Page:Collected Physical Papers.djvu/73

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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