Could we steal the power of a black hole? - Fabio Pacucci

467,961 views ใƒป 2020-10-19

TED-Ed


์•„๋ž˜ ์˜๋ฌธ์ž๋ง‰์„ ๋”๋ธ”ํด๋ฆญํ•˜์‹œ๋ฉด ์˜์ƒ์ด ์žฌ์ƒ๋ฉ๋‹ˆ๋‹ค.

๋ฒˆ์—ญ: Jiwon Lee ๊ฒ€ํ† : DK Kim
00:07
Imagine a distant future when humans reach beyond our pale blue dot,
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์ธ๋ฅ˜๊ฐ€ ์ž‘์€ ์ง€๊ตฌ๋ฅผ ๋ฒ—์–ด๋‚˜๋Š” ๋จผ ๋ฏธ๋ž˜๋ฅผ ์ƒ์ƒํ•ด๋ณด์„ธ์š”.
00:12
forge cities on planets thousands of light-years away,
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์ˆ˜์ฒœ ๊ด‘๋…„ ๋–จ์–ด์ง„ ํ–‰์„ฑ๋“ค์— ๋„์‹œ๋ฅผ ๊ฑด์„คํ•˜๊ณ 
๋ฌด์—ญ๊ณผ ์ˆ˜์†ก์ด ๊ฐ€๋Šฅํ•œ ์€ํ•˜๋ง์„ ๊ตฌ์ถ•ํ•˜๋Š” ๋ชจ์Šต์„์š”.
00:17
and maintain a galactic web of trade and transport.
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00:21
What would it take for our civilization to make that leap?
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์ธ๋ฅ˜ ๋ฌธ๋ช…์ด ์ด๊ฐ™์€ ํฐ ๋ฐœ์ „์„ ์ด๋ฃจ๊ธฐ ์œ„ํ•ด ๋ญ๊ฐ€ ํ•„์š”ํ• ๊นŒ์š”?
00:25
There are many things to considerโ€” how would we communicate?
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๋งŽ์€ ๋ถ€๋ถ„์„ ๊ณ ๋ คํ•ด์•ผ ํ•˜๋Š”๋ฐ, ์˜ˆ๋ฅผ ๋“ค์–ด, ์–ด๋–ป๊ฒŒ ์˜์‚ฌ์†Œํ†ต์„ ํ• ๊นŒ์š”?
00:28
What might a galactic government look like?
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์€ํ•˜ ์ •๋ถ€๋Š” ์–ด๋–ค ํ˜•ํƒœ์ผ๊นŒ์š”?
00:30
And one of the most fundamental of all:
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๊ฐ€์žฅ ๊ธฐ๋ณธ์ ์ธ ์งˆ๋ฌธ์€ ์ด๊ฒƒ์ž…๋‹ˆ๋‹ค.
00:33
where would we get enough energy to power that civilizationโ€”
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๊ทธ ๋ฌธ๋ช…์„ ์›€์ง์ด๊ธฐ์— ์ถฉ๋ถ„ํ•œ ๋™๋ ฅ์„ ์–ด๋””์„œ ์–ป์„ ์ˆ˜ ์žˆ์„๊นŒ์š”?
00:37
its industry, its terraforming operations, and its starships?
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์‚ฐ์—…์„ ๊ฑด์„คํ•˜๊ณ , ์ง€๊ตฌ์ฒ˜๋Ÿผ ๋งŒ๋“ค๊ณ , ์šฐ์ฃผ์„ ์„ ๋„์šฐ๊ธฐ ์œ„ํ•ด์„œ์š”.
00:43
An astronomer named Nikolai Kardashev proposed a scale
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์šฐ์ฃผ๋น„ํ–‰์‚ฌ ๋‹ˆ์ฝœ๋ผ์ด ์นด๋ฅด๋‹ค์…ฐํ”„๋Š”
๋ฌธ๋ช… ์ง„ํ™”์— ๋”ฐ๋ฅธ ์—๋„ˆ์ง€ ์ˆ˜์š” ์ฆ๊ฐ€๋ฅผ ์ˆซ์ž๋กœ ๋‚˜ํƒ€๋‚ผ ๋‹จ์œ„๋ฅผ ์ œ์•ˆํ–ˆ์Šต๋‹ˆ๋‹ค.
