
Korean: 
우리는 빛이
파동과 같은 성질을
가진다는 것과
일상에서 흔히 보이는 파동들은
매질을 따라 퍼져나가는
진동이라는 것을 배웠습니다
물 표면에 조약돌을
떨어뜨리면
물 또한 매질이기에
파동이 바깥으로
퍼져나간다는 것도 배웠습니다
음파가 공기의 진동이라는
것도 알아 보았습니다
이 줄을 매질 삼아 퍼져나가는
파동에 대해서도 
생각해 보았습니다
빛이 파동의 특징을 
지니고 있었기에
19세기 중반에는 
빛 역시 매질을 따라 전파되는
파동이라 여기는 게
당연한 생각이었습니다
빛을 전파시키는 매질이
직접적으로 관측되지는 않았지만
사람들은
이 매질을 '발광성 에테르'라 불렀습니다
합리적인 사고를 가진
몇몇 사람들은
에테르에 관해 추론하며
이 발광성 에테르를
관측할 수 있는지
그리고 그 존재를 입증할 수 
있는지 의문을 가졌습니다
곧 우리가 
발광성 에테르에 비해
상대적으로 빨리 이동하고
있다는 결론에 도달했지만요

Thai: 
เราได้พูดถึงเรื่องที่แสงมีสมบัติ
เหมือนคลื่นแล้ว และคลื่นที่เราคุ้นเคย
ในชีวิตประจำวัน เราถือว่ามันเป็น
การรบกวนที่เดินทางผ่านตัวกลาง
เราได้พูดถึงการโยนก้อนหินลงในน้ำ
และน้ำคือตัวกลาง
เราเห็นว่าคลื่นเดินทางออกไป
เราคิดถึงคลื่นเสียง ซึ่งเป็นการรบกวนในอากาศ
เราคิดถึงคลื่นที่เดินทางผ่านเชือกนี้
ตัวกลางตรงนี้คือเชือก
ในช่วงกลางคริตศตรวรรษที่ 19
คนยุคนั้นมีเหตุผลที่จะบอกว่า
ดูสิ แสงมีสมบัติเหมือนคลื่น
มันต้องเป็นการรบกวน
ที่เดินทางผ่านตัวกลางแน่นอน
แล้วเขาถามว่า เราจะเรียกตัวกลางนั้นว่าอะไร
ถึงแม้ว่าเราจะยังไม่พบมันโดยตรง?
ลองเรียกมันว่า ลูมินิเฟอรัส อีเธอร์ แล้วกัน
คำถามแน่นอนที่คนเหล่านี้
ผู้ตั้งสมมติฐานที่น่าเชื่อนี้ เขาถามว่า
เราจะตรวจจับลูมินิเฟอรัสอีเธอร์ได้อย่างไร?
เราทดสอบได้ไหมว่าลูมินิเฟอรัส อีเธอร์มีจริง?
และข้อคิดสำคัญคือว่า เราต้องเดินทาง
เร็วมากเทียบกับลูมินิเฟอรัส อีเธอร์

English: 
- [Voiceover] We've already
talked about light having
wave-like properties, and the
waves that we're familiar with
in our everyday life we consider to be
disturbances traveling through a medium.
We talked about dropping
a pebble in water,
and the water's a medium,
and we see the wave travel outwards.
We think about sound waves,
which is disturbance in the air.
We think about a wave
traveling through this rope,
the medium there is the rope.
So, in the mid-19th century it
was completely reasonable for
folks to say, "Well look,
light has wave-like properties;
it must be a disturbance
traveling through a medium."
And they said, "Well what
do we call that medium,
even though we don't observe it directly?
Well, let's call it the
luminiferous Ether."
So an obvious question
that was facing folks
who had this reasonable
assumption, they said
"Well, can we somehow detect
the luminiferous Ether?
Can we validate the
luminiferous Ether existing?"
And a key realization is,
is "Well, we must be moving
quite rapidly relative to
the luminiferous Ether."

