Ku dhammaystir weedha soo socota: Sanadkii 1881 waxaa loo diray
Bandhigga Caalamiga ah ee Korontada ee Paris, oo qayb ka ah kooxda uu hoggaaminayo Charles Batchelor, wuxuuna ku sii sugnaa Yurub 1882 si uu u rakibo bandhigyada nidaamka Edison ee nalalka korontada ee Antwerp City Hall ee Belgium iyo La Scala ee Milan, iyo meelo kale oo dadweyne.