Hess’s Law is named after Germain Henri Hess (1802 – 1850) a Swiss national who moved with his family to Russia at the age of 3. He qualified as a doctor but later became a professor of chemistry at the St Petersburg Technical Institute. He was interested in minerals and analyzed one particular ore of silver telluride, Ag2Te, which is now called hessite in his honour. Germain Hess HessiteHess’s Law states that...