Combustion is a chemical process in which a fuel (such as a hydrocarbon or other combustible material) reacts with an oxidizer (typically oxygen) to produce heat, light, and the release of chemical by-products, including carbon dioxide and water vapor. Hydrogen, a notable component in various combustible materials, plays a significant role in this process. Combustion is a fundamental and widespread process in various applications, including energy production (e.g., in engines and power plants), transportation (e.g., in internal combustion engines), and heating.

Imaging technology can be incredibly valuable in studying combustion processes providing valuable insights into the dynamics of combustion, emission formation, and the potential for optimising combustion for improved efficiency and reduced environmental impact. This is important for a wide range of industries, from energy production to transportation, as they seek to balance energy needs with environmental concerns.