Bulgarian: 
Вече говорихме, че светлината има
вълноподобни свойства
и вълните, с които сме запознати
в ежедневието си,
приемаме за периодична промяна,
движеща се в някаква среда.
Говорихме за пускане
на камъче във водата а
а водата е средата,
в която виждаме вълната
да се движи навън.
Споменахме звуковите вълни,
които са периодична промяна във въздуха.
Разгледахме една вълна,
която се движи по това въже,
средата тук
е въжето.
В средата на 19-ти век е било 
напълно логично хората да кажат:
"Светлината има
вълноподобни свойства,
тя трябва да е периодична промяна,
движеща се в някаква среда."
И са казали: "Как наричаме
тази среда,
въпреки че не я
наблюдаваме директно?
Ами, нека я наречем
светоносен етер."
Един очевиден въпрос,
пред който били изправени хората,
които правели това
логично предположение,
бил: "Как можем да засечем
светоносния етер?
Можем ли да докажем
съществуването на светоносния етер?"
И едно ключово осъзнаване е:
"Трябва да се движим доста бързо
спрямо светоносния етер."

Bulgarian: 
Как знаем това?
Трябва да си припомним, че, очевидно,
Земята се върти,
но не само се върти
около собствената си ос,
а се върти и
около Слънцето.
Ако това тук е Слънцето,
това е Земята.
Земята се върти – и всички тези 
числа са приблизителни –
Земята се движи около Слънцето
с приблизително 30 километра в секунда.
30 километра в секунда.
Според стандартите от ежедневието ни
това е доста бързо.
Но още не сме готови.
Понеже Слънцето също се движи
и около центъра на галактиката.
Това не е реална снимка
на Млечния път,
очевидно не сме стигали толкова 
надалеч от галактиката си,
за да имаме такава
удобна позиция да я снимаме,
но ако Слънцето беше ето тук,
приблизителното изчисление е, че Слънцето
се движи със скорост от приблизително 200 –
нека запиша това с по-добър цвят,
за да можеш да го видиш –

Korean: 
어떻게 그걸 알았을까요?
지구가 돌고 있다는 것을,
스스로의 자전축에서
자전할 뿐만 아니라
태양 주위를 공전한다는
사실을 기억해 보십시오
이 점이 태양이라면
이 점은 지구입니다
그림 비율이 맞지는 않지만
지구는 태양 주위를 돌고 있습니다
초속 30킬로미터로요!
일상적인 기준에서 보았을 때
꽤 빠른 속도지만
아직 끝나지 않았습니다
태양 또한 은하 중심을 향해
이동하고 있기 때문이죠
이 그림은 진짜
우리 은하의 모습이 아닙니다
우리는 이 시점에서
우리 은하를 관찰하기에는
충분히 멀리 나와 있지
않기 때문이죠
하지만 태양이 바로
여기 있다면
약 초속 200킬로미터에
달하는 속도로
다른 색으로 다시 강조하지만

English: 
How do we know that?
Well, we just have to remind
ourselves that, obviously
the Earth is rotating, but
not only is it rotating
on its own axis, but it's
rotating around the sun.
So if this is the sun right
over here, this is the Earth.
The Earth is rotating, and
these are all rough figures,
the Earth is moving around
the Sun at approximately
30 kilometers per second.
30 kilometers per second!
By our everyday standards,
that's quite fast,
but we're not done yet.
'Cuz the Sun is also moving
around the center of the galaxy.
And this isn't an actual
picture of the Milky Way;
obviously we haven't gotten
this far from our own galaxy
to actually get this
type of a vantage point,
but if the Sun were right
over there, the Sun,
estimates are, are moving with
a speed of 200, roughly, 200,
let me write that in a better color so

