31 March 20

It's Bunsen Burner Day! Robert Wilhelm Bunsen was born on either 30 or 31 March 1811 -- sources reflect some uncertainty. He is most famous for developing the adjustable flame burner that bears his name, but he was also responsible for the discovery of the elements cesium and rubidium, and for big advances in the use of flame spectrometry in analytical chemistry. My tie features the periodic table and a wide range of laboratory equipment, including a Bunsen burner!