During this short time the mirror moves, though but little, and in it the exit-spark is seen as if it had moved aside from the entrance-spark.
在这极短的时间内,镜子是转动的,而且因为转动的间隔很短暂,所以看上去仿佛那个“出端火花”是从“入端火花”的位置移动出来的。
During this short time the mirror moves, though but little, and in it the exit-spark is seen as if it had moved aside from the entrance-spark.
在这极短的时间内,镜子是转动的,而且因为转动的间隔很短暂,所以看上去仿佛那个“出端火花”是从“入端火花”的位置移动出来的。
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