Recent content by galleon

this is a somewhat old-fashioned view of mass, that is now considered to complicate matters unnecessarily. it's better to use the word 'mass' to simply refer to the rest mass of an object, which is invariant, and get rid of this idea of mass changing with velocity. mass is invariant, and...

The thing to realize is that the term 'black hole' doesn't mean: 'the bit at the center where all of the mass is concentrated, that may or may not be a singularity'. 'black hole' refers to the whole volume inside the event horizon, which clearly can have a radius, surface area and volume. my...

The idea that fundamental particles are spheres with some finite radius has to be one of the most prevalent.