Category: Relativistic Quantum Mechanics

  • Waves, particles and Einstein !

    Waves, particles and Einstein !

    Waves are something that have no mass and move at the maximum speed, mass m = 0. speed c = 1. So whats their momentum? p = m.v = 0? Right? No. For pure waves; momentum does not come from mass. It comes only from motion. (pure wave; they do not have mass) For matter…

  • What happens when cows move rapidly !

    What happens when cows move rapidly !

    Cows not moving and moving fast. How does this difference impact the image in a modern digital camera? Honestly I haven’t checked it with old day manual camera neither do I remember what impact motion brings into mages taken by such, eg does anyone remember when he/she took a picture of a friend standing in…

  • New forms of Uncertainty Relationships in Quantum Mechanics.

    ΔE.Δt ~ h Δp.Δx ~ h ΔL.Δθ  ~ h * Shouldn’t the constant above be ℏ/2 ? Let us first clear up some air of confusion. The above relations are kind of vague even though look like canonically powerful ways to represent the formal concepts of the Heisenberg Uncertainty relationships. I have myself confused with these at times … with…

  • Uncertainty Principle and Photography !

    why a moving object becomes fuzzy when you take its picture. Speed bears an uncertainty with momentum (hence energy ) just like time with energy and position with momentum. But for photons which are always ultra-relativistic we should not talk about its positions. Due to speed (relative motion of objects such as your and moving…

  • Why is the helicity for a mass-less particle Lorentz invariant?

    Result; now that photons are mass-less, their energy, momentum, speed, etc are no more variables, in the sense of arbitrariness. They are constants, taking only a few values, but constant in a given situation. But other particles have these properties; arbitrary. So electrons energy and momentum are not fixed, but arbitrary. But as long as…