Thai: 
เรารู้ได้อย่างไร?
เราต้องทบทวนว่า
โลกกำลังหมุน แต่มันไม่ได้หมุน
รอบแกนของตัวเองอย่างเดียว 
มันยังโคจรรอบดวงอาทิตย์
ถ้านี่คือดวงอาทิตย์ นี่คือโลก
โลกกำลังหมุน และพวกนี้เป็นภาพโดยประมาณ
โลกกำลังเคลื่อนที่รอบดวงอาทิตย์ประมาณ
30 กิโลเมตรต่อวินาที 30 กิโลเมตรต่อวินาที!
ในชีวิตประจำวัน มันเร็วทีเดียว
แต่เรายังไม่เสร็จ
เพราะดวงอาทิตย์ยังเดินทาง
รอบศูนย์กลางกาแล็กซี่
และอันนี้ไม่ใช่ภาพของทางช้างเผือกจริงๆ
แน่นอนว่าเรายังไม่เคย
ไปไกลจากกาแล็กซี่ของเรา
จนอยู่ในมุมมองแบบนี้ได้
แต่ถ้าดวงอาทิตย์อยู่ตรงนี้ ดวงอาทิตย์
ประมาณว่า เดินทางด้วยอัตราเร็ว 200 
ประมาณ 200
ขอผมเขียนด้วยสีที่ดีกว่านี้

Thai: 
คุณจะได้เห็นชัด 200 กิโลเมตรต่อวินาที
200 กิโลเมตรต่อวินาที
รอบศูนย์กลางของทางช้างเผือก
แล้วทางช้างเผือกเองก็กำลังเคลื่อนที
เราไม่รู้ว่าทิศทางของเรา
เทียบกับอีเธอร์เป็นอย่างไร แต่เรา
เราจะเปลี่ยนการวางตัวไปเรื่อยๆ
เราเคลื่อนที่ไปตามรูปแบบของวงโคจรเหล่านี้
ถ้ามันมีลูมินิเฟอรัสอีเธอร์อยู่
ถ้ามันมีลูมินิเฟอรัสอีเธอร์อยู่
ผมจะวาดเส้นเหล่านี้ตรงนี้
เพื่อแสดงลูมินิเฟอรัสอีเธอร์
เราต้องเคลื่อนสัมพัทธ์กับมัน
ถ้าเราวางตัวแบบนั้น
ที่จริง โอกาสที่เราจะอยู่กับที่เทียบกับ
อีเธอร์นั้นน้อยจนใกล้ศูนย์
ยิ่งถ้าเรารอสักครู่
ถ้าเราอยู่กับที่เทียบกับอีเธอร์ตอนนี้
สมมุติว่าที่จุดนี้ เนื่องจากเรากำลังเปลี่ยนทิศ
เราจะไม่อยู่กับที่เทียบกับ
อีเธอร์ ณ จุดนั้น
และนั่นคือตอนที่คุณคิด
วงโคจรของโลกรอบดวงอาทิตย์
มันเป็นจริงยิ่งกว่าเดิม ถ้าคุณคิดถึง

Bulgarian: 
200 километра в секунда.
200 километра в секунда
около центъра
на Млечния път.
И самият Млечен път
може би се движи.
Не знаем реалната си
ориентация
спрямо етера,
но постоянно променяме
ориентацията,
движим се по тези орбити.
Ако има някакъв вид
светоносен етер –
и просто ще начертая
тези линии тук,
за да покажа нашия
светоносен етер,
трябва да се движим
спрямо него,
ако се ориентираме
по точния начин.
Всъщност шансовете да сме
неподвижни спрямо етера
са доста близки до 0,
особено ако изчакаме малко.
Ако сме неподвижни
спрямо етера точно сега,
да кажем, в тази точка,
тъй като променяме посоката си,
няма да сме неподвижни
спрямо етера
в тази точка.
И това е само
когато вземеш предвид
орбитата на Земята
около Слънцето.
Това е още по-вярно,
когато помислиш

English: 
you can actually see it,
200 kilometers per second.
200 kilometers per second
around the center of the Milky Way,
and then the Milky Way
itself could be moving.
So we don't know our actual,
kind of, our orientation
relative to the Ether, but we are,
we're constantly changing our orientation,
we're moving in these orbital patterns.
If there is some type
of luminiferous Ether,
if there is some type
of luminiferous Ether,
and I'm just gonna draw
these lines over here
to kind of show our luminiferous Ether,
we must be moving relative to it
if we orient ourselves just the right way.
In fact, the odds of us
being stationary relative to
the Ether are pretty close to zero,
especially if we wait a little.
If we're stationary relative
to the Ether right now,
let's say at this point, since
we're changing our direction,
we're not going to be
stationary relative to
the Ether at that point.
And that's just when you consider
the Earth's orbit around the Sun.
It's even more true
when you think about the

