Flag of Burkina Faso of black, white, and red. These colours represented the three major tributaries of the Volta River, which flows south through the country: the Black Volta, the White Volta and the Red Volta. It is similar to the tricolor flag used by the German Empire from 1871 to 1918. The flag was changed when Upper Volta became Burkina Faso on 4 August 1984. From 1984 until 1997, the official Burkina Faso coat of arms used a revolutionary central crest featuring a mattock crossed with a Soviet AK-47 assault rifle, along with an open book symbolising the importance of education and the
Volta potential of the Volta potential. Volta potential The Volta potential (also called Volta potential difference, contact potential difference, outer potential difference, Δψ, or "delta psi") in electrochemistry, is the electrostatic potential difference between two metals (or one metal and one electrolyte) that are in contact and are in thermodynamic equilibrium. Specifically, it is the potential difference between a point close to the surface of the first metal, and a point close to the surface of the second metal (or electrolyte). The Volta potential is named after Alessandro Volta. When two metals are electrically isolated from each other, an arbitrary potential difference