The Reciprocal System of physical theory (“RS” theory) was created by chemical engineer Dewey B. Larson during the 1940s to 1950s, after noticing that properties of the elements in the Periodic Table could be easily determined if one were to assume that time had three dimensions, instead of one. Larson realized that these three, temporal dimensions had the same properties as our three, conventional spatial dimensions, which led him to the conclusion that there were actually three dimensions of space/time, each dimension of space pairing up with a dimension of time as a ratio. The inverse relation of space to time is what is commonly called speed (miles per hour, meters per second, etc), or in a more general sense, motion. By assuming that motion rather than matter was the actual building block of Nature, he was able to deduce the structure of our physical universe through natural consequences, from the smallest particle to the largest galaxy.