29 May '18, 11am
Today on Google's home page is a fun interactive pH scale, a scale for measuring acidity and alkalinity, remembering S.P.L. Sørensen. He was a Danish chemist born on January 9, 1868 in Havrebjerg, Denmark and died at the age of 71 on February 12, 1939 in Copenhagen, Denmark. The interactive Doodle lets you play a game deciding which item belongs on which side of the pH scale. Spicier items more on the left and the others on the right. I am honestly not sure why the Doodle is up today on May 29th. Here is the GIF version: Anyway, you can learn more about S.P.L. Sørensen at Wikipedia .