The space-time continuum
In physics , spacetime, also called the space-time continuum , is a mathematical model that fuses the three dimensions of space and the one dimension of time into a single four-dimensional continuum . Spacetime diagrams are useful in visualizing and understanding relativistic effects, such as how different observers perceive where and when events occur. The question is whether space-time can lose its continuity? How can space-time be interpreted from the point of view of the micro-world - elementary particles ? How can dl space-time be interpreted after the level of Planck constant .