Awarded annually to the undergraduate student who submits the best photograph or written or other description of some natural physical phenomenon personally observed during the previous year.
AEM Geddes OBE FRSE was on the staff of the Department of Natural Philosophy (the old name for Physics at Aberdeen) from 1909 to 1955. The Prize was inaugurated by his daughters.
His speciality was meteorology and his 1921 book Meteorology: An Introductory Treatise has numerous examples relevant to Aberdeen. It was illustrated by George Aubourne Clarke's internationally acclaimed cloud photographs, taken at King's College.
Since "a picture is worth a thousand words", the prize has gone to the best photograph in recent years.