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1. Shard Calculation

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Calculated Shard: 97 (from laksa169)

2. Crawled Status Check

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3. Robots.txt Check

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4. Spam/Ban Check

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5. Seen Status Check

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๐Ÿ“„
INDEXABLE
โœ…
CRAWLED
5 days ago
๐Ÿค–
ROBOTS ALLOWED

Page Info Filters

FilterStatusConditionDetails
HTTP statusPASSdownload_http_code = 200HTTP 200
Age cutoffPASSdownload_stamp > now() - 6 MONTH0.2 months ago
History dropPASSisNull(history_drop_reason)No drop reason
Spam/banPASSfh_dont_index != 1 AND ml_spam_score = 0ml_spam_score=0
CanonicalPASSmeta_canonical IS NULL OR = '' OR = src_unparsedNot set

Page Details

PropertyValue
URLhttps://www.kr-mat.gelsonluz.com/2021/02/specific-heat.html
Last Crawled2026-04-09 07:14:14 (5 days ago)
First Indexed2023-06-20 11:47:18 (2 years ago)
HTTP Status Code200
Meta Title์—ด์šฉ๋Ÿ‰ Specific Heat 2021 ๐Ÿ”ฅ
Meta Descriptionnull
Meta Canonicalnull
Boilerpipe Text
์—ด์šฉ๋Ÿ‰ ์€ ์ˆ˜์‹ ๋œ ์—ด ๋ฐ ์—ด ๋ณ€ํ™”์™€ ๊ด€๋ จ๋œ ๋ฌผ๋ฆฌ์  ์›…์žฅํ•จ์ž…๋‹ˆ๋‹ค. ๊ทธ๊ฒƒ์€ ์šฐ๋ฆฌ์—๊ฒŒ ์›์†Œ ๋˜๋Š” ๋ฌผ์งˆ์˜ ๊ฐ 1g์— ๋Œ€ํ•ด 1 ยฐ C์˜ ์˜จ๋„๋ฅผ ์ฆ๊ฐ€ (๋˜๋Š” ๊ฐ์†Œ)ํ•˜๋Š” ๋ฐ ํ•„์š”ํ•œ ์—ด์˜ ์–‘์„ ์•Œ๋ ค์ค๋‹ˆ๋‹ค. ์ฆ‰, ๋ฌผ์งˆ์˜ ์—ด์šฉ๋Ÿ‰๊ฐ€ ๋†’์„์ˆ˜๋ก ์˜จ๋„ ๋ณ€ํ™”๊ฐ€ ๋ฐœ์ƒํ•˜๊ธฐ ์œ„ํ•ด ๊ณต๊ธ‰(๋˜๋Š” ์ œ๊ฑฐ)ํ•ด์•ผ ํ•˜๋Š” ์—ด์˜ ์–‘์ด ํด ์ˆ˜ ์žˆ์Šต๋‹ˆ๋‹ค. ํฌ๋ฎฌ๋Ÿฌ ์šฐ๋ฆฌ๋Š” ๋ฌผ์งˆ์˜ ์—ด์šฉ๋Ÿ‰๋ฅผ ๊ณ„์‚ฐํ•˜๊ธฐ ์œ„ํ•ด ๋‹ค์Œ๊ณผ ๊ฐ™์€ ๊ณต์‹์„ ์‚ฌ์šฉํ•ฉ๋‹ˆ๋‹ค : c = Q/(m.