>>11828648Ignoring everything else in the thread, the photon never has a rest mass. It is a massless particle. Whoever told you it has mass is a retard.
What it has is momentum. This momentum arises out of the wave equations for a free particle.
So, We have a wave /\_ _/\_ _ That goes on forever. This is the wave function of, say, a photon.
\/ \/ /\ /\
If you square the wave function, you get: / \_/ \_ which again, keeps going. This squared wavefunction is the probability of finding that photon at some given point.
Double slit and other experiments show that, yes, position is probabilistic. Unless you somehow magically found some amazing evidence that disproves the past 100 years of accumulated experimental data, we will continue to assume that a squared wavefunction gives the probability of find a particle at some point.
So we now have a function for the probability of a particle's position. The problem, is that probability only goes up to 100%. Our probability goes to infinity.
That's fixed by having a range of possible energies for this particle. That creates several different waves, with different frequencies. When we combine these waves, they cancel out far from the center, and we are left with a wave packet- a small collection of waves centered on a point.
That wave packet is the particle. It has a small range of possible positions, and a small range of possible energies. The energies can be linked to momentum via E = (p^2)/2m . (in truth, it's much more complicated, but this is close enough).
For someone unfamiliar with math and physics, the above may be confusing. For someone who has mid-level undergrad experience with either, the above is maybe not easy, but makes sense.
Tl;dr: It's more nuanced than what you said. It's more abstract and requires more math to understand than most physics, but once you know the math and go through how this came about, it makes sense.
