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在十年級中對電磁波概念的形成和对無線电播送及接收的講述,应当在同學易於了解和佈置明顯的表演實驗的基礎上來進行。我們可以使用超短波真空管振盪器來產生電磁振盪。這種類型的振盪器的一種已述於玆瓦雷金(Б.С.Зворыкин)所作之表演設備“電磁振盪及電磁波”一文中。我們認為在學校中,用不同形式的表演實驗设備去驗證物理課程中同一的標題是適宜的。所以在本文中,描述一種新的表演用超短波真空管振盪器;此器構造極為簡單,同時能將近代無线电技術中所用的超短波振盪器的特性具體地表現出来。振盪器所用的零件極少。且其中的真空管使用極流行的類型,因此在任何學校中都易於製造。生產這種振盪器也可由技術工業部門或
The formation of the electromagnetic wave concept in the tenth grade and the narration of radio transmission and reception should be based on the students’ easy understanding and arrangement of obvious performance experiments. We can use ultrashort vacuum tube oscillator to generate electromagnetic oscillations. One type of oscillator of this type is described in the article “Electromagnetic oscillations and electromagnetic waves” by performance equipment in Б.С. Зворыкин. We think in schools it is appropriate to use different forms of performance experiment equipment to verify the same title in a physics course. Therefore, in this paper, a new ultrashort vacuum tube oscillator for performance is described; it is extremely simple to construct and the characteristics of the ultrashort wave oscillator used in modern radio technology can be demonstrated concretely. Oscillators use very few parts. And the vacuum tubes are very popular and therefore easy to manufacture in any school. The production of such oscillators can also be done by the technical industry department or