Wireless telegraphy, the phonograph and the radio are based on this law. 無線電報,留聲機和無線電廣播都基於這個法則。
He experimented for years in his own laboratory,while he was still a young man, he invented wireless telegraphy. 他在他自己的實驗室里成年累月的作實驗,之後,當他還是個年輕人的時候,他發明了無線電報。