomenon can be explained with individual photon particles but only some can be explained with waves. Besides, what is a light wave if not billions of individual and coherent photons?
Aug 2, 2023 at 18:49 history answered JQK CC BY-SA 4.0