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Digitale Medien

Physical Influence and Mental Reference (1936)

Morgan, C. Lloyd

Cambridge : Cambridge University Press

Philosophy 11 (1936), S. 176-185

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ISSN: 0031-8191

Quelle: Cambridge Journals Digital Archives

Thema: Philosophie

Notizen: In a scientific discussion of the processes which we (or some of us) designate “vital,” attention is concentrated on an interpretation of that which happens within a relational system of physical influence. In a scientific discussion of the processes which we reflectively distinguish as “mental,” attention is directed to what occurs in a relational system of psychological reference. We should seek to distinguish each from the other in any given context where both are in evidence.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1017/S0031819100033556

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Digitale Medien

Time studies of ionization processes (1956)

Morgan, C. Grey

Springer

Flow, turbulence and combustion 5 (1956), S. 18-22

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ISSN: 1573-1987

Quelle: Springer Online Journal Archives 1860-2000

Thema: Maschinenbau

Notizen: Summary Measurements of the temporal growth of ionization between parallel plane electrodes in hydrogen have been made. The results show that for low values (∼ 40 V/cm mm Hg) of the ratio of electric fieldE to gas pressurep the growth times can be short (≤ 1Μs for over-voltagesδ V ∼ 1 %) while at values ofE/p ∼ 300 V/cm mm Hg the times are of the order of milli seconds withδV ∼ 5%. Comparison of the experimental data with Davidson's mathematical analysis of current growth based upon the action of primary and secondary ionization processes shows that the relative significance of the possible secondary processes changes asE/p is altered. For the low values ofE/p, the predominant secondary process contributing to the growth was found to be photoelectric emission from the cathode, but with increasing values ofE/p the role of positive ion interaction with the cathode becomes increasingly important. No single secondary process was exclusively operating in any of the conditions examined.