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  • 10. All the other planets and stars we've ever seen are round

    10. 我們所見到的所有的行星和星球都是圓的

  • and there's no reason to indicate that the earth should be any different.

    所以認為認為地球不一樣的,都是在無理取鬧

  • 9. Time Zones. Day and night happen at different times at different places on earth

    9. 時區。在世界的不同地方,不同地區的時間都不同,也不同時都是白天/夜晚

  • - in fact, it's always day somewhere and night somewhere else.

    總歸有一些地方正處於白天,另一些 地方正處於夜晚

  • 8. The Coriolis Effect means freely moving things (like cannonballs or hurricane winds) are deflected to the right -

    8. 科里奥利效應,也就是自由移動的物體 (比如炮彈或者龍卷風) 都會向右偏轉 -

  • but only if you're north of the equator. If you're south of the equator, they're deflected left.

    但物體必須處於赤道北邊,如果在赤道南邊,它們就會向左邊偏轉

  • 7. Triangles. If you walk 10,000km straight along the earth's surface,

    7. 球面三角。如果你沿著地球表面向前走一萬公里

  • turn 90° to your right, walk 10,000km more, turn right again

    再向右轉 90 度,再走上 一萬公里,還是向右轉

  • and walk another 10,000km, you will be back to where you started, having successfully made a triangle with three 90° angles.

    又走上一萬公里,那麼你將會回到出發的 地方,此時你用三個直角構造了一個三角形

  • As any geometry student can tell you, this is impossible on a flat surface.

    那些學地理的學生會告訴你,在平面上,這是不可能發生的

  • 6. The sun, in general, gets lower and lower in the sky as you travel away from the equator

    6. 太陽。總的來說,天空中太陽的位置,在你和赤道距離逐漸增加時越来越低

  • and you can use this to directly measure the earth's curvature.

    你可以以此來測量地球的彎曲程度

  • Pick two places a few hundred miles directly north and south of each other

    選擇同一經度上的兩個相距 幾百公里的地點

  • and at noon, measure the shadows cast by a vertical meter-stick at each location.

    中午時,在兩個地方放置豎直木棒並 測量投影的長度

  • You can use the shadow-lengths to figure out the angle between the sticks

    你可以用所測量的影長和實際長度經過計算,得到兩根棒間的夾角

  • and once you add in how far apart they are, you can calculate the earth's curvature.

    一旦你將兩根木棒間距離加到計算過程中,就可以計算出地球的彎曲程度。

  • 5. The stars at night change as you go north or south - for example, Orion is upside down if you're in Australia!

    5. 夜晚,天空中的星星和你所處的緯度有關。 舉例來說,在澳大利亞看,獵戶星座 (和北半球相比) 倒了過來!

  • 4. Ferdinand Magellan (and many people afterwards) circumnavigated the earth.

    4. 麥哲倫 (Ferdinand Magellan) 和很多後人都曾環遊世界

  • That means he left headed west, continued going west, and came back to where they started, still going west .

    也就是說,船隊在出發時向西航行,航程中也一直向西,最後 他們回到了出發點,此時航向仍然向西

  • (Actually, Magellan was dead, but one of his ships - led by Juan Sebastián Elcano - finished the journey.)

    (實際上,航程結束時麥哲倫早就歸西了,而航程結束時,船隊的領航者是 Juan Sebastián Elcano 。)

  • If you head west and circumnavigate the earth yourself,

    如果你一直向西航行獨自環遊地球

  • you'll be able to tell because you'll observe one fewer sunrise than everyone who stays at home.

    你就能明白,因為你宅在家的人少經歷一次日出

  • 3. The horizon. Ships on the ocean or tall Chicago buildings viewed over Lake Michigan disappear bottom-first.

    3. 地平線。從密歇根湖看海上航行的船或者是芝加哥大樓,它們都是先從底部消失

  • And you can see the sunset twice if you watch it lying down and then quickly stand up.

    你也能夠看到兩次日落之景,如果你先躺下,然后迅速站起来

  • The simple fact is,

    道理很簡單

  • if the earth were flat, there wouldn't be a horizon beyond which things could disappear

    如果地球是個平面,我們就不會看到 物體在地平面消失的場面

  • so you'd be able to see all of Chicago from across Lake Michiganas well as the rocky mountains.

    同时在密歇根湖的另一邊,你不僅能看到整個芝加哥,也能看到洛磯山脈。

  • 2. During a lunar eclipse, the shadow of the earth on the moon is curved.

    2. 在月食的過程中,地球投射在月球上的陰影是彎曲的。

  • And... 1. We know the earth is round because we have photographic evidence.

    1. 我們之所以知道地球圓的是因為:我們有地球的照片

10. All the other planets and stars we've ever seen are round

10. 我們所見到的所有的行星和星球都是圓的

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10 個原因告訴你,為什麼我們知道地球是圓的?(TOP 10 REASONS Why We Know the Earth is Round)

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