ฮ”ฮธ), c = C/m (์ผ๋ฐ˜์ ์œผ๋กœ ์ด ์ˆ˜์‹์€ Q=m.c.ฮ”ฮธ๋กœ ํ‘œ์‹œ๋ฉ๋‹ˆ๋‹ค. ์กด์žฌ: c: ์—ด์šฉ๋Ÿ‰ (cal/gยฐC ๋˜๋Š” J/Kg.K) Q: ์—ด๋Ÿ‰(๋ผ์ž„ ๋˜๋Š” J) m: ์งˆ๋Ÿ‰(g ๋˜๋Š” Kg) ฮ”ฮธ: ์˜จ๋„ ๋ณ€ํ™”(ยฐC ๋˜๋Š” K) C: ์—ด ์šฉ๋Ÿ‰(cal/ยฐC ๋˜๋Š” J/K) ์œ ๋‹› ๊ตญ์ œ ์‹œ์Šคํ…œ(SI) ์—ด์šฉ๋Ÿ‰๋Š” J/Kg.K(ํ‚ฌ๋กœ๊ทธ๋žจ๋‹น ์ค„๊ณผ ์ผˆ๋นˆ)๋กœ ์ธก์ •๋ฉ๋‹ˆ๋‹ค. ๊ธฐ์กด cal/g.ยฐC ๋‹จ์œ„(๊ทธ๋žจ๋‹น ์นผ๋กœ๋ฆฌ๋ฐ ์„ญ์”จ ์ •๋„)๋Š” ์—ฌ์ „ํžˆ ๋งค์šฐ ์ผ๋ฐ˜์ ์ž…๋‹ˆ๋‹ค. ์—ด์šฉ๋Ÿ‰ ๋ชฐ์–ด (kg) ๋˜๋Š” (g)์—์„œ ๋ฌผ์งˆ์„ ์ •์˜ํ•˜๋Š” ๋Œ€์‹ , ์šฐ๋ฆฌ๋Š” ์›์ž ๋˜๋Š” ๋ถ„์ž์˜ "mol" ๋˜๋Š” ์ˆ˜๋ฅผ ์‚ฌ์šฉํ•ฉ๋‹ˆ๋‹ค. ์—ด ์šฉ๋Ÿ‰ ์—ด ์šฉ๋Ÿ‰์€ ์ฒด๋‚ด์— ์กด์žฌํ•˜๋Š” ์—ด์˜ ์–‘์œผ๋กœ, ๊ทธ๊ฒƒ์— ์˜ํ•ด ๊ณ ํ†ต๋ฐ›๋Š” ์˜จ๋„ ๋ณ€ํ™”์™€ ๊ด€๋ จํ•˜์—ฌ. ๋‹ค์Œ ์ˆ˜์‹: ์œผ๋กœ ๊ณ„์‚ฐํ•  ์ˆ˜ ์žˆ์Šต๋‹ˆ๋‹ค. C = Q/ฮ”ฮธ C = m.c ์–ด๋””, C: ์—ด ์šฉ๋Ÿ‰(cal/ยฐC ๋˜๋Š” J/K) Q: ์—ด๋Ÿ‰(๋ผ์ž„ ๋˜๋Š” J) ฮ”ฮธ: ์˜จ๋„ ๋ณ€ํ™”(ยฐC ๋˜๋Š” K) m: ์งˆ๋Ÿ‰(g ๋˜๋Š” Kg) c: ์—ด์šฉ๋Ÿ‰ (cal/gยฐC ๋˜๋Š” J/KgK) ์œ„ํ‚คํ”ผ๋””์•„์— ๋”ฐ๋ฅด๋ฉดโ€ฆ ์—ด์—ญํ•™์—์„œ ๋ฌผ์งˆ์˜ ์—ด์šฉ๋Ÿ‰ ์šฉ๋Ÿ‰(๊ธฐํ˜ธ cp)์€ ๋ฌผ์งˆ ์‹œ๋ฃŒ์˜ ์—ด์šฉ๋Ÿ‰์„ ์‹œ๋ฃŒ์˜ ์งˆ๋Ÿ‰์œผ๋กœ ๋‚˜๋ˆˆ ๊ฐ’์ž…๋‹ˆ๋‹ค. ๋น„๊ณต์‹์ ์œผ๋กœ, ์˜จ๋„๋ฅผ ํ•œ ๋‹จ์œ„ ์ฆ๊ฐ€์‹œํ‚ค๊ธฐ ์œ„ํ•ด ๋ฌผ์งˆ์˜ ํ•œ ๋‹จ์œ„ ์งˆ๋Ÿ‰์— ์ถ”๊ฐ€ํ•ด์•ผ ํ•˜๋Š” ์—ด์˜ ์–‘์ž…๋‹ˆ๋‹ค. ๋ชฉ์ฐจ ์ด์ œ ๋‹ค์Œ์— ๋Œ€ํ•ด ์ด์•ผ๊ธฐํ•  ์‹œ๊ฐ„์ž…๋‹ˆ๋‹ค. ์—ด์šฉ๋Ÿ‰์€(๋Š”) ๋ฌด์Šจ ๋œป์ธ๊ฐ€์š”? ์—ด์šฉ๋Ÿ‰์ด ์Œ์ˆ˜์ผ ์ˆ˜ ์žˆ์Šต๋‹ˆ๊นŒ? ์—ด์šฉ๋Ÿ‰์€ ๋ฌด์—‡์„ ์ธก์ •ํ•ฉ๋‹ˆ๊นŒ? ์—ด์šฉ๋Ÿ‰์€(๋Š”) ๋ฌด์—‡์— ์‚ฌ์šฉ๋ฉ๋‹ˆ๊นŒ? ์—ด์šฉ๋Ÿ‰ ๋ฌผ์งˆ์„ ์‹๋ณ„ํ•˜๋Š” ๋ฐ ์‚ฌ์šฉํ•  ์ˆ˜ ์žˆ์Šต๋‹ˆ๊นŒ? ๋น„์—ด ๊ธฐํ˜ธ ๋น„์—ด ๋Œ€ ์—ด์šฉ๋Ÿ‰ ๋น„์—ด ๋Œ€ ์ž ์—ด ๋น„์—ด ๋Œ€ ์—ด์ „๋„์œจ ์—ด์šฉ๋Ÿ‰์€(๋Š”) ์˜จ๋„์™€ ์–ด๋–ค ๊ด€๋ จ์ด ์žˆ์