| Show T I 1 wr professor Pio fessor hoppe reports in the atchie fur post und telegraphic a new nev example of the mechanical mechi power of a lightning in a storm thit raged at il in the halt a bolt en tiling it a hougo struck a wooden post on oil whose top ikc metallic nails naila one sixth of an inch in dian diameter leter melted to no forge could have effected this to bang it about an electric current of amperes intensity and 20 N tension mut must hae hac passed through the supposing that the action of the lightning lasted a second the dyna dynamic ml power thus ade eloped inas equal to 5 horse powei but it if as Is more hiob ible the dis charge lasted oab one tenth of a see sec ond and we me get a rate of vork mork that does not no fall shot t of 50 horse power |
