What was the reason? Had some chemical reaction occurred between these substances and the silver bromide, resulting in new compounds which resisted irradiation?

    By no means! No chemical reaction had occurred, and the sensitivity of the plate was fully restored by washing it thoroughly with water.

    In a word, nobody knows yet exactly what. happened. 

    It is only a hint at an entirely unexpected possibility of radiation protection.

    And we already conjure up a picture in our mind's eye of a man dressed in an ordinary suit impregnated with a special chemical compound, a compound capable of stopping death rays.

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