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    影片分級

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    • C2 高級
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    magnetic field

    US /mæɡˈnɛtɪk fild/

    ・

    UK /mæɡˈnetik fi:ld/

    A2 初級
    n.名詞磁場
    The compass needle aligns itself with the Earth's magnetic field.

    影片字幕

    核融合發電大解密：是未來還是泡影？ (Fusion Power Explained – Future or Failure)

    06:16核融合發電大解密：是未來還是泡影？ (Fusion Power Explained – Future or Failure)
    • The first type of reactor uses a magnetic field to squeeze a plasma in a donut-shaped chamber where the reactions take place.

      他們就變成電漿了，在電漿裡原子核和電子

    • The first type of reactor uses a magnetic field

      第一類型的反應爐的使用磁場來

    B2 中高級

    來自太空的死亡 — 認識伽瑪射線爆！ (Death From Space — Gamma-Ray Bursts Explained)

    07:14來自太空的死亡 — 認識伽瑪射線爆！ (Death From Space — Gamma-Ray Bursts Explained)
    • In these environments the rotation winds up the magnetic field, which funnels hot jets of particles travelling at nearly the speed of light.

      伽瑪射線爆發伴隨著宇宙中最劇烈的死亡災難

    • In these environments, the rotation winds up the magnetic field, which funnels hot jets of particles,

      在這樣的環境中，高速的旋轉帶起了強大的漏斗狀磁場，射出炙熱的粒子

    B2 中高級

    量子電腦大解密：人類科技的極限在哪裡？ (Quantum Computers Explained – Limits of Human Technology)

    07:17量子電腦大解密：人類科技的極限在哪裡？ (Quantum Computers Explained – Limits of Human Technology)
    • A qubit can be any two-level quantum system, such as a spin in a magnetic field or a single photon.

      簡而言之，一個電晶體只是一個電流開關

    • such as a spin and a magnetic field or a single photon

      像是自旋和磁場，或是單一的光子

    B2 中高級

    布萊恩·考克斯 — 為何我們需要探險家？[多國字幕] (Brian Cox — Why we need the explorers [Multi sub])

    16:30布萊恩·考克斯 — 為何我們需要探險家？[多國字幕] (Brian Cox — Why we need the explorers [Multi sub])
    • But by measuring the way that Europa interacts with the magnetic field of Jupiter and looking at how those cracks in the ice that you can see there on that graphic move around, we've inferred very strongly that there's an ocean of liquid surrounding the entire surface of Europa.

      就是從我們對太陽系和宇宙的探索之中

    • with the magnetic field of Jupiter,

      磁場交互作用下

    B1 中級

    真正的北極在哪裡？ (Where is the True North Pole?)

    03:54真正的北極在哪裡？ (Where is the True North Pole?)
    • These currents are heavily influenced by the rotation of the Earth, so the magnetic field they generate roughly aligns with the Earth's axis of rotation—but not precisely, and

      會指向 "磁北極“，也就是指 地球裡的南極 因為異極相吸。

    • This pole, together with the geomagnetic South Pole (which is on the exact opposite side of the Earth), represents the general overall trend of the Earth's magnetic field, especially as it extends into space.

      而且正在以每年大概55公里 移動朝向俄羅斯。

    B1 中級

    地球是空心的？！？ 🤯 (What if the Earth were Hollow? )

    03:59地球是空心的？！？ 🤯 (What if the Earth were Hollow? )
    • Well, with its entire mass concentrated in a thin shell right under our feet, the Earth wouldn't have a magnetic field anymore, because that comes from the molten iron core.

      但它只下去了12公里，這只是曼哈頓的三分之二長度。他們有

    • wouldn't have a magnetic field any more, because that comes from the molten iron core. So we'd

      不會再有磁場了，因為那是來自於熔融的鐵芯的。所以我們

    B1 中級

    極光之科學與絕美！✨ (The Science and Beauty of Auroras)

    04:54極光之科學與絕美！✨ (The Science and Beauty of Auroras)
    • more enjoyable. Then because that magnetic field we have nice things like an atmosphere and we're much less burnt-to-a-crisp

      生活得更愉快。因為這個磁場，我們有個如大氣般的好東西並且由於無盡的

    • Now, because of that magnetic field, we have nice things like an atmosphere,

      讓我們不會被烤焦。但儘管如此

    B1 中級

    BBC 六分鐘學英語 2016年3月3日 - 火星上的生活！ (BBC 6 Minute English March 03, 2016 - Life on Mars)

    06:05BBC 六分鐘學英語 2016年3月3日 - 火星上的生活！ (BBC 6 Minute English March 03, 2016 - Life on Mars)
    • The Earth has a strong magnetic field created by its hot molten core, or centre,

      生長在極端環境

    • Why doesn't it have a magnetic field?

      因為太陽輻射– 光或熱

    B1 中級

    關於地球的一切！你絕對不能錯過！ (Everything You Need to Know About Planet Earth)

    07:22關於地球的一切！你絕對不能錯過！ (Everything You Need to Know About Planet Earth)
    • Then there's Earth's magnetic field.

      百分之69的淡水都是冰或雪

    • They cause a magnetic field that sort of stabilises itself according to the laws of electrodynamics.

      所以，當地球漸漸冷卻

    B2 中高級

    電動車原理是什麼？| Tesla Model S (How does an Electric Car work ? | Tesla Model S)

    10:24電動車原理是什麼？| Tesla Model S (How does an Electric Car work ? | Tesla Model S)
    • The three-phase alternating current in the coils produces a rotating magnetic field.

      您可以在這裡看到電動機的結構細節

    • The Tesla motor produces a four-pole magnetic field.

      轉子只是由端環短路的導電棒的集合

    B2 中高級