00:47
to quantify an evolving civilizationโ€™s increasing energy needs.
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00:52
In the first evolutionary stage, which weโ€™re currently in,
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ํ˜„์žฌ ์šฐ๋ฆฌ๊ฐ€ ์žˆ๋Š” ์ฒซ ๋ฒˆ์งธ ์ง„ํ™” ๋‹จ๊ณ„์—์„œ๋Š”
00:56
planet-based fuel sources like fossil fuels,
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ํ–‰์„ฑ ๋‚ด์—์„œ ์–ป์„ ์ˆ˜ ์žˆ๋Š” ํ™”์„ ์—ฐ๋ฃŒ ๊ฐ™์€ ์ž์›๊ณผ
00:59
solar panels and nuclear power plants
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ํƒœ์–‘์—ด ๋ฐœ์ „๊ณผ ์›์ž๋ ฅ ๋ฐœ์ „์œผ๋กœ
01:02
are probably enough to settle other planets inside our own solar system,
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ํƒœ์–‘๊ณ„ ๋‚ด๋ถ€์˜ ๋‹ค๋ฅธ ํ–‰์„ฑ์— ์ •์ฐฉํ•˜๊ธฐ์— ์ถฉ๋ถ„ํ•ฉ๋‹ˆ๋‹ค.
01:07
but not much beyond that.
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ํ•˜์ง€๋งŒ ๊ทธ ์ด์ƒ์€ ์–ด๋ ต์Šต๋‹ˆ๋‹ค.
01:09
For a civilization on the third and final stage,
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๋งˆ์ง€๋ง‰์ด์ž ์„ธ ๋ฒˆ์งธ ๋‹จ๊ณ„์—์„œ
01:13
expansion on a galactic scale would require about 100 billion times
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์€ํ•˜๊ณ„ ๊ทœ๋ชจ์˜ ํ™•์žฅ์„ ์œ„ํ•ด์„œ๋Š”
ํƒœ์–‘์ด ๋งค์ดˆ ๋ฐœ์‚ฐํ•˜๋Š” 385์š”ํƒ€ ์ค„๋ณด๋‹ค
01:18
more energy than the full 385 yotta joules our sun releases every second.
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1000์–ต ๋ฐฐ ์ด์ƒ ๋” ๋งŽ์€
์—๋„ˆ์ง€๊ฐ€ ํ•„์š”ํ•ฉ๋‹ˆ๋‹ค.
01:25
Barring a breakthrough in exotic physics,
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๋ฌผ๋ฆฌ ๋ฒ•์น™์„ ์–ด๊ธฐ๋Š” ๊ฒƒ์€ ์ œ์™ธํ•œ๋‹ค๋ฉด
01:28
thereโ€™s only one energy source that could suffice:
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๊ฐ๋‹นํ•  ์ˆ˜ ์žˆ๋Š” ์—๋„ˆ์ง€์›์€ ๋‹จ ํ•œ ๊ฐ€์ง€๋ฟ์ž…๋‹ˆ๋‹ค.
01:32
a supermassive black hole.
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์ดˆ๋Œ€ํ˜• ๋ธ”๋ž™ํ™€์ด์ฃ .
01:35
Itโ€™s counterintuitive to think of black holes as energy sources,
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๋ธ”๋ž™ํ™€์„ ์—๋„ˆ์ง€์›์œผ๋กœ ๋ณด๋Š” ๊ฒƒ์€ ์ƒ์‹์ ์ด์ง€ ์•Š์ง€๋งŒ,
01:39
but thatโ€™s exactly what they are, thanks to their accretion disks:
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๋ธ”๋ž™ํ™€์˜ ๊ฐ•์ฐฉ ์›๋ฐ˜ ๋•๋ถ„์— ํ™•์‹คํžˆ ๊ฐ€๋Šฅํ•ฉ๋‹ˆ๋‹ค.
