In approximately what year was the first maser bui...

C

- Hướng dẫn giải

Phương pháp giải:

Giải chi tiết:

C

Khoảng năm nào thiết bị khuếch đại ánh sáng đầu tiên được hình thành? -> 1953

“Although he thought of the key idea in 1951, the first maser was not complete until a couple of years later. Before long, many other physicists were building masers and trying to discover how to produce stimulated emission at even shorter wavelengths.”