All bodies are transparent to this agent…. For brevity’s sake I shall use the expression ‘rays’; and to distinguish them from others of this … Wilhelm Röntgen

All bodies are transparent to this agent…. For brevity’s sake I shall use the expression ‘rays’; and to distinguish them from others of this … Wilhelm Röntgen

All bodies are transparent to this agent.... For brevity's sake I shall use the expression 'rays'; and to distinguish them from others of this ... Wilhelm Röntgen

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