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COLLECTED PHYSICAL PAPERS
53
All observations agreed in showing that as the thickness of air-space was gradually decreased, the transmitted component was increased, with a corresponding decrease of the reflected portion. I give below two sets of observations, in which the receiver acted better than usual.
Radiator R2; distance between the sparking surfaces = 10·1 mm.
Thickness of air-space in terms of number of cards. | Thickness in mm. | Galvanometer deflection due to the reflected portion. | Galvanometer deflection due to the transmitted portion. | |||||
1 | 0·45 | 0 or very slight. | Against the stop. | |||||
2 | 0·90 | Slight. | „„ | |||||
4 | 1·8 | 80 | 160 | |||||
8 | 3·6 | 145 | 150 | |||||
10 | 4·5 | 150 | 120 | |||||
12 | 5·4 | 160 | 100 | |||||
16 | 7·2 | Against the stop | 30 | |||||
18 | 8·1 | „„ | 0 | |||||