01:44
circular, flat structures formed by matter falling into the event horizon.
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์ด๊ฒƒ์€ ์‚ฌ์ƒ์˜ ์ง€ํ‰์„ ์œผ๋กœ ๋–จ์–ด์ง€๋Š” ๋ฌผ์งˆ๋“ค์ด ๋งŒ๋“œ๋Š” ํšŒ์ „ ํ‰๋ฉด์ž…๋‹ˆ๋‹ค.
01:49
Because of conservation of angular momentum,
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๊ฐ์šด๋™๋Ÿ‰ ๋ณด์กด๋ฒ•์น™ ๋•Œ๋ฌธ์—,
01:52
particles there donโ€™t just plummet straight into the black hole.
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๊ฑฐ๊ธฐ์—์„œ ์ž…์ž๋“ค์€ ๋ธ”๋ž™ํ™€๋กœ ๊ทธ๋ƒฅ ๋–จ์–ด์ง€๋Š” ๊ฒƒ์ด ์•„๋‹ˆ๋ผ
01:56
Instead, they slowly spiral.
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์ฒœ์ฒœํžˆ ๋‚˜์„ ํ˜•์œผ๋กœ ๋Œ๊ฒŒ ๋ฉ๋‹ˆ๋‹ค.
02:00
Due to the intense gravitational field of the black hole,
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๋ธ”๋ž™ํ™€์˜ ๊ฐ•๋ ฅํ•œ ์ค‘๋ ฅ์žฅ ๋•Œ๋ฌธ์—,
02:03
these particles convert their potential energy to kinetic energy
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์ž…์ž๋“ค์€ ์œ„์น˜ ์—๋„ˆ์ง€๋ฅผ ์šด๋™ ์—๋„ˆ์ง€๋กœ ๋ฐ”๊พธ๋ฉด์„œ
02:07
as they inch closer to the event horizon.
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๋ธ”๋ž™ํ™€ ์ชฝ์œผ๋กœ ์กฐ๊ธˆ์”ฉ ๋‹ค๊ฐ€๊ฐ‘๋‹ˆ๋‹ค.
02:10
Particle interactions allow for this kinetic energy
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์ž…์ž ๊ฐ„์˜ ์ƒํ˜ธ์ž‘์šฉ์€ ์ด ์šด๋™ ์—๋„ˆ์ง€๋ฅผ
02:12
to be radiated out into space
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์šฐ์ฃผ๋กœ ๋ฐฉ์ถœํ•˜๊ฒŒ ๋งŒ๋“œ๋Š”๋ฐ
02:15
at an astonishing matter-to-energy efficiency:
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๋ฌผ์งˆ ์—๋„ˆ์ง€ ์ „ํ™˜ ๋น„์œจ์ด ๋†€๋ž์Šต๋‹ˆ๋‹ค.
02:18
6% for non-rotating black holes, and up to 32% for rotating ones.
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ํšŒ์ „ํ•˜์ง€ ์•Š๋Š” ๋ธ”๋ž™ํ™€์—์„œ๋Š” 6%์ด๊ณ 
ํšŒ์ „ํ•˜๋Š” ๋ธ”๋ž™ํ™€์—์„  32%์— ์ด๋ฆ…๋‹ˆ๋‹ค.
02:25
This drastically outshines nuclear fission,
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์ด๊ฒƒ์€ ํ•ต๋ถ„์—ด์„ ๊ฐ€๋ณ๊ฒŒ ์ œ์นฉ๋‹ˆ๋‹ค.
