Methods and apparatus capable of indicating elapsed time...

Details Methods and apparatus capable of indicating elapsed time... Methods and apparatus capable of indicating elapsed time...

2005-09-13

2009-02-10

Miska, Vit (Department: 2833)

Horology: time measuring systems or devices

Time interval

Electrical or electromechanical

C368S327000, C250S474100

Reexamination Certificate

active

07489596

ABSTRACT:
A method and apparatus of defining a time interval includes providing a source of ionizing radiation that radiates emissions thereof; placing a radiation sensitive display material responsive to ionizing radiation in a close proximity relationship to the source of ionizing radiation whereby the radiated emissions of the source strike the radiation sensitive display material, thereby commencing a time interval; and, measuring changes in characteristics of the radiation sensitive display material that are indicative of the elapsed time.

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