The interactions between two particles of component 1 or two particles of component 2 are characterized by the lengths or , respectively, while the interaction between one particle of each component is characterized by the length . If , the mixture is said to be additive, otherwise, nonadditive. In the latter case, the nonadditivity can be either positive, , or negative, . We also find the values of the ratio and plot them, where , the inverse temperature; is the pressure; and is the number density. Sliders let you control the size and distance ratios and , the concentration (or mole fraction) of component 1, , and the total packing fraction .