What is the rarest color in nature? - Victoria Hwang

1,182,783 views ใƒป 2022-06-09

TED-Ed


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

๋ฒˆ์—ญ: Neo Y ๊ฒ€ํ† : DK Kim
00:07
Every color you see in front of you can be found in nature.
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๋ˆˆ์•ž์— ๋ณด์ด๋Š” ๋ชจ๋“  ์ƒ‰๋“ค์€ ์ž์—ฐ์—์„œ ์ฐพ์•„๋ณผ ์ˆ˜ ์žˆ๋Š” ์ƒ‰์ž…๋‹ˆ๋‹ค.
00:11
Some plant, animal, or mineral bears almost every hue imaginable.
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๋ช‡๋ช‡ ์‹๋ฌผ, ๋™๋ฌผ ํ˜น์€ ๊ด‘๋ฌผ๋“ค์€ ์ƒ์ƒํ•  ์ˆ˜ ์žˆ๋Š” ๊ฑฐ์˜ ๋ชจ๋“  ์ƒ‰์„ ๋ ์ฃ .
00:15
But which of these colors are you least likely to see in the natural world?
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๊ทธ๋Ÿฐ๋ฐ ์ด ์ƒ‰๊น”๋“ค ์ค‘ ์ž์—ฐ๊ณ„์—์„œ ๊ฐ€์žฅ ๋ณด๊ธฐ ํž˜๋“  ์ƒ‰์€ ๋ฌด์—‡์ผ๊นŒ์š”?
00:20
There are two factors that drive the rarity of color in nature:
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์ž์—ฐ์—์„œ ์ƒ‰์˜ ํฌ์†Œ์„ฑ์„ ๊ฒฐ์ •ํ•˜๋Š” ์š”์†Œ๋Š” ๋‘ ๊ฐ€์ง€์ž…๋‹ˆ๋‹ค.
00:24
physics and evolution.
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๋ฌผ๋ฆฌํ•™๊ณผ ์ง„ํ™”์ฃ .
00:27
Letโ€™s start with physics.
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๋ฌผ๋ฆฌํ•™๋ถ€ํ„ฐ ์‹œ์ž‘ํ•ด ๋ด…์‹œ๋‹ค.
00:29
Colors are generated when wavelengths of light interact with objects,
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์ƒ‰์€ ๋น›์˜ ํŒŒ์žฅ์ด ๋ฌผ์ฒด์™€ ์ƒํ˜ธ ์ž‘์šฉํ•  ๋•Œ ์ƒ์„ฑ๋˜๊ณ ,
00:33
and most of the colors youโ€™ve seen outside a screen
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ํ™”๋ฉด ๋ฐ–์—์„œ ๋ดค์„ ๋Œ€๋ถ€๋ถ„์˜ ์ƒ‰๋“ค์€
00:36
were produced in one of two ways.
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๋‘˜ ์ค‘ ํ•œ ๋ฐฉ์‹์œผ๋กœ ๋งŒ๋“ค์–ด์กŒ์Šต๋‹ˆ๋‹ค.
00:38
In absorption-based colors,
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ํก์ˆ˜๋ฅผ ํ† ๋Œ€๋กœ ํ•˜๋Š” ์ƒ‰๋“ค์€
00:40
certain wavelengths are absorbed by an object, while others are not.
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ํŠน์ • ํŒŒ์žฅ์ด ๋ฌผ์ฒด์— ํก์ˆ˜๋˜๋Š” ๋ฐ˜๋ฉด ๋‹ค๋ฅธ ํŒŒ์žฅ์€ ํก์ˆ˜๋˜์ง€ ์•Š์Šต๋‹ˆ๋‹ค.
00:44
The result is a matte final color generated by these leftover light waves.
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๊ฒฐ๊ณผ๋Š” ํก์ˆ˜๋˜์ง€ ์•Š์€ ๋น›์˜ ํŒŒ๋™๋“ค์ด ๋งŒ๋“ค์–ด๋‚ธ ๋ฌด๊ด‘ ์ƒ‰์ƒ์ž…๋‹ˆ๋‹ค.