02:29
currently the most efficient widely available mechanism
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ํ•ต๋ถ„์—ด์€ ํ˜„์žฌ ๊ฐ€๋Šฅํ•œ ๋ฐฉ๋ฒ• ์ค‘์—์„œ๋Š” ๊ฐ€์žฅ ํšจ๊ณผ์ ์œผ๋กœ
02:32
to extract energy from mass.
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๋ฌผ์งˆ์—์„œ ์—๋„ˆ์ง€๋ฅผ ์ถ”์ถœํ•˜๋Š” ๋ฐฉ๋ฒ•์ž…๋‹ˆ๋‹ค.
02:35
Fission converts just 0.08% of a Uranium atom into energy.
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ํ•ต๋ถ„์—ด์€ ์šฐ๋ผ๋Š„ ์›์ž์˜ 0.08%๋ฅผ ์—๋„ˆ์ง€๋กœ ๋ฐ”๊ฟ‰๋‹ˆ๋‹ค.
02:42
The key to harnessing this power may lie in a structure
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์ด ๋™๋ ฅ์„ ์ด์šฉํ•  ํ•ด๊ฒฐ์ฑ…์€ ์ด ๊ตฌ์กฐ๋ฌผ์— ์žˆ์„ ์ˆ˜ ์žˆ์Šต๋‹ˆ๋‹ค.
02:46
devised by physicist Freeman Dyson, known as the Dyson sphere.
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๋ฌผ๋ฆฌํ•™์ž ํ”„๋ฆฌ๋จผ ๋‹ค์ด์Šจ์ด ๊ณ ์•ˆํ•œ ๋‹ค์ด์Šจ ๊ตฌ์ž…๋‹ˆ๋‹ค.
02:52
In the 1960s, Dyson proposed that an advanced planetary civilization
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1960๋…„๋Œ€์— ๋‹ค์ด์Šจ์€ ์ง„๋ณดํ•œ ํ–‰์„ฑ ๋ฌธ๋ช…์ด
02:56
could engineer an artificial sphere around their main star,
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๊ทธ๋“ค์˜ ํ•ญ์„ฑ ์ฃผ์œ„๋ฅผ ์ธ๊ณต์ ์ธ ๊ตฌ๋กœ ๋‘˜๋Ÿฌ์‹ธ์„œ
03:01
capturing all of its radiated energy to satisfy their needs.
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๋ชจ๋“  ๋ณต์‚ฌ ์—๋„ˆ์ง€๋ฅผ ๋ชจ์•„์„œ ์‚ฌ์šฉํ•  ๊ฒƒ์ด๋ผ๊ณ  ์ฃผ์žฅํ–ˆ์Šต๋‹ˆ๋‹ค.
03:06
A similar, though vastly more complicated design
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ํ›จ์”ฌ ๋” ๋ณต์žกํ•˜์ง€๋งŒ ๋น„์Šทํ•œ ์„ค๊ณ„๋ฅผ
03:09
could theoretically be applied to black holes.
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์ด๋ก ์ ์œผ๋กœ๋Š” ๋ธ”๋ž™ํ™€์—๋„ ์ ์šฉํ•  ์ˆ˜ ์žˆ์Šต๋‹ˆ๋‹ค.
03:12
In order to produce energy, black holes need to be continuously fedโ€”
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๋ธ”๋ž™ํ™€์ด ์—๋„ˆ์ง€๋ฅผ ์ƒ์‚ฐํ•˜๋ ค๋ฉด ์—ฐ๋ฃŒ๊ฐ€ ์ง€์†์ ์œผ๋กœ ํ•„์š”ํ•ฉ๋‹ˆ๋‹ค.
03:17
so we wouldnโ€™t want to fully cover it with a sphere.
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๊ทธ๋ž˜์„œ ๋ธ”๋ž™ํ™€์„ ๊ตฌ๋กœ ์ „๋ถ€ ๋ฎ์œผ๋ฉด ์•ˆ ๋ฉ๋‹ˆ๋‹ค.
