Stock Photo - Nine-centimetre block of glass pierced by the spark from Ruhmkorff's coil, experiment at the Robin theatre, Paris, France, illustration from L'Illustration, Journal Universel, No 1117, Volume XLIV, July 23, 1864.

Stock Photo: Nine-centimetre block of glass pierced by the spark from Ruhmkorff's coil, experiment at the Robin theatre, Paris, France, illustration from L'Illustration.

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