Comparativ (E-Journal)
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An alpha-ray source and its dosimetry.
No full textAn α-ray source was constructed for irradiation of liquids and of solid films. The dosimetry of liquids was carried out by an actinometric method and of solids by a modification of this method. The radial variation of dose over a circular specimen of film was measured by a radiographic method and the results agreed satisfactorily with values calculated from theoretical considerations. The axial variation of dose in a film was also found by the modified actinometric method
Effects of independent variations in stimulus and response probability
No full textThe time taken by human beings to react to one of a number of possible signals increases with the number of alternatives involved. The effects of jointly varying stimulus and response uncertainty have been long known and adequately discussed1,2. In the present investigation these were varied independently, by using situations where the same response was required for a number of stimuli. The number of responses, and the ratio of response/stimuli were varied. © 1959 Nature Publishing Group