• Question: Why do some particles have mass while others have none?

    Asked by n3rdy to Gopal, Becky on 28 Jun 2013.
    • Photo: Gopal Ramchurn

      Gopal Ramchurn answered on 28 Jun 2013:

      All particles have mass… but they can also be conceived to have a ‘wave’ property. It depends on what theory you prefer to use to explain things.