00:49
Most naturally occurring colors fall into this category,
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์ž์—ฐ์ ์œผ๋กœ ๋งŒ๋“ค์–ด์ง„ ์ƒ‰์€ ๋Œ€๋ถ€๋ถ„ ์ด ๋ฒ”์ฃผ์— ๋“ค์–ด๊ฐ‘๋‹ˆ๋‹ค.
00:52
including those of many fruits and flowers.
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๋งŽ์€ ๊ณผ์ผ๊ณผ ๊ฝƒ๋“ค์ฒ˜๋Ÿผ ๋ง์ด์ฃ .
00:55
Plants are full of compounds called pigments that absorb light waves
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์‹๋ฌผ๋“ค์€ โ€˜์ƒ‰์†Œโ€™๋ผ ๋ถ€๋ฅด๋Š” ๋ณตํ•ฉ์ฒด๋กœ ๊ฐ€๋“ ์ฐจ ์žˆ๋Š”๋ฐ
์ด๋“ค์€ ๊ด‘ํ•ฉ์„ฑ ๊ณผ์ •์—์„œ ๋น›์˜ ํŒŒ๋™์„ ํก์ˆ˜ํ•ฉ๋‹ˆ๋‹ค.
00:58
as part of photosynthesis,
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01:00
the process by which they convert sunlight into energy.
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๊ด‘ํ•ฉ์„ฑ์€ ํ–‡๋น›์„ ์—๋„ˆ์ง€๋กœ ์ „ํ™˜ํ•˜๋Š” ๊ณผ์ •์ž…๋‹ˆ๋‹ค.
01:03
While different plants have evolved different pigments
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๊ฐ๊ฐ์˜ ์‹๋ฌผ๋“ค์€ ๋‹ค์–‘ํ•œ ์ƒ‰๋“ค์„ ๋‚ด๋Š” ๋‹ค์–‘ํ•œ ์ƒ‰์†Œ๋“ค์„ ๋งŒ๋“ค์–ด ์™”๊ณ ,
01:06
that result in different colors,
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01:08
higher energy wavelengths are more easily absorbed than lower energy ones.
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๋†’์€ ์—๋„ˆ์ง€์˜ ํŒŒ์žฅ์€ ๋‚ฎ์€ ์—๋„ˆ์ง€๋ณด๋‹ค ์ƒ๋Œ€์ ์œผ๋กœ ๋” ์‰ฝ๊ฒŒ ํก์ˆ˜๋ฉ๋‹ˆ๋‹ค.
01:13
And blue light has some of the highest energy wavelengths
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ํŒŒ๋ž€ ๋น›์€ ๊ฐ€์‹œ๊ด‘์„  ๋‚ด์—์„œ ์—๋„ˆ์ง€๊ฐ€ ๊ฐ€์žฅ ๋†’์Šต๋‹ˆ๋‹ค.
01:15
in the visible spectrum.
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01:17
Numerous pigments have evolved to absorb blue light,
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ํŒŒ๋ž€ ๋น›์„ ํก์ˆ˜ํ•˜๊ธฐ ์œ„ํ•ด ์ˆ˜๋งŽ์€ ์ƒ‰์†Œ๊ฐ€ ์ง„ํ™”ํ•ด ์™”๋Š”๋ฐ,
01:20
including chlorophyll, which absorbs blue and red wavelengths
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์ฒญ์ƒ‰๊ณผ ์ ์ƒ‰ ํŒŒ์žฅ์„ ํก์ˆ˜ํ•˜๋Š” ์—ฝ๋ก์†Œ๋„ ์ด ์ค‘ ํ•˜๋‚˜์ž…๋‹ˆ๋‹ค.
01:23
to produce natureโ€™s trademark green.
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์ž์—ฐ์˜ ํŠน์ง•์ธ ์ดˆ๋ก์ƒ‰์„ ๋งŒ๋“ค์–ด๋‚ด์ฃ .
01:26
However, green light is still fairly energetic,
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ํ•˜์ง€๋งŒ ๋…น์ƒ‰ ๋น›๋„ ์ƒ๋‹นํžˆ ๊ฐ•๋ ฅํ•˜๋ฉฐ,
01:29
and the most common class of pigments evolved to absorb these wavelengths
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๊ฐ€์žฅ ์ผ๋ฐ˜์ ์ธ ์ƒ‰์†Œ๋“ค์€ ์ด๋Ÿฌํ•œ ํŒŒ์žฅ๋„ ํก์ˆ˜ํ•˜๋„๋ก ์ง„ํ™”ํ–ˆ์Šต๋‹ˆ๋‹ค.