03:20
Even if we did, the plasma jets that shoot from the poles
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๋งŒ์•ฝ ์ „๋ถ€ ๋ฎ์—ˆ๋‹ค ํ•ด๋„ ์ดˆ๋Œ€ํ˜• ๋ธ”๋ž™ํ™€์˜ ๊ทน์—์„œ ๋ฟœ์–ด์ ธ ๋‚˜์˜ค๋Š” ํ”Œ๋ผ์Šค๋งˆ ์ œํŠธ๊ฐ€
03:23
of many supermassive black holes
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03:26
would blow any structure in their way to smithereens.
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๊ทธ ์•ž์— ๋†“์ธ ์–ด๋Š ๊ตฌ์กฐ๋ผ๋„ ์‚ฐ์‚ฐ์กฐ๊ฐ๋‚ผ ๊ฒƒ์ž…๋‹ˆ๋‹ค.
03:30
So instead, we might design a sort of Dyson ring,
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๋Œ€์‹ ์— ๋‹ค์ด์Šจ ๊ณ ๋ฆฌ๋ฅผ ๋งŒ๋“ค ์ˆ˜ ์žˆ์Šต๋‹ˆ๋‹ค.
03:33
made of massive, remotely controlled collectors.
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๋ฌด์„  ์กฐ์ข…์œผ๋กœ ์—๋„ˆ์ง€๋ฅผ ๋ชจ์œผ๋Š” ๊ฑฐ๋Œ€ํ•œ ์žฅ์น˜์ž…๋‹ˆ๋‹ค.
03:37
Theyโ€™d swarm in an orbit around a black hole,
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๊ทธ๊ฒƒ๋“ค์€ ๋ธ”๋ž™ํ™€์˜ ์ฃผ์œ„์— ์œ„์น˜ํ•ฉ๋‹ˆ๋‹ค.
03:40
perhaps on the plane of its accretion disk, but farther out.
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๊ฐ•์ฐฉ ์›๋ฐ˜๊ณผ ๊ฐ™์€ ํ‰๋ฉด์ด์ง€๋งŒ ๋” ๋ฉ€๋ฆฌ ๋–จ์–ด์ง„ ๊ณณ์ด์ฃ .
์ด ์žฅ๋น„๋“ค์€ ๊ฑฐ์šธ ๊ฐ™์€ ํŒ์„ ์‚ฌ์šฉํ•˜์—ฌ
03:44
These devices could use mirror-like panels
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03:46
to transmit the collected energy to a powerplant,
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๋ชจ์€ ์—๋„ˆ์ง€๋ฅผ ๋ฐœ์ „์†Œ๋‚˜ ์ €์žฅ์šฉ ๋ฐฐํ„ฐ๋ฆฌ๋กœ ๋ณด๋ƒ…๋‹ˆ๋‹ค.
03:50
or a battery for storage.
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03:52
Weโ€™d need to ensure that these collectors are built at just the right radius:
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์ˆ˜ํ™• ์žฅ์น˜๋Š” ์ ์ ˆํ•œ ํฌ๊ธฐ๋กœ ๋งŒ๋“ค์–ด์•ผ ํ•ฉ๋‹ˆ๋‹ค.
03:57
too close and theyโ€™d melt from the radiated energy.
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๋„ˆ๋ฌด ๊ฐ€๊นŒ์šฐ๋ฉด ๋ณต์‚ฌ ์—๋„ˆ์ง€๋กœ ๋…น๊ณ 
04:00
Too far, and theyโ€™d only collect a tiny fraction of the available energy
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๋„ˆ๋ฌด ๋ฉ€๋ฉด ๊ฐ€๋Šฅํ•œ ์—๋„ˆ์ง€ ์ค‘ ์•„์ฃผ ์ž‘์€ ์–‘๋งŒ์„ ๋ชจ์„ ๊ฒƒ์ž…๋‹ˆ๋‹ค.
04:05
and might be disrupted by stars orbiting the black hole.
