BRANLY (Édouard). Variations in the conductivity of insulato - Lot 262

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  3. BRANLY (Édouard). Variations in the conductivity of insulato - Lot 262
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BRANLY (Édouard). Variations in the conductivity of insulato - Lot 262
BRANLY (Édouard). Variations in the conductivity of insulators under various electrical influences. [In Journal de la Société française de physique, 1891, séance du 17 avril 1891]. 7-page, in-8 booklet, stapled, thread-sewn, under blue paper cover, midnight-blue half-chagrin folder and Devauchelle slipcase. Discovery of the principle of radioconduction by Édouard Branly (1844-1940): [Édouard Branly] discovered that iron filings, which normally conduct electricity very poorly, became good conductors when subjected to the effect of Hertzian waves. This is how he describes his discovery [...] In a way, I had created the transmitting and receiving apparatus of T.S.F. (Philippe Zoummeroff in En français dans le texte, n°315). The text in question appears on pp. 135-141 of the Journal de la Société française de physique.
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