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  • 我的新發現作文

      一天, 我玩電子玩具時,我問媽媽單簧管是哪一個,媽媽指著一個帶著小玻璃管的電板,我便拿起它,按《450種拼法指南》書拼起來,當我拼完看如何操做時看到如許一句話:把磁鐵接近或接觸單簧管,單極電燈亮……我試了一下,公然不錯,我看見玻璃管里有兩個小鐵片,本來它充任了開關的感化,我又換成開關。這時電燈暗了一些。這一現象被我看見到了,我想:為什么開關節制時電燈暗,而單簧管節制時電燈亮呢?是單簧管的感化仍是磁鐵的感化?我拿了一大一小兩個磁鐵,用小磁鐵接觸時電燈并沒有大磁鐵亮,但仍是沒有第一次亮。我想了一會兒,突然恍然大悟:本來我適才晃了一下磁鐵。我試了一下,公然如斯,是磁鐵的感化!我又換上開關,用磁鐵正在電線上來回推,電燈仿照照舊很亮!我有換了一些電動的動西試了一下,電流仿照照舊很強。我發覺了只需將磁鐵放正在電線上能夠加強電流!

      從這個發覺中,我了一個事理:只需留神察看,就會有心發覺,處處留神皆學問.只需大師留神察看,必然會像我一樣會有發覺,獲得學問自從我有了一套電子集成電玩具后,我有了一個新發覺。

      一天, 我玩電子玩具時,我問媽媽單簧管是哪一個,媽媽指著一個帶著小玻璃管的電板,我便拿起它,按《450種拼法指南》書拼起來,當我拼完看如何操做時看到如許一句話:把磁鐵接近或接觸單簧管,單極電燈亮……我試了一下,公然不錯,我看見玻璃管里有兩個小鐵片,本來它充任了開關的感化,我又換成開關。這時電燈暗了一些。這一現象被我看見到了,我想:為什么開關節制時電燈暗,而單簧管節制時電燈亮呢?是單簧管的感化仍是磁鐵的感化?我拿了一大一小兩個磁鐵,用小磁鐵接觸時電燈并沒有大磁鐵亮,但仍是沒有第一次亮。我想了一會兒,突然恍然大悟:本來我適才晃了一下磁鐵。我試了一下,公然如斯,是磁鐵的感化!我又換上開關,用磁鐵正在電線上來回推,電燈仿照照舊很亮!我又換了一些電動的元件試了一下,電流仿照照舊很強。我發覺了只需將磁鐵放正在電線上能夠加強電流!

      從這個發覺中,我了一個事理:只需留神察看,就會有所發覺,處處留神皆學,只需大師留神察看,必然會像我一樣會有發覺,獲得學問。

    未經允許不得轉載:小學生作文網 » 我的新發現作文

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