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I can add historical knowledge about this page.
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--2--
it is possible there may be other radio active material
in the air, such as radium chloride or radium bromide or
possibly some forms of thorium. The question I wish to
ask is radium sulphate the best material with which to
calibrate the ionization chamber for solids?
Sincerely yours,
games E. was
( James E. Ives)
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Document data
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- 75724277
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Context sent to Scholar
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"ocrText": "--2--\nit is possible there may be other radio active material\nin the air, such as radium chloride or radium bromide or\npossibly some forms of thorium. The question I wish to\nask is radium sulphate the best material with which to\ncalibrate the ionization chamber for solids?\nSincerely yours,\ngames E. was\n( James E. Ives)"
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