الإعلان التشويقي
طاقم التمثيل
Charles Trowbridge
Board Member (uncredited)
Walter Pidgeon
Pierre Curie
Ray Collins
Lecturer (voice) (uncredited)
George Davis
Cart Driver (uncredited)
Robert Walker
David Le Gros
Van Johnson
Reporter
William Edmunds
Cart Driver (uncredited)
James Kirkwood
Board Member (uncredited)
María Pagés
Woman at Accident (uncredited)
Lisa Golm
Lucille (uncredited)
Henry Travers
Eugene Curie
Lumsden Hare
Professor Roget (uncredited)
Almira Sessions
Madame Michaud (uncredited)
Michael Visaroff
Proud Papa (uncredited)
Frederick Worlock
Businessman (uncredited)
Margaret O'Brien
Irene Curie - Age 5
Al Ferguson
Man at Accident (uncredited)
George Meader
Singing Professor (uncredited)
Albert Bassermann
Professor Jean Perot
Ruth Cherrington
Swedish Queen (uncredited)
Teddy Infuhr
Son (uncredited)
Wyndham Standing
King Oscar (uncredited)
James Hilton
Narration Spoken By (voice)
C. Aubrey Smith
Lord Kelvin
Reginald Owen
Dr. Becquerel
Howard Freeman
Prof. Constant (voice) (uncredited)
Arthur Shields
Businessman (uncredited)
Ray Teal
Driver (uncredited)
Guy D'Ennery
Professor (uncredited)
Ilka Grüning
Seamstress (uncredited)
Francis Pierlot
Monsieur Michaud (uncredited)
Alan Napier
Dr. Bladh (uncredited)
Moroni Olsen
President of Businessman's Board (uncredited)
Gene Lockhart
Bit Part (uncredited)
Marek Windheim
Jewelry Salesman (uncredited)
Victor Francen
President of University
Elsa Bassermann
Madame Perot
Gigi Perreau
Eve at 18 Months (uncredited)
Greer Garson
Marie Curie
Edward Fielding
Board Member (uncredited)
Miles Mander
Businessman (uncredited)
Eustace Wyatt
Doctor (uncredited)
May Whitty
Madame Eugene Curie
Isabel La Mal
Woman at Accident (uncredited)