as Marie Curie

as Pierre Curie

as Eugene Curie

as Professor Jean Perot

as David Le Gros

as Lord Kelvin

as Madame Eugene Curie

as President of University

as Madame Perot

as Dr. Becquerel

as Reporter

as Irene Curie - Age 5

as Narration Spoken By (voice)

as Tall Woman (uncredited)

as Man at Accident (uncredited)

as Swedish Queen (uncredited)

as Lecturer (voice) (uncredited)

as Professor (uncredited)

as Cart Driver (uncredited)

as Professor (uncredited)

as Assistant Tailor (uncredited)

as Woman at Accident (uncredited)

as Man at Accident (uncredited)

as Cart Driver (uncredited)

as Board Member (uncredited)

as Man at Accident (uncredited)

as Board Member (uncredited)

as Prof. Constant (voice) (uncredited)

as Perot Granddaughter (uncredited)

as Perot Granddaughter (uncredited)

as Lucille (uncredited)

as Seamstress (uncredited)

as Professor Roget (uncredited)

as Son (uncredited)

as Board Member (uncredited)

as Woman at Accident (uncredited)

as Bit Part (uncredited)

as Businessman (uncredited)

as Singing Professor (uncredited)

as Master Michaud (uncredited)

as Wedding Guest (uncredited)

as Photographer (uncredited)

as Dr. Bladh (uncredited)

as President of Businessman's Board (uncredited)

as Woman at Accident (uncredited)

as Eve at 18 Months (uncredited)

as Monsieur Michaud (uncredited)

as Woman at Accident (uncredited)

as Nurse (uncredited)

as Madame Michaud (uncredited)

as Businessman (uncredited)

as King Oscar (uncredited)

as Driver (uncredited)

as Board Member (uncredited)

as Proud Papa (uncredited)

as Jewelry Salesman (uncredited)

as Businessman (uncredited)

as Doctor (uncredited)