01:33
as well.
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01:34
There are over 1,100 types of carotenoids,
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์นด๋กœํ…Œ๋…ธ์ด๋“œ๋Š” ์ฒœ๋ฐฑ ๊ฐ€์ง€๊ฐ€ ๋„˜๊ฒŒ ์žˆ๋Š”๋ฐ,
01:38
pigments which absorb high energy blue and green light,
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์ด ์ƒ‰์†Œ๋Š” ๋†’์€ ์—๋„ˆ์ง€์˜ ์ฒญ์ƒ‰๊ณผ ๋…น์ƒ‰ ๋น›์„ ํก์ˆ˜ํ•˜๋Š” ๋™์‹œ์—
01:42
while leaving behind the lower energy red and yellow light.
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์—๋„ˆ์ง€๊ฐ€ ๋‚ฎ์€ ์ ์ƒ‰๊ณผ ํ™ฉ์ƒ‰ ๋น›์„ ๋‚จ๊น๋‹ˆ๋‹ค.
01:46
While carotenoids are present in most green plants,
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์นด๋กœํ…Œ๋…ธ์ด๋“œ๋Š” ๋…น์ƒ‰ ์‹๋ฌผ ๋Œ€๋ถ€๋ถ„์— ๋“ค์–ด ์žˆ์ง€๋งŒ,
01:49
they only become visible each fall when chlorophyll gets broken down
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๊ฐ€์„์—๋งŒ ๋ณผ ์ˆ˜ ์žˆ์Šต๋‹ˆ๋‹ค.
๊ฒจ์šธ์— ์—๋„ˆ์ง€๋ฅผ ์ ˆ์•ฝํ•˜๊ธฐ ์œ„ํ•ด ์—ฝ๋ก์†Œ๊ฐ€ ํŒŒ๊ดด๋˜๋Š” ์‹œ๊ธฐ์ด์ฃ .
01:53
to save energy for the winter.
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01:55
But whether theyโ€™re working alone or side by side,
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ํ•˜์ง€๋งŒ ์นด๋กœํ…Œ๋…ธ์ด๋“œ๊ฐ€ ํ˜ผ์ž ์ผํ•˜๋“  ํ•จ๊ป˜ ์ผํ•˜๋“ ,
01:58
these pigments absorb blue light in virtually all plants.
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์ด ์ƒ‰์†Œ๋Š” ์‚ฌ์‹ค์ƒ ๋ชจ๋“  ์‹๋ฌผ์—์„œ ํŒŒ๋ž€ ๋น›์„ ํก์ˆ˜ํ•ฉ๋‹ˆ๋‹ค.
02:02
Even fruits and flowers that appear blue
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์‹ฌ์ง€์–ด ํŒŒ๋ž—๊ฒŒ ๋ณด์ด๋Š” ๊ณผ์ผ๊ณผ ์‹๋ฌผ์—๋„
02:05
actually have pigments that are red or purple,
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์‚ฌ์‹ค ๋นจ๊ฐ„์ƒ‰๊ณผ ๋ณด๋ผ์ƒ‰ ์ƒ‰์†Œ๊ฐ€ ์žˆ๊ณ 
02:07
and only truly turn blue under specific chemical conditions.
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ํŠน์ •ํ•œ ํ™”ํ•™์  ์กฐ๊ฑด ์•„๋ž˜์—์„œ๋งŒ ํŒŒ๋ž€์ƒ‰์œผ๋กœ ๋ณ€ํ•ฉ๋‹ˆ๋‹ค.
02:12
So, is blue the rarest color in nature?
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๊ทธ๋Ÿฌ๋ฉด ํŒŒ๋ž€์ƒ‰์ด ์ž์—ฐ์—์„œ ๊ฐ€์žฅ ๋“œ๋ฌธ ์ƒ‰์ผ๊นŒ์š”?
02:16
Not quite.
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๋”ฑํžˆ ๊ทธ๋ ‡์ง„ ์•Š์Šต๋‹ˆ๋‹ค.
02:18
Absorption is just one of the two main ways light generates color.
