When Morse finally completed his telegraphic instrument, he went before Congress to show that it worked.He sent a message over a wire from Washington to Baltimore. The message was: "What hath God wrought?" This was on May twenty-fourth, eighteen forty-four.当摩斯最终完成了他的电报装置,他在国会进行了展示.他从华盛顿通过电缆发了一条消息到巴尔的摩.消息内容就是:"上帝创造了何等奇迹?"这是在1844年5月24日.
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