Radiation pyrometer and temperature standard therefor

Claim 1

IN COMBINATION WITH AN OBJECT SUBJECT TO EXTREMELY RAPID HEATING, A HIGH SPEED MOTION PICTURE CAMERA OPERABLE AT A PREDETERMINED NUMBER OF FRAMES PER SECOND, HAVING A MOTION PICTURE FILM THEREIN PHOTOGRAPHICALLY RESPONSIVE TO VARIATIONS IN COLOR TEMPERATURES OF AN OBJECT BEING PHOTOGRAPHED, A PLURALITY OF DIFFERENTLY HEATED COLOR TEMPERATURE REFERENCE INDICATORS DISPOSED IN PREDETERMINED ADJACENT RELATION IN PROXIMITY TO SAID OBJECT TO BE HEATED, SAID CAMERA FIXED TO SIMULTANEOUSLY PHOTOGRAPH ON SAID FILM, SAID INDICATORS AND SAID OBJECT DURING THE HEATING THEREOF AT SAID PREDETERMINED NUMBER OF FRAMES PER SECOND, WHEREBY WHEN SAID FILM IS DEVELOPED SAID FILM PROVIDES A CONTINUOUS PROGRESSIVE COMPARISON PHOTOGRAPHIC RECORD OF THE CHANGING COLOR TEMPERATURE OF SAID OBJECT AND THE FIXED COLOR TEMPERATURES OF THE COLOR TEMPERATURE REFERENCE INDICATORS FOR COMPARISON, IN WHICH THE CHANGES IN COLOR TEMPERATURE OF SAID OBJECT ON THE FILM IN EACH SUCCESSIVE FRAME RECORDS THE RATE AND AREA OF CHANGE IN COLOR TEMPERATURE DURING EACH PREDETERMINED FRACTION OF A SECOND, DETERMINED BY THE NUMBER OF PICTURES TAKEN PER SECOND, WHEREBY A COMPLETE RECORD OF COLOR TEMPERATURE CHANGES OF THE OBJECT AND THE RATE OF SUCH CHANGES PER UNIT OF TIME IS ACCOMPLISHED IN WHICH