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ํก์ˆ˜๋Š” ๋น›์ด ์ƒ‰์„ ๋งŒ๋“ค์–ด๋‚ด๋Š” ์ฃผ์š” ๋ฐฉ๋ฒ• ๋‘ ๊ฐ€์ง€ ์ค‘ ํ•˜๋‚˜์ผ๋ฟ์ž…๋‹ˆ๋‹ค.
02:23
In the second method, some wavelengths are scattered and amplifiedโ€”
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๋‘ ๋ฒˆ์งธ ๋ฐฉ๋ฒ•์—์„œ๋Š” ๋ช‡๋ช‡ ํŒŒ์žฅ๋“ค์ด ์‚ฐ๋ž€๋˜๊ณ  ์ฆํญ๋˜์–ด
02:27
overpowering the others to determine an object's final color.
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๋‹ค๋ฅธ ํŒŒ์žฅ๋“ค์„ ์••๋„ํ•˜๊ณ  ๋ฌผ์ฒด์˜ ์ƒ‰์„ ์ตœ์ข…์ ์œผ๋กœ ๊ฒฐ์ •์ง“๊ฒŒ ๋ฉ๋‹ˆ๋‹ค.
02:31
These structural colors occur
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์ด๋Ÿฌํ•œ ๊ตฌ์กฐ์  ์ƒ‰์ƒ๋“ค์ด ๋‚˜ํƒ€๋‚˜๋Š” ์ด์œ ๋Š”
02:33
because some objects around us are made of microscopic particles
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์šฐ๋ฆฌ ์ฃผ๋ณ€์˜ ์ผ๋ถ€ ๋ฌผ์ฒด๋“ค์ด ํ˜„๋ฏธ๊ฒฝ์ ์ธ ์ž…์ž๋กœ ์ด๋ฃจ์–ด์ ธ์„œ
02:37
which can form nanostructures that interfere with visible light.
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๊ฐ€์‹œ๊ด‘์„ ์„ ๋ฐฉํ•ดํ•˜๋Š” ๋‚˜๋…ธ ๊ตฌ์กฐ๋ฅผ ํ˜•์„ฑํ•  ์ˆ˜ ์žˆ๊ธฐ ๋•Œ๋ฌธ์ž…๋‹ˆ๋‹ค.
02:42
For example, this feather has no blue pigments in it.
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์˜ˆ๋ฅผ ๋“ค์–ด ์ด ๊นƒํ„ธ์—๋Š” ํŒŒ๋ž€ ์ƒ‰์†Œ๊ฐ€ ๋“ค์–ด ์žˆ์ง€ ์•Š์Šต๋‹ˆ๋‹ค.
02:46
But when light strikes it, the electrons within its nanostructure
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ํ•˜์ง€๋งŒ ๊นƒํ„ธ์— ๋น›์„ ๋น„์ถ”๋ฉด, ๋‚˜๋…ธ ๊ตฌ์กฐ ๋‚ด๋ถ€์— ์žˆ๋Š” ์ „์ž๋“ค์ด
02:50
vibrate at the same frequency as the weight.
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๊ทธ ํŒŒ์žฅ๊ณผ ๊ฐ™์€ ์ฃผํŒŒ์ˆ˜๋กœ ์ง„๋™ํ•˜์ฃ .
02:53
This makes the particles send out a new wave with the same frequency,
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์ด๋Š” ์ž…์ž๋“ค์ด ๊ฐ™์€ ์ฃผํŒŒ์ˆ˜์˜ ์ƒˆ๋กœ์šด ํŒŒ๋™์„ ๋ฐฉ์ถœํ•˜๊ฒŒ ํ•˜๊ณ ,
02:57
starting a chain reaction that amplifies and scatters blue light.
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ํŒŒ๋ž€ ๋น›์„ ์ฆํญํ•˜๊ณ  ์‚ฐ๋ž€ํ•˜๋Š” ์—ฐ์‡„ ๋ฐ˜์‘์„ ์‹œ์ž‘ํ•ฉ๋‹ˆ๋‹ค.
