Smokeless powder is a type of propellant used in firearms and ammunition. Unlike traditional black powder, it produces little to no smoke when ignited, allowing for better visibility and accuracy during shooting. This makes it a preferred choice for modern firearms. Invented in the late 19th century, smokeless powder is typically made from nitrocellulose and sometimes nitroglycerin. Its higher energy density means that less powder is needed to achieve the same explosive force, making it more efficient. This innovation significantly changed the design and performance of firearms and ammunition.