Brechner, Claude H., 1887- [from old catalog] · Boston, New York [etc.] Allyn and Bacon · leaf 169
that the pressure started at zero, then graduallyincreased in the positive direction until the loop had made aquarter turn. Here the pressure was the highest, but imme-diately began to diminish until at the half turn it had dieddown until it was again zero. At this position the pressurebegan to… … Figure 146. — Photograph of a Hand Generator.
Physics
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