De Broglie’s "Matter Waves" Are Just Ordinary Waves

The "quantum weirdness" of λ=h/p vanishes when you account for unit scaling.

The wavelength of a particle (massive or massless) is just its frequency inverted and scaled by c—exactly like light.

λ=h/p
= Hz_kg c^2 / ( hf/c)
= Hz_kg c^2 / ( Hz_kg c^2 f/c)
= c/f

;)