Korean: 
초속 200킬로미터로
움직이고 있을 겁니다
초속 200킬로미터로
우리 은하 중심을
공전하는 것입니다
그리고 우리 은하 또한
움직이고 있을지도 모릅니다
에테르에 비해 우리가
어떤 방향으로
움직이고 있는지는
알 수 없어도
이 궤도를 따라 돌며 끊임없이
방향을 바꾸고 있다는 건
알 수 있습니다
만약 발광성 에테르라는 것이
실제로 존재한다
가정해 봅시다
이 선들을 그려
발광성 에테르를
나타내볼 것입니다
자리만 잘 잡는다면 우리는
이 에테르와 상대적으로
이동하고 있게 됩니다
사실 지구가 에테르에
상대적인 정지 상태에
있을 확률은 
0에 가깝습니다
특히 조금
기다려본다면 말입니다
만약 이 위치에서 지구가
에테르에
상대적 정지 상태에
있다 해도
지구의 운동 방향은 계속해서 
바뀌기 때문에 이 점에서는
더 이상 상대 정지 상태에
있지 않게 됩니다
태양을 공전하는
지구의 궤도를
생각해 보면 알 수 있습니다
우리 은하 중심을
공전하는

Thai: 
ระบบสุริยะโคจรรอบศูนย์กลางของกาแล็กซี่
หรือแม้แต่การเคลื่อนที่ของกาแล็กซี่
เราควรเคลื่อนที่สัมพัทธ์กับอีเธอร์
หรืออีเธอร์ควรเคลื่อนที่สัมพัทธ์กับเรา
เราจึงควรตรวจจับ
สิ่งที่เรียกว่า ลมอีเธอร์
เพราะมันควรเคลื่อนที่สัมพัทธ์ --
ลมอีเธอร์
แล้วคุณจะตรวจจับลบอีเธอร์ได้อย่างไร?
ลองคิดถึงตัวกลางแบบอื่น
ที่เคลื่อนที่สัมพัทธ์กับเรา
สมมุติว่าเรากำลังนั่งอยู่บนเกาะ
ขอผมใช้สีดีๆ สำหรับเกาะหน่อย
สมมุติว่าเราอยู่บนเกาะที่
อยู่ตรงกลางสายน้ำ
พวกนี้คือฝั่งน้ำ
พวกนี้คือฝั่งริมน้ำ
และมันมีกระแสน้ำอยู่
น้ำกำลังเคลื่อนที่ในทิศนั้น
นั่นคือตัวกลาง
ทีนี้ ลองเริ่มด้วยคลื่นที่แผ่ผ่านน้ำนี้

English: 
solar system's orbit around
the center of the galaxy,
or even the movement of the galaxy.
So, we should be moving
relative to the Ether,
or the Ether should be
moving relative to us.
So we should be able
to detect some type of,
some type of what's
called an "Ether wind".
'Cuz it should be moving relative...
Ether wind.
Now how would you detect an Ether wind?
Well, let's think about
some other type of medium
moving relative to us.
Let's say that we are
sitting on an island,
let me do this in a better
color for an island.
So let's say that we're
on an island that's in
the middle of a stream.
So these are the shores of the stream.
These are the shores of the stream.
And there is some type of a current.
So the water is moving in that direction.
So that's the medium.
And now let's start a wave
propagating through this.

