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  • Hey there!

    哈囉!

  • Welcome to Life Noggin.

    歡迎來到 Life Noggin

  • Right now you're probably watching this video from somewhere on Earththat big,

    現在你可能在地球的某處觀看這個影片

  • round, beautiful planet you humans call home.

    這個你們人類稱為「家」的巨大、圓形、漂亮的星球

  • But how do you know the Earth is round?

    但你是怎麼知道地球是圓的?

  • Your senses would tell you that it's flat.

    你的感覺會告訴你地球是平的

  • After all, if you stand in a large field, it actually looks pretty flat.

    畢竟,當你站在一個寬闊的場地,地面確實是很平的

  • And if you walk through that field, it doesn't feel like you're going over a curve.

    而且當你走過這塊地,你並不會覺得自己正在走過弧線的地面

  • Could it be that the Earth is actually flat?

    地球會不會真的是平的呢?

  • Well, let's try an experiment.

    讓我們來做一個實驗

  • Say you're standing in a field outside of Chicago.

    假設我們說你站在芝加哥外的一個地方

  • If the Earth is flat, you should be able to see southwest and see some of the tallest

    如果地球是平的,你應該能看向西南方以及

  • points in the United States, the Rocky Mountains.

    美國國內某些最高點:洛磯山脈

  • But the thing is, you can't.

    但你無法

  • That's because of the curvature of the Earth.

    原因來自於地球的曲度

  • You'll notice a similar problem if you stand on a seashore and try to watch a boat sail

    同樣的問題也會發生在,當你站在海岸邊並試著看著一艘船

  • away.

    駛離

  • After a while, it will disappear from view.

    過了一會,船就會消失在視線中

  • And not only that, but the bottom of the boat will vanish before the top as it

    且不只是這樣,船的底部會比頂部更早消失在眼前

  • goes over what's called the horizon linethe place where the sky meets the Earth.

    這種情形發生在船駛過所謂的地平線的時候,也就是天空與地球的交會處

  • For someone who is six feet tall, the horizon line is only three miles away.

    對一個 6 呎高的人來說,地平線只有三英里遠

  • But the higher up you are, the farther you can see over the Earth's curve.

    但越高的人將可看到地球曲面更遠的地方

  • This is why standing on a tall mountain might allow you to see over 100 miles while standing

    這就是為甚麼當你站在高山上可以讓你看到超過 100 呎的地方,

  • in a field will only let you see a short distance.

    而站在平地只能看到近距離的地方

  • It also means that taller people can see slightly farther than shorter people.

    這也表示高的人可以比矮的人稍微看得更遠

  • Good thing my animator can make me any height!

    幸好我的動畫師讓我可以擁有任何身高!

  • See, I'm like that one ant dude.

    看,我可以變得像蟻人

  • The thing is, none of this is new information.

    問題是,這些都不是新知

  • We've known about the planet's curvature for over 2000 years.

    我們知道地球的曲度已經 2000 年了

  • The Ancient Greeks figured out that the Earth is round based on several pieces of evidence,

    古希臘人根據一些證據斷定地球是圓的

  • including their observations of ships going over the horizon line. The scientist Aristotle,

    包括船駛離地平線的觀察,科學家亞里斯多德

  • writing in 350 BCE, noted that during an eclipse, the Earth makes a round shadow on the moon.

    在公元前 350 年寫到,日蝕發生期間,地球會在月球表面產生圓的陰影

  • He also realized that stars appear in different places depending on where you are standing.

    他同樣了解到,根據你站的位置,星星會在不同地方出現

  • For example, he saw stars in Egypt that weren't visible farther north.

    舉例來說,他在埃及無法觀察到更北方的星星

  • Roughly 100 years later, humans got their first measurements of the Earth's curve

    大約在 100 年後,人類首次能夠測量地球的曲度

  • from another Greek mathematician, Eratosthenes.

    這個實驗由另一位希臘數學家 Eratosthenes 所執行

  • He had heard of a city in southern Egypt where, at noon on the summer solstice, the sun was

    他聽說埃及南方的一個城市,在夏至的正中午

  • directly overhead and the buildings cast no shadows.

    太陽會出現在頭頂的正上方且建築物不會出現任何陰影

  • But at the same time in the northern city of Alexandria, the buildings DID cast shadows.

    同一時刻在 Alexandria 的北方城市,建築物「確實」產生陰影

  • meaning the sun was at a different angle in the sky.

    這表示太陽出現在天空中的不同角度

  • On the day of the solstice, Eratosthenes stuck a stick in the ground in Alexandria and measured

    在至點的當天, Eratosthenes 在 Alexandria 的地上插了一個枯枝並且

  • the angle of its shadow.

    量測枯枝的陰影角度

  • Using the distance between the two cities, he was able to calculate the curvature of

    利用兩城市之間的距離,他能夠計算出

  • the Earth!

    地球的曲度!

  • You could actually perform this same experiment if you have a friend living a few miles away.

    如果你有位住在幾英里遠的朋友,你同樣也可做這個實驗

  • Or, if your friend is several hours west, you can get more proof that the Earth is round

    或是當你的朋友住在西方晚這邊幾小時的地方,你可以獲得更多地球是圓的的證據

  • by calling them at sunset and asking how the sky looks.

    在日落的時候打給他並問天空看起來怎麼樣

  • It will still be daylight there because of the Earth's curve.

    因為地球曲度的關係,那邊仍然是白天

  • And there's one more piece of clear evidence for the planet's shapepictures taken

    還有一個更清楚的證據是地球的形狀 –

  • from space.

    從外太空拍的地球照片

  • Maybe you're not on Earth after all and are actually watching this video from the

    或許到頭來你不在地球上,實際上正在太空站上觀看這段影片

  • space stationin which case, please leave a comment, because that's so cool.

    不管在什麼情況看這段影片,請在下方留言,因為太酷了

  • If that's true, you'll have a bird's-eye view of this giant blue and green globe.

    如果是真的,你將能鳥瞰這藍色與綠色的巨大地球

  • What a beautiful place to live.

    多麼漂亮的居住地方

  • So what other myths about Earth do you want me to explore?

    所以,有什麼其他關於地球的迷思是你想讓我去探索的?

  • Let me know in the comment section below.

    請在下方的留言處讓我知道

  • Do you love science?

    你喜歡科學嗎?

  • Do you love video games?

    你喜歡電玩嗎?

  • If so, you'll HAVE to check out Play Noggin,

    如果是的話,你必須看看 Play Noggin

  • which is an excellent combination of the two.

    他是兩者的最好結合

  • Julian recently explored the idea of mind control.

    Julian 最近探索了思想控制的想法

  • Check it out!

    快去一探究竟!

  • If the colander our protagonist puts on his head allows him to hack into the mind of his less intellectual friends,

    如果主角頭戴的濾器能讓他駭入較不聰明的朋友腦中

  • then in theory, he could exercise control over their actions at a basic level, it doesn't sound too complicated.

    那麼理論上,他可以對朋友進行的行為進行基本的控制,這聽起來不會很複雜

  • In order to control the activity in an area of the brain, you need to stimulate it with energy.

    為了使腦袋的一部份控制行為,你必須透過能量來刺激它

  • My name is Blocko, this has been Life Noggin, don't forget to keep on thinking

    我的名字是 Blocko,在 Life Noggin ,別忘了要不斷動腦喔!

Hey there!

哈囉!

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B1 中級 中文 美國腔 地球 地平線 天空 地方 實驗 證據

如何知道地球不是平的? (This Is How We Know Earth Isn't Flat)

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    Emily 發佈於 2018 年 09 月 05 日
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