Einstein didn't prove jack shit.
He was hired by the enemies within to run the circles game on your mind.
Frequency is the physical reflection of the element of the "matter" in the wave. It has matter. It has substance, light has substance, and gravity, your junk science remedy you can't let go of, has zero to do with it, because it is non-existant.
It is only planted in your face for "chaos. They love their God "chaos."
It's in all their handbooks.
Proof will be you will never get to a "formula" that actually checks out. Never.