Bulgarian: 
за орбитата на Слънчевата система
около центъра на галактиката
или дори за движението
на галактиката.
Тоест трябва да се движим
спрямо етера
или етера трябва да се движи
спрямо нас.
Трябва да можем
да засечем това нещо,
което се нарича
"етерен вятър".
Понеже трябва да се движи
спрямо...
Етерен вятър.
Как ще засечем
етерния вятър?
Нека помислим за
някакъв друг вид среда,
която се движи
спрямо нас.
Да кажем, че стоим
на един остров –
нека направя това в цвят,
по-подходящ за един остров.
Да кажем, че сме
на един остров,
който е в средата
на един поток.
Това са бреговете
на потока.
Това са бреговете
на потока.
И има някакъв вид течение.
Водата се движи
в тази посока.
Това е средата.
Нека започнем една вълна,
разпространяваща се през това.

Korean: 
태양계의 궤도나
우리 은하의
이동에 대해 생각해 본다면
더 확실히 알 수 있죠
지구가 에테르에
상대적으로 이동하고 있거나
에테르가 지구에 상대적으로
이동하고 있는 셈이죠
이 가정이 맞다면
우리는
'에테르 바람'을
관측할 수 있을 겁니다
상대적으로 움직이는
에테르 바람 말이죠
어떻게 에테르 바람을
탐지할 수 있을까요?
우리를 향해
상대적으로 이동하고 있는
또 다른 매질을
찾아봅시다
우리가 어떤 섬에
앉아 있다 가정해 봅시다
섬에 더 적합한 색을
찾아봐야겠네요
우리가 어떤 섬에 있고
그 섬은
강 한가운데
있다고 합시다
이 선들은 강기슭입니다
이 선들은 강기슭입니다
강의 물살을 따라
물은 이 방향으로
움직이게 됩니다
이것이 매질인
셈입니다
이 매질을 통해 퍼지는
파도를 만들어 봅시다

Thai: 
ถ้าเราปล่อยก้อนกรวด
ตรงนี้ จะเกิดอะไรขึ้น?
คลื่นทางซ้ายจะแผ่เร็วกว่า
เทียบกับทางขวา
อันนี้มาจากประสบการณ์ในชีวิตประจำวัน
และนั่นเป็นเพราะทางซ้าย มันเคลื่อนที่
ตัวกลางเคลื่อนที่ไปทางซ้ายด้วย
เมื่อตัวกลางเคลื่อนที่
แล้วคุณแผ่ผ่านตัวกลางนั้น
คุณจะได้เคลื่อนที่เร็วทางซ้ายมากกว่าทางขวา
คลื่นจะแผ่ จะแผ่
คลื่นจะแผ่
หลังจากช่วงเวลาสั้นๆ
ยอดคลื่นทางขวาอาจอยู่ตรงนี้
แต่ยอดคลื่นทางซ้ายอาจอยู่ตรงนี้
มันอาจเป็นแบบนี้
แล้วหลังจากเวลาอีกช่วงหนึ่ง
มันอาจเป็น มันจะเป็นแบบนี้
ประเด็นทั่วไปคือว่า จากตัวอย่างกระแสน้ำนี้
คุณจะเห็นคลื่นแผ่เร็วกว่า
ในทิศที่ตัวกลางกำลังเคลื่อนที่
เช่นเดียกวัน ถ้าคุณมีลมอีเธอร์
ถ้าคุณมีลมอีเธอร์ และลูมินิเฟอรัสอีเธอร์นี้

Korean: 
조약돌을 하나 가져와
이 곳에 떨어뜨린다면
무슨 일이 일어날까요?
오른쪽보다 왼쪽으로
더 잘 퍼져나가는 
파도가 만들어집니다
일상에서 체득한
경험에 의하면
파도뿐만 아니라
매질인 물결 또한
왼쪽으로 움직이고
있기 때문입니다
움직이는 매질을 따라
퍼져나가는 파동은
오른쪽보다 왼쪽으로 더
빨리 움직이게 됩니다
이 파도가 계속적으로
퍼져나간다 칩시다
시간이 지나면
파도의 오른쪽 마루는
여기 있지만
왼쪽 마루는 저기 
있게 될 수도 있습니다
이 그림 비슷한
모양이 되겠죠
시간이 좀 더 흐르면
이렇게 보일 겁니다
이 시냇물 예제에서
얻을 수 있는 결론은
파동은 매질이
이동하는 방향으로
더 빨리 퍼져나가게
된다는 것입니다
에테르 바람의
경우에도 비슷합니다
에테르 바람이 있다면
빛이 전달되는

