M Dash Foundation: C Cube Learning

Category: basic physics

  • 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…

  • Why Bose is not the scientist after whom Higgs is named.

    A very few particles (out of 1000s) are named after scientists, eg the so called mu meson was called a Yukawa Meson, although it turned out to be a misnomer. Mu-meson was found to be a lepton, rather than a meson, as was thought by Yukawa and others. Now called Muon it belongs in the…

  • A particle that defies classical mechanics !

    A photon has no mass but energy and it has speed and it has momentum although it does not have mass. Thats impossible in Classical Mechanics. Because Classical Mechanics associates with every mass; momentum and kinetic and potential energy. All those would be zero if mass were to be zero. Also the speed of the…

  • Solutions to Irodov problems

    Solutions to Irodov problems

    Problems In General Physics,  I.E. Irodov Part-I Physical Fundamentals in Mechanics. Chapter 1.1 Kinematics.   10 interesting problems in elementary mechanics This post intends to provide 40 interesting problems in elementary mechanics from IE Irodov, Problems in general physics that I solved in last couple weeks. Note that another 30 problems (additional 12 at hand) which…

  • Ideas that changed our notion about the Universe.

    1. Aristotle Fallacy; A notion that objects need force for their movement. It contradicts the idea of inertia. Newton corrected this by introducing the first law, things continue in their state of motion, a quality called as inertia, without requiring force and the motion changes due to application of force. 2. Earth is flat; that…