收音機是發明?????????????????????????????????????

2008-09-20 5:50 am
收音機是發明的?
發明的年份???????

回答 (1)

2008-09-20 6:05 am
✔ 最佳答案
發明年份為1896年.

The world’s first radio receiver (thunderstorm register) was designed by Alexander Stepanovich Popov, and it was first seen at the All-Russia exhibition 1896. He was the first to demonstrate the practical application of electromagnetic (radio) waves, although he did not care to apply for a patent for his invention.


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