Bozdoğan, A.E. 2025. Length Contraction, Time Dilation, Mass, Momentum and Energy Equations, Particle and Antiparticle Potential Energy, Pair Production and Annihilation Energy Equations from Harmonic Oscillator Rest Energy Equation and New Relations from Uncertainty Principle. European Journal of Applied Physics. 7, 1 (Jan. 2025), 1–8. DOI:https://doi.org/10.24018/ejphysics.2025.7.1.352.