👉 In physics and engineering, an antitropic is a force that prevents objects from moving or dissipating energy in an attempt to resist or avoid movement. These forces are often associated with liquids, gases, or fluids, as they tend to be more viscous than solids and can resist the motion of other substances. Antitropic phenomena occur when these fluids are subjected to external forces, such as friction or a heat source, which cause them to become less viscous, leading to resistance.