Low-temperature physics is the study of materials and phenomena at temperatures close to absolute zero, which is 0 Kelvin or -273.15 degrees Celsius. At these low temperatures, the behavior of atoms and molecules changes significantly, leading to unique physical properties. Researchers explore how materials conduct electricity, exhibit magnetism, and undergo phase transitions under these conditions. One of the key areas of interest in low-temperature physics is the phenomenon of superconductivity, where certain materials can conduct electricity without resistance when cooled below a critical temperature. This field also investigates liquid helium, Bose-Einstein condensates, and the behavior of quantum systems, providing insights into fundamental physics and potential technological applications.