Green flames are a visual phenomenon that occurs when certain materials are burned. The green color is often produced by the presence of specific metal salts, such as copper compounds or barium. When these substances are heated, they emit light at particular wavelengths, resulting in the characteristic green hue. In addition to their aesthetic appeal, green flames can be used in various applications, including fireworks and pyrotechnics. The vibrant color adds excitement to displays and can be created through controlled chemical reactions, making it a popular choice for entertainment and artistic purposes.