The same spark is seen also at the other end of the wire, if touching another apparatus.
但是在实际上，凭着我们的肉眼，无论如何是看不出电线两端火花在出现时间上的差别的。
Think of the ionosphere and the ground as the terminals on the battery and you put a wire between those two terminals and current flows, and literally you get a spark.
把电离层和地面想象成电池的两极。 用一根导线连接这两极的话，电流就会流动，然后就会产生火花。
A curve synthetic interpolation theory with compensation of wire radius and spark gaps had been expounded theoretically and practically.
从理论和实践上论述了具有丝半径、放电等各种间隙补偿功能的曲线合成插补理论。
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