The influence of ultra-violet rays on industrial output / by A. Lisle Punch and Russell Wilkinson with the collaboration of R. StC. Brooke and C.S. Myers.

  • Punch, A. Lisle.
Date:
1928?]
Catalogue details

Licence: In copyright

Credit: The influence of ultra-violet rays on industrial output / by A. Lisle Punch and Russell Wilkinson with the collaboration of R. StC. Brooke and C.S. Myers. Source: Wellcome Collection.

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    Output of Workers who icere Benefited. The forms of the work curves of hourly and daily output obtained for each of the 11 girls during the three periods of observation confirm the results derived from the weekly data of output. The work curves of hourly output after treatment indicate for A a reduction of fatigue at the end of the afternoon spell ; for C a reduction of fatigue at the end of the Fig. 1. A.M. P.M. Diagram showing variations in the hourly output measured in pounds. (Worker D.) % morning spell; and for D a reduction of fatigue at the end of both spells. All these workers belong to the group whose output was increased by exposure to ultra-violet rays. The lessened fatigue at the close of each spell of work during and after treatment is illustrated in the case of D in Fig. 1. Instead of the fall that occurs in the continuous curve towards the end of the morning’s and afternoon’s work, the two dotted curves generally show a well- marked rise, indicating lessened fatigue and the ability to spurt as the work draws to a close. Similar beneficial results are revealed by an examination of curves of the daily output of workers of the same group. After treatment A returns on