👉 In physics, a thermoluminescent device is a type of light source that emits visible or invisible light when exposed to an electric current. Thermoluminescence works by emitting energy from a cathode, which is typically made of a metal (such as gold, silver, or platinum), and then passing this energy through a material called the anode, which can be either a semiconductor or a magnetic material. When the cathode is heated to a certain temperature, it emits light in the visible
