T H E U N I V E R S I T Y O F C H I C AG O | P H YS I C A L S C I E N C E S D I V I S I O NT H E F I V E H U N D R E D T H I R T Y- F O U R T H C O N V O C AT I O NW E D N E S DAY, J U N E 9, 2 02 1