This paper presents a deterministic, relativistic explanation for the double-slitexperiment, bypassing the traditional quantum mechanical (QM) reliance on probability wavefunctions and Fourier-based wave packets. By defining velocity as acomplex vector where rotation exists on the imaginary (temporal) axis, we propose a mechanical origin for wave-particle duality and quantization. We argue thatobserved interference patterns are geometric consequences of timeless energy transactions, and that ”wavefunction collapse” is simply the mathematical projection ofa complex vector onto the real spatial plane during an interaction.