Colwell, Hector Alfred, Russ, Sidney · London, G. Bell and sons · leaf 39
he curvemay be arbitrarily dividedinto three sections, D, E andF, over which the radiationis practically of one degreeof hardness, and numericalvalues may be apportionedto them for purposes of com-parison. Although nominallya soft bulb, analysisshows that the radiation isheterogeneous, consisting… … 48 72 Mms of Aluminium Tig. 6. and of a ver}^ hardfound in Table 3. THE COEFFICIENT OF ABSORPTION OF THE RAYS. It is convenient to refer to the penetrating power of a beam ofrays in terms of a coefficient * (X), the numerical value of which * The value of \ is obtained as follows : The intensity of…
X-rays -- Physiological effect
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