31. To aid in the sedimentation process, flocculants and coagulants are added to reduce the repulsive forces between the particles. 32. But a repulsive force is just what's needed to explain the supernova data, so lambda seems to be back. 33. I sort of hope the universe really is accelerating and that it's at least partly due to Einstein's repulsive force . 34. He described the constant as " a repulsive force that is a property of vacuum in space and time ." 35. The side chain of this charged residue points into the phospholipid bilayer which would normally cause repulsive forces to occur. 36. He interpreted these as acting as computing elements which exert repulsive forces to interact and persist in filling the space. 37. But to keep the universe expanding, there must be something else as yet unmeasured to act as a repulsive force . 38. Because the repulsive force resides in space itself, as the universe grows, the push from dark energy grows as well. 39. But by exerting an attractive or repulsive force on all matter, it would be the functional equivalent of the impossible machine. 40. Thus as the universe expands, the total vacuum energy, and the repulsive force associated with it, would grow larger with time.