According to Albert Einstein's formula E=mC^2 mass can be converted into energy and energy can be converted into mass. But a mass occupy some space but not energy why???
Responses (1)
Energy is not a physical unit. It is a philosophical concept and an accounting technique used to analyze mechanical and chemical exchanges. In nuclear physics it is defined as a wavelength of light, in biology it is a synonym for metabolism, and in public utilities they say energy when they mean connectivity. Anybody who uses the word in any other context either does not know what he is talking about, or is peddling something you don't need.
Physicists talk a lot about energy but they are unable to explain it in simple terms. You often hear the definition "energy is the capacity to do work". Well, work is defined as disordering of energy. So energy is the capacity to do disordering of energy. That is a circular definition. Einstein said "If you can't explain something so a bar maid understands it, you don't know it." We are forced to conclude that physicists don't actually know what energy is. They are merely being sloppy when they talk about it.
Sir i want to know that from where this massive universe full of masses came. Is it converted into mass from energy that does not occupy sapce and then the unvierse came into the form that we see today.