Мадам Кюри

Greer Garson

Marie Curie

Уолтер Пиджон

Pierre Curie

Henry Travers

Eugene Curie

Albert Bassermann

Professor Jean Perot

Robert Walker

David Le Gros

С. Обри Смит

Lord Kelvin

Мэй Уитти

Madame Eugene Curie

Victor Francen

President of University

Elsa Bassermann

Madame Perot

Reginald Owen

Dr. Becquerel

Van Johnson

Reporter

Margaret O'Brien

Irene Curie - Age 5

James Hilton

Narration Spoken By (voice)

Ruth Cherrington

Swedish Queen (uncredited)

Рэй Коллинз

Lecturer (voice) (uncredited)

Guy D'Ennery

Professor (uncredited)

Джордж Дэвис

Cart Driver (uncredited)

William Edmunds

Cart Driver (uncredited)

Al Ferguson

Man at Accident (uncredited)

Edward Fielding

Board Member (uncredited)

Howard Freeman

Prof. Constant (voice) (uncredited)

Lisa Golm

Lucille (uncredited)

Ilka Grüning

Seamstress (uncredited)

Lumsden Hare

Professor Roget (uncredited)