03:03
Nanostructures of various shapes and sizes scatter different wavelengths,
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๋‹ค์–‘ํ•œ ๋ชจ์–‘๊ณผ ํฌ๊ธฐ์˜ ๋‚˜๋…ธ ๊ตฌ์กฐ๋Š” ๋‹ค๋ฅธ ํŒŒ์žฅ๋“ค์„ ์‚ฐ๋ž€ํ•˜์ง€๋งŒ,
03:07
but they typically scatter high-energy wavelengths most easilyโ€”
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๋†’์€ ์—๋„ˆ์ง€์˜ ํŒŒ์žฅ๋“ค์„ ์ผ๋ฐ˜์ ์œผ๋กœ ๊ฐ€์žฅ ์‰ฝ๊ฒŒ ์‚ฐ๋ž€ํ•˜๋ฉฐ
03:11
making blue the most common structural color.
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ํŒŒ๋ž€์ƒ‰์„ ๊ฐ€์žฅ ํ”ํ•œ ๊ตฌ์กฐ์  ์ƒ‰์ƒ์œผ๋กœ ๋งŒ๋“ญ๋‹ˆ๋‹ค.
03:16
Meanwhile, low-energy wavelengths like red are only weakly scattered.
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ํ•œํŽธ, ๋นจ๊ฐ• ๊ฐ™์€ ๋‚ฎ์€ ์—๋„ˆ์ง€์˜ ํŒŒ์žฅ๋“ค์€ ์•ฝํ•˜๊ฒŒ ์‚ฐ๋ž€๋  ๋ฟ์ž…๋‹ˆ๋‹ค.
03:20
Even when something evolves specific nanostructures
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๋งŒ์ผ ๋ฌด์–ธ๊ฐ€๊ฐ€ ํŠน์ˆ˜ํ•œ ๋‚˜๋…ธ ๊ตฌ์กฐ๋ฅผ ๋ฐœ์ „์‹œ์ผœ์„œ
03:23
that strongly scatter red light
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๋ถ‰์€๋น›์„ ๊ฐ•ํ•˜๊ฒŒ ์‚ฐ๋ž€ํ•˜๋”๋ผ๋„
03:25
they still resonate with other wavelengths,
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์—ฌ์ „ํžˆ ๋‹ค๋ฅธ ํŒŒ์žฅ๋“ค๊ณผ ๊ณต๋ช…ํ•˜์—ฌ
03:27
only appearing red at some angles of illumination and observation.
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ํŠน์ • ๊ฐ๋„๋กœ ๋น›๋‚˜๊ฑฐ๋‚˜ ๊ด€์ฐฐํ•ด์•ผ๋งŒ ๋ถ‰์€์ƒ‰์œผ๋กœ ๋ณด์ž…๋‹ˆ๋‹ค.
03:32
This gives us two contenders for natureโ€™s rarest color:
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์ด๋กœ์จ ์ž์—ฐ์˜ ๊ฐ€์žฅ ํฌ์†Œํ•œ ์ƒ‰์œผ๋กœ ๊ฒฝ์Ÿ์ž๊ฐ€ ๋‘˜ ๋‚จ์Šต๋‹ˆ๋‹ค.
03:36
absorption-based matte blues and structural iridescent reds.
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ํก์ˆ˜์—์„œ ๋‚˜์˜จ ๋ฌด๊ด‘ ์ฒญ์ƒ‰๊ณผ ๊ฐ๋„์— ๋”ฐ๋ผ ๋ณ€ํ•˜๋Š” ๋ถ‰์€ ๊ตฌ์กฐ์ƒ‰์ž…๋‹ˆ๋‹ค.
03:41
Between these two, structural reds are much rarer.
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์ด ๋‘˜ ์ค‘ ๋ถ‰์€ ๊ตฌ์กฐ์ƒ‰์ด ํ›จ์”ฌ ๋“œ๋ฌผ์ฃ .
03:45
Only a handful of animals and rocks scatter red light
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๋ช‡ ์•ˆ ๋˜๋Š” ๋™๋ฌผ๊ณผ ์•”์„๋งŒ์ด ๋ถ‰์€ ๋น›์„ ์‚ฐ๋ž€ํ•˜๋ฉฐ
03:48
and none of them scatter red light exclusively.
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๊ทธ์ค‘ ๋ถ‰์€ ๋น›๋งŒ์„ ์‚ฐ๋ž€ํ•˜๋Š” ๊ฑด ํ•˜๋‚˜๋„ ์—†์Šต๋‹ˆ๋‹ค.