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๊ฒŒ๋‹ค๊ฐ€ ๋ธ”๋ž™ํ™€ ์ฃผ๋ณ€์„ ๋„๋Š” ๋ณ„๋“ค์˜ ๋ฐฉํ•ด๋ฅผ ๋ฐ›์„ ์ˆ˜ ์žˆ์Šต๋‹ˆ๋‹ค.
04:09
We would likely need several Earths worth of highly reflective material
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์ ์ฒ ์„ ๊ฐ™์€ ์„ฑ๋Šฅ ์ข‹์€ ๋ฐ˜์‚ฌ ์†Œ์žฌ๊ฐ€ ์ง€๊ตฌ์˜ ๋ช‡ ๋ฐฐ๋งŒํผ ์žˆ์–ด์•ผ
04:14
like hematite to construct the full systemโ€”
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์ „์ฒด ์‹œ์„ค์„ ๊ฑด์„คํ•  ์ˆ˜ ์žˆ์Šต๋‹ˆ๋‹ค.
04:17
plus a few more dismantled planets to make a legion of construction robots.
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๋˜ํ•œ ์ˆ˜๋งŽ์€ ๊ฑด์„ค ๋กœ๋ด‡์„ ๋งŒ๋“ค๋ ค๋ฉด ํ–‰์„ฑ ๋ช‡ ๊ฐœ๋ฅผ ๋” ํ—ˆ๋ฌผ์–ด์•ผ ํ•ฉ๋‹ˆ๋‹ค.
04:23
Once built, the Dyson ring would be a technological masterpiece,
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๊ฑด์„ค์ด ์™„์„ฑ๋˜๊ธฐ๋งŒ ํ•˜๋ฉด ๋‹ค์ด์Šจ ๊ณ ๋ฆฌ๋Š” ๊ธฐ์ˆ ์  ๊ฑธ์ž‘์œผ๋กœ์„œ
04:27
powering a civilization spread across every arm of a galaxy.
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์€ํ•˜ ๊ณณ๊ณณ์— ๋ป—์–ด๋‚˜๊ฐ„ ๋ฌธ๋ช…์— ์—๋„ˆ์ง€๋ฅผ ๊ณต๊ธ‰ํ•ด์ค„ ๊ฒƒ์ž…๋‹ˆ๋‹ค.
04:32
This all may seem like wild speculation.
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์ด ์–˜๊ธฐ๊ฐ€ ์ „ํ˜€ ํ„ฐ๋ฌด๋‹ˆ์—†๊ฒŒ ๋“ค๋ฆด ์ˆ˜ ์žˆ์Šต๋‹ˆ๋‹ค.
04:35
But even now, in our current energy crisis,
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ํ•˜์ง€๋งŒ ์‹ฌ์ง€์–ด ํ˜„์žฌ ์—๋„ˆ์ง€ ์œ„๊ธฐ ์ƒํ™ฉ์—์„œ๋„
04:38
weโ€™re confronted by the limited resources of our planet.
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์šฐ๋ฆฌ๋Š” ์ง€๊ตฌ์˜ ํ•œ์ •๋œ ์ž์›์— ๋ถ€๋”ชํ˜”์Šต๋‹ˆ๋‹ค.
04:41
New ways of sustainable energy production will always be needed,
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์ง€์†๊ฐ€๋Šฅํ•œ ์—๋„ˆ์ง€๋ฅผ ์ƒ์‚ฐํ•˜๋Š” ์ƒˆ๋กœ์šด ๋ฐฉ๋ฒ•์€ ํ•ญ์ƒ ํ•„์š”ํ•ฉ๋‹ˆ๋‹ค.
04:45
especially as humanity works towards the survival
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์ธ๋ฅ˜๊ฐ€ ์ƒ์กด๊ณผ ๊ธฐ์ˆ ์ ์ธ ์ง„๋ณด๋ฅผ ์œ„ํ•ด ๋…ธ๋ ฅํ•˜๋Š” ์ƒํ™ฉ์—์„œ๋Š” ๋”์šฑ ๊ทธ๋ ‡์Šต๋‹ˆ๋‹ค.