English: 
So if I were to just
take a pebble and drop it
right over here, what would happen?
Well the wave is going to
propagate faster to the left
than it is to the right.
This is from our everyday experience,
and that's because to
the left it's moving,
the medium is also moving to the left.
So as the medium moves,
and then you propagate
through that medium,
you're going to move faster
to the left than to the right.
So the wave is going to
propagate, is going to propagate,
something is going to propagate,
so after a small period of time,
the crest on the right might be there,
but the crest on the left might be there.
So it might look something like this.
And then after another period of time,
it might look something, it'll
look something like this.
So the general point is, for
this little stream example,
you're going to see your
wave propagate faster
in the direction of which
the medium is moving.
So similarly, if you have an Ether wind,
if you have Ether wind and
this luminiferous Ether

Bulgarian: 
Ако просто взема
едно камъче и го пусна тук,
какво ще се случи?
Вълната ще се разпространи
по-бързо наляво,
отколкото надясно.
Това е от опита
ни в ежедневието.
И това е, понеже вълната
се движи наляво,
а средата също
се движи наляво.
Докато средата се движи –
и после се разпространява
в тази среда –
ще се движи по-бързо наляво,
отколкото надясно.
Вълната ще се разпространи,
нещо ще се разпространи.
След кратък период от време
гребенът вдясно
може да е тук,
но гребенът вляво
може да е тук.
Това може да изглежда
ето така.
А след друг период
от време
може да изглежда
ето така.
Общата идея е –
за нашия пример с потока –
че ще видиш вълната
да се разпространява по-бързо
в посоката, в която
се движи средата.
Подобно, ако имаш
етерен вятър

English: 
is the medium by which
the light propagates,
the light is a disturbance in this medium,
then if this Ether wind has some,
let's say it has some speed,
let's just call it "S".
If you were try to propagate
light in that direction
versus in this direction,
versus in that direction,
it should go faster, we
should notice it going faster
if it's going along the
same direction as the Ether.
'Cuz it's propagating through something
that's also moving relative to us.
And likewise, if it's going
in the opposite direction
of the Ether, even though
it's propagating through
the actual Ether at that same speed,
the Ether is moving in the
other direction, so the light,
based on our 19th century
understanding of the universe,
the light should seem slower.
So you can imagine, people
started to theorize,
"Well, maybe we can measure
light in different directions
and see if, relative to
us, if relative to us,

Thai: 
คือตัวกลางที่แสงแผ่ไป
แสงคือการรบกวนในตัวกลางนี้
แล้วถ้าลมอีเธอร์นี้มี
สมมุติว่ามันมีอัตราเร็ว
ลองเรียกมันว่า s
ถ้าคุณพยายามแผ่แสงในทิศนั้น
เทียบกับทิศนี้ เทียบกับทิศนั้น
มันควรเร็วขึ้น เราควรพบว่ามันเร็วขึ้น
ถ้ามันไปตามทิศเดียวกับอีเธอร์
เพราะมันกำลังแผ่ผ่านสิ่ง
ที่เคลื่อนที่ไปด้วยเทียบกับเรา
เช่นเดียวกัน ถ้ามันไปในทิศตรงข้าม
กับอีเธอร์ ถึงแม้มันจะแผ่ผ่าน
อีเธอร์ด้วยอัตราเร็วเดียวกัน
อีเธอร์จะเคลื่อนที่อีกทาง แสง
ตามความเข้าใจเอกภพในคริสตวรรษที่ 19
แสงควรช้าลง
คุณคงนึกภาพได้ คนเริ่มตั้งทฤษฎีว่า
อืม เราวัดอัตราเร็วแสงในทิศต่างๆ
แล้วดูว่าถ้าเทียบกับเรา ถ้าเทียบกับเรา

