PARAGRAPHHe became a Swiss citizen and in was awarded a Ph. This work would later earn him the Nobel Prize in Physics. In the second paper, he devised a new method of counting and determining the size of the atoms and molecules in a given space, and in the third he offered a mathematical explanation for the constant erratic movement of particles suspended in a fluid, known as Brownian motion. These two papers provided indisputable evidence of the existence of atoms, which at the time was still disputed by a few scientists. In special relativity, time and space are not absolute, but relative to the motion of the observer.