What is present in between the atoms of gases? (Aniket Mukherjee asks) Answer: Nothing. Vacuum
Can someone tell me how to derive M = M_0/√(1 – v^2/c^2) Emmanuel Gonzalez posted this. The formula for relativistic mass (i.e. the mass of a body when it is moving with speeds comparable to the velovity of light in vacuum is given by)
Space relates to the three dimensional (or four dimensional or even more dimensional) region which is necessary for any object to occupy. Vacuum denotes the absence of any matter.