Korean: 
매질은 바로
발광성 에테르일 것입니다
빛은 이 매질을 따라
퍼져나가는 진동인 셈입니다
이 에테르 바람이
속도를 가지고 있다
해 봅시다
에테르 바람의 속도를
S라 불러 봅시다
빛이 이 방향으로
전파된다 가정하면
반대 방향으로
전파되는 것보다
더 빠른 속도로 
이동하게 될 것입니다
에테르와 같은 방향으로
이동하고 있으며
지구에 상대적으로 
이동하는 매질을 타고
전파되고 있기
때문이죠
비슷한 방법으로
빛이 에테르의 이동 방향과
반대로 이동한다면
같은 속도로 에테르를 타고
전파되고 있음에도
불구하고
에테르는 빛과 반대 방향으로 
이동하고 있으므로
19세기 과학자들의
시각에 따르면
빛은 더 느리게
가는 것처럼 보일 겁니다
사람들은 이론을
세우기 시작했습니다
다른 방향에서
빛을 관측해 보면
지구의 운동 방향에 따라

Bulgarian: 
и този светоносен етер
е средата,
през която светлината
се разпространява,
светлината е периодична промяна
в тази среда,
тогава, ако етерният вятър
има някаква скорост,
да я наречем просто s...
Ако опитаме да разпространим
светлина в тази посока
и в тази посока,
трябва да забележим,
че се движи по-бързо,
ако се движи в същата посока
като етера.
Понеже се разпространява
през нещо,
което също се движи
спрямо нас.
И, подобно, ако се движи в
противоположна на етера посока,
въпреки че се разпространява
през този етер със същата скорост,
етерът се движи
в обратната посока,
тоест светлината, според разбирането ни
за Вселената от 19-ти век,
светлината трябва
да изглежда по-бавна.
Можеш да си представиш,
че хората започнали да теоретизират:
"Може би можем да измерим
светлината в различни посоки
и да видим дали спрямо нас

Bulgarian: 
виждаме различна скорост
за светлината."
Проблемът през
средата на 19-ти век бил,
че светлината
е невероятно бърза.
Знаем, че скоростта на светлината
 е приблизително
300 хиляди километра
в секунда.
И в средата на 19-ти век
нямало добри инструменти,
за да измерим това
с добра точност.
Особено поради
самия етерен вятър,
дори ако кажеш:
"Това е 30 километра в секунда,
може би се движим
около галактиката с
200 километра в секунда,
може би 300 километра в секунда",
това пак е малка част
от реалната скорост на светлината.
Ако не постигаш добра точност,
когато измерваш
скоростта на светлината
в тези различни посоки,
а етерният вятър е толкова бавен
в сравнение със скоростта на светлината,
само с традиционните инструменти
в 19-ти век
няма да успееш да засечеш
този етерен вятър,
ако съществува.

Korean: 
빛이 전파되는 속도도
다르리라는 가설이었습니다
문제가 하나 있었는데
19세기 중반에 빛은
매우 빨랐다는
것이었습니다
지금 우리는 빛의 속도가
초속 약 30만 킬로미터라는
것을 압니다
하지만 19세기 중반에는
이것을 정확히
관측할 만한
좋은 도구가 없었습니다
에테르 바람의 속도가
초속 30킬로미터로
관측된다 하여도
실제로 우리는 은하 중심을
초속 200킬로미터
혹은 초속 300킬로미터로 공전하고 
있을 수도 있기 때문이었죠
실제 빛의 속도에 비하면
매우 느린 편입니다
그렇기에 각기 다른 곳에서
빛의 속도를 측정하는 것은
별로 정확성이 없었습니다
빛의 속도에 비해 
에테르 바람은
너무 느렸기에 
19세기의 도구들을 사용해서는
관측해낼 수 없었습니다
물론 에테르 바람이란 것이
실제로 존재한다면 말입니다
이것을 바탕으로
진행된 것이

