This is a digital artwork that represents an image with two characters very differentiated, almost opposite with a black background, but with the peculiarity that those characters attract. The force of inertia exerts a weight on them. The scientific story behind this artwork tells us about the fluorescence emitted by two different enzymatic solutions, in which one is located over an irregular metallic surface, after being irradiated with an ultraviolet laser and the other not. All of course on a microscopic level.