The film badge dosimeter or film badge is a personal dosimeter used for monitoring cumulative radiation dose due to ionizing radiation. It of a photographic film and a holder. This film badge is used to determine or measure and record the radiation exposure as a result of radiations, x-rays, gamma rays and also beta particles.
The burning of the sun is not chemical combustion. It is nuclear fusion. This combustion releases energy which we experience as the heat and light given off by the flame.