03:51
But since red and blue are rare in one way and common in another,
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ํ•˜์ง€๋งŒ ๋นจ๊ฐ•๊ณผ ํŒŒ๋ž‘์ด ํ•œํŽธ์œผ๋กœ๋Š” ๋“œ๋ฌผ๊ณ  ๋‹ค๋ฅธ ํ•œํŽธ์œผ๋กœ๋Š” ํ”ํ•˜๊ธฐ ๋•Œ๋ฌธ์—,
03:55
we actually end up seeing both colors quite often.
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์‹ค์ œ๋กœ๋Š” ๋‘ ์ƒ‰ ๋ชจ๋‘๋ฅผ ๊ฝค ์ž์ฃผ ๋ณด๊ฒŒ ๋ฉ๋‹ˆ๋‹ค.
03:59
So what color is least likely to be generated
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๊ทธ๋ ‡๋‹ค๋ฉด ๊ตฌ์กฐ์ƒ‰๊ณผ ํก์ˆ˜์—์„œ ์˜ค๋Š” ์ƒ‰์ƒ๋“ค์„ ํ†ตํ‹€์–ด
04:02
in structural and absorption-based forms?
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์–ด๋–ค ์ƒ‰์ƒ์ด ๊ฐ€์žฅ ์ƒ์„ฑ๋˜๊ธฐ ํž˜๋“ค๊นŒ์š”?
04:06
The answer is violet.
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์ •๋‹ต์€ ๋ณด๋ผ์ƒ‰์ž…๋‹ˆ๋‹ค.
04:08
Not to be confused with purple, which is just a combination of red and blue light,
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๋ถ‰์€๋น›๊ณผ ํ‘ธ๋ฅธ๋น›์„ ํ•ฉ์นœ ๊ฒƒ์— ๋ถˆ๊ณผํ•œ ์ž์ฃผ์ƒ‰๊ณผ ๋‹ฌ๋ฆฌ,
04:13
violet occupies a small portion of the visible light spectrum.
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๋ณด๋ผ์ƒ‰์€ ๊ฐ€์‹œ๊ด‘์„  ๋น›๋ ์—์„œ ์ž‘์€ ๋ถ€๋ถ„์„ ์ฐจ์ง€ํ•ฉ๋‹ˆ๋‹ค.
04:17
There are only a few nanostructures precise enough
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๋ณด๋ผ์ƒ‰ ๋น›๋งŒ์„ ์‚ฐ๋ž€ํ•  ์ •๋„๋กœ
04:20
to exclusively scatter violet light.
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์ •ํ™•ํ•œ ๋‚˜๋…ธ ๊ตฌ์กฐ๋Š” ๋งค์šฐ ๋“œ๋ญ…๋‹ˆ๋‹ค.
04:23
And violet wavelengths are even more energetic than blue ones,
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๊ทธ๋ฆฌ๊ณ  ๋ณด๋ผ์ƒ‰ ํŒŒ์žฅ์€ ํ‘ธ๋ฅธ์ƒ‰๋ณด๋‹ค ์—๋„ˆ์ง€๊ฐ€ ๋” ํฌ๊ธฐ ๋•Œ๋ฌธ์—,
04:27
making them likely to be absorbed by pigment.
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์ƒ‰์†Œ์—์„œ ํก์ˆ˜๋  ํ™•๋ฅ ์ด ๋†’์Šต๋‹ˆ๋‹ค.
04:30
So if you ever stumble onto the iridescent violet wings
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๊ทธ๋Ÿฌ๋‹ˆ๊นŒ ๋ณด๋ผ๋น› ๊ตฌ์กฐ์ƒ‰ ๋‚ ๊ฐœ๊ฐ€ ์žˆ๋Š”
04:34
of a purple emperor butterfly,
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๋ณด๋ผ์ƒ‰ ํ™ฉ์ œ๋‚˜๋น„๋ฅผ ์šฐ์—ฐํžˆ ๋ฐœ๊ฒฌํ•œ๋‹ค๋ฉด
04:37
take a second to appreciate one of natureโ€™s rarest spectacles.
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์ž์—ฐ์˜ ์ง„๊ท€ํ•œ ์žฅ๊ด€์„ ์ž ์‹œ ๋ฉˆ์ถฐ์„œ ๊ฐ์ƒํ•ด ๋ณด์„ธ์š”.
์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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