. Thunder and lighting. The speed with which the luminous globe movesis very slight. It takes from one to four minutes tocover a distance of 5 to 6 centimetres. Sometimes,before reaching the positive point, the globe burstsinto two or more luminous globules, which individuallycontinue their journey towards the positive point. On developing the plate, you will find traced on itthe route followed by the globule, the point of ex-plosion, the routes resulting from the division, theeffluvium round the positive point. Also, if you stopthe experiment before the arrival of the globule atthe positive p
. Thunder and lighting. The speed with which the luminous globe movesis very slight. It takes from one to four minutes tocover a distance of 5 to 6 centimetres. Sometimes,before reaching the positive point, the globe burstsinto two or more luminous globules, which individuallycontinue their journey towards the positive point. On developing the plate, you will find traced on itthe route followed by the globule, the point of ex-plosion, the routes resulting from the division, theeffluvium round the positive point. Also, if you stopthe experiment before the arrival of the globule atthe positive point, the photograph will only give theroute to that point. The globule makes its course the conductor. Ifduring its journey you were to throw powder on theplate—sulphur, for example—the course it followed willbe marked by a line of little aigrettes, looking like aluminous rosary. Of all the known electric phenomena, this is themost analogous with globular lightning. But the really complicated part of the question. PHOTOGRAPH OP THE POSITIVE POLE OF AN ELECTKIC SPAEK. [Page 84.
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectlightning, bookyear19
