A manual of practical medical electricity : the Röntgen rays and Finsen light . Fig. 150.—Hand showing Fig. 151.—Dislocation of Terminal Phalanx of Thumb» 22 338 A Manual of Practical Medical Electricity the distance ; at double the distance they will only beone-quarter as powerful. The reason why charged bodies are discharged by X raysis probably because the rays make the surrounding air aconductor ; they destroy pro tern, the insulating propertiesof the air, and thus the electricity leaks away from thecharged Their action is somewhat akin to that ofa flame {Nature, March, 189
A manual of practical medical electricity : the Röntgen rays and Finsen light . Fig. 150.—Hand showing Fig. 151.—Dislocation of Terminal Phalanx of Thumb» 22 338 A Manual of Practical Medical Electricity the distance ; at double the distance they will only beone-quarter as powerful. The reason why charged bodies are discharged by X raysis probably because the rays make the surrounding air aconductor ; they destroy pro tern, the insulating propertiesof the air, and thus the electricity leaks away from thecharged Their action is somewhat akin to that ofa flame {Nature, March, 1897, Lord Kelvin). They donot, according to my experiments, destroy the insulatingproperties of paraffin or ebonite, or of solid insulators, northat of the skin. The resistance of the skin to a constantelectrical current remains the same. More recently, Professor Minchin in the Electrician,April 9, 1897, has described some experiments which tendto show that at any rate in certain special conditions theresistance of still air is not lowered to a conducting valueby the passage of X rays. Any conductivity im
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