04:48
and technological progress of our species.
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์•„๋งˆ๋„ ์ € ๋ฉ€๋ฆฌ ์–ด๋–ค ๋ฌธ๋ช…์ด ์ด๋ฏธ
04:52
Perhaps thereโ€™s already a civilization out there
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04:54
that has conquered these astronomical giants.
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์ดˆ๋Œ€ํ˜• ๋ธ”๋ž™ํ™€์„ ์ •๋ณตํ–ˆ์„์ง€๋„ ๋ชจ๋ฆ…๋‹ˆ๋‹ค.
04:58
We may even be able to tell
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์•„๋งˆ๋„ ๋ธ”๋ž™ํ™€์˜ ๋น›์ด ์ฃผ๊ธฐ์ ์œผ๋กœ ์–ด๋‘์›Œ์ง€๋Š” ๊ฒƒ์„ ๋ณด๊ณ 
04:59
by seeing the light from their black hole periodically dim
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05:03
as pieces of the Dyson ring pass between us and them.
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๋‹ค์ด์Šจ ๊ณ ๋ฆฌ๊ฐ€ ์žˆ์Œ์„ ์•Œ๊ฒŒ ๋  ์ง€๋„ ๋ชจ๋ฆ…๋‹ˆ๋‹ค.
05:08
Or maybe these superstructures are fated to remain in the realm of theory.
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ํ˜น์€ ์ด๋Ÿฐ ๊ตฌ์กฐ๋ฌผ๋“ค์€ ์ด๋ก ์ ์œผ๋กœ๋งŒ ์กด์žฌํ•˜๋Š” ๊ฒƒ์ผ ์ˆ˜๋„ ์žˆ์Šต๋‹ˆ๋‹ค.
05:13
Only timeโ€” and our scientific ingenuityโ€” will tell.
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์‹œ๊ฐ„๊ณผ ์šฐ๋ฆฌ์˜ ๊ณผํ•™์  ๋Šฅ๋ ฅ๋งŒ์ด ๊ทธ ๋‹ต์„ ์•Œ๋ ค์ค„ ๊ฒƒ์ž…๋‹ˆ๋‹ค.
์ด ์›น์‚ฌ์ดํŠธ ์ •๋ณด

์ด ์‚ฌ์ดํŠธ๋Š” ์˜์–ด ํ•™์Šต์— ์œ ์šฉํ•œ YouTube ๋™์˜์ƒ์„ ์†Œ๊ฐœํ•ฉ๋‹ˆ๋‹ค. ์ „ ์„ธ๊ณ„ ์ตœ๊ณ ์˜ ์„ ์ƒ๋‹˜๋“ค์ด ๊ฐ€๋ฅด์น˜๋Š” ์˜์–ด ์ˆ˜์—…์„ ๋ณด๊ฒŒ ๋  ๊ฒƒ์ž…๋‹ˆ๋‹ค. ๊ฐ ๋™์˜์ƒ ํŽ˜์ด์ง€์— ํ‘œ์‹œ๋˜๋Š” ์˜์–ด ์ž๋ง‰์„ ๋”๋ธ” ํด๋ฆญํ•˜๋ฉด ๊ทธ๊ณณ์—์„œ ๋™์˜์ƒ์ด ์žฌ์ƒ๋ฉ๋‹ˆ๋‹ค. ๋น„๋””์˜ค ์žฌ์ƒ์— ๋งž์ถฐ ์ž๋ง‰์ด ์Šคํฌ๋กค๋ฉ๋‹ˆ๋‹ค. ์˜๊ฒฌ์ด๋‚˜ ์š”์ฒญ์ด ์žˆ๋Š” ๊ฒฝ์šฐ ์ด ๋ฌธ์˜ ์–‘์‹์„ ์‚ฌ์šฉํ•˜์—ฌ ๋ฌธ์˜ํ•˜์‹ญ์‹œ์˜ค.

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