Claim: Hans Heinrich Landolt was a Swiss chemist known for discovering iodine clock reaction which is a demonstration experiment to display chemical kinetics in action
Evidence: Hans Heinrich Landolt (5 December 1831 – 15 March 1910) was a Swiss chemist who discovered iodine clock reaction. The iodine clock reaction is a classical chemical clock demonstration experiment to display chemical kinetics in action; it was discovered by Hans Heinrich Landolt in 1886.