Английская Википедия:Absorption wavemeter: история изменений

28 декабря 2023

• текущ.пред. 03:4903:49, 28 декабря 2023‎ EducationBot обсуждение вклад‎ 5008 байт +5008‎ Новая страница: «{{Английская Википедия/Панель перехода}} An '''absorption wavemeter''' is a simple electronic instrument used to measure the frequency of radio waves. It is an older method of measuring frequency, widely used from the birth of radio in the early 20th century until the 1970s, when the development of inexpensive frequency counters, which have far greater accuracy, made it largely obsolete. A wavemeter consists of...»