Thai: 
เราจะเห็นความเร็วแสงต่างกัน
ทีนี้ ปัญหาคือว่า ช่วงกลางคริสตวรรษที่ 19
แสงมันเร็วอย่างไม่น่าเชื่อ
ตอนนี้เรารู้ว่าอัตราเร็วแสงมีค่าประมาณ
3 แสนกิโลเมตรต่อวินาที
และในช่วงกลางคริสตรวรรษที่ 19 
เราไม่มีเครื่องมือดีๆ
เพื่อวัดด้วยความละเอียดสูง
โดยเฉพาะเนื่องจากลมอีเธอร์เอง
ถึงแม้คุณจะบอกว่า 
มันเร็ว 30 กิโลเมตรต่อวินาที
บางทีเรากำลังเคลือนที่รอบกาแล็กซี่ คุณก็รู้
200 กิโลเมตรต่อวินาที อาจเป็น
300 กิโลเมตรต่อวินาที
มันยังเป็นเศษส่วนเล็กน้อย 
ของอัตราเร็วแสงจริง
ถ้าคุณวัดไม่ละเอียดพอ เวลาวัด
อัตราเร็วแสงในทิศต่างๆ
ลมอีเธอร์นั้นช้ามากเทียบกับอัตราเร็วแสง
ด้วยเครื่องมือธรรมดาในคริสตวรรษที่ 19
คุณจะไม่สามารถตรวจพบ
ลบอีเธอร์ได้ ถ้ามันมีจริง
และนั่นคือสิ่งที่ทำให้เรามาถึง

English: 
we see a different velocity for light."
Now the problem was, is that
in the mid-19th century,
light is incredibly fast.
We now know that the speed
of light is approximately
300 thousand kilometers per second.
And in the mid-19th century,
we didn't have good tools
to measure this with a lot of accuracy.
Especially because the Ether wind itself,
even if you say "This is
30 kilometers per second,
maybe we're moving around
the galaxy at, you know,
200 kilometers per second, maybe
300 kilometers per second",
that's still a small fraction
of the actual speed of light.
So if you don't have a lot of
accuracy when you're measuring
the speed of light in these
different directions, and
the Ether wind is so slow
relative to the speed of light,
well, with just traditional
tools in the 19th century,
you're not going to be able to detect
this actual Ether wind, if it existed.
And that's what gets us to the famous

Bulgarian: 
Това ни води до известния експеримент
 на Майкелсън и Морли,
понеже те не са се опитали
директно да измерят
скоростта на светлината
в едната или другата посока,
а вместо това помислили:
"Нека разделим светлината
на две различни посоки,
а после отново да ги съберем
и да видим моделите
на интерференция.
И ако различните посоки
са се движили с различна скорост,
тогава ще имаме различни
интерференчни картини."
И ще видим това
в следващото видео.

Korean: 
마이컬슨과 몰리의 실험입니다
그들은 어떤 방향에서의
빛의 속도를
직접 관측하려 하지는
않았습니다
대신 마이컬슨과 몰리는
빛을 두 방향으로
나누어 관측하고
결과를 합산해
빛의 간섭 패턴을
비교 분석해 보기로 하였습니다
서로 다른 방향으로 전파되는
빛의 속도가 다르다면
그 간섭 패턴 역시
다를 것입니다
다음 영상에서 더 자세히
알아보도록 합시다

English: 
Michelson-Morley Experiment,
because there they didn't
just directly try to measure
the speed of light in
one direction or another,
instead they thought about,
"Let's split some light into
two different directions,
and then recombine them
and see the interference patterns.
And if the different directions
traveled at different speeds
then we'll have different
interference patterns."
And we're going to see
that in the next video.

Thai: 
การทดลองชื่อดังของไมเคิลสัน-มอร์เลย์
เพราะพวกเขาไม่ได้ตั้งใจวัด
อัตราเร็วแสงในทิศหนึ่งทิศใด
พวกเขาแค่คิดว่า ลองแยกแสง
เป็นสองทิศแล้ว แล้วกลับมารวม
แล้วดูรูปแบบการแทรกสอดดู
ถ้าแต่ละทิศเดินทางด้วยอัตราเร็วต่างกัน
เราจะได้รูปแบบการแทรกสอดขึ้นมา
และเราจะเห็นมันในวิดีโอหน้า
