What really is a particle? How can massless particles exist? How can it still be a particle if it doesn’t have any mass?
In: 76
You will probably find some good answers here, but what helped me was a visualization of what is literally and physically going on.
[https://www.youtube.com/watch?v=UoLglpqmOr0](https://www.youtube.com/watch?v=UoLglpqmOr0)
This guy’s explanation got me at least half-way there.
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