Heat is a form of energy that transfers from one body to another due to a difference in temperature. Heat moves from hot objects to cooler ones, and this transfer can happen through conduction, convection, and radiation. Understanding the physics of heat helps us explain everyday phenomena like why a metal spoon feels hot when placed in a hot liquid or why we feel warmth from the sun on a cold day.
The measurement of temperature, which indicates the degree of heat, is essential in many scientific disciplines. Temperature influences physical properties such as the state of matter, with solids, liquids, and gases all responding differently to heat. Studying the physics of heat allows scientists to develop efficient heating and cooling systems, as well as advancements in energy use and sustainability.