Standing O for a Master Teacher

To mark his retirement from the Wabash classroom, Professor of Chemistry Richard Dallinger delivered a farewell lecture on October 23—which chemists celebrate as “Mole Day” from 6:02 a.m. to 6:02 p.m. to commemorate Avogadro’s Number (6.02 x 1023), a basic measuring unit in chemistry—to a packed Hays 104.