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    • Between Blondel-Rey and Broca-Sulzer Between Blondel-Rey and Broca-Sulzer
    Between Blondel-Rey and Broca-SulzerTwo papers in the early 1900's bracket the problem of the visibility of a flash of light. ... This sent B&R into a rationalist ecstasy, and they postulated their famous equation for the intensity of a just visible flash: I=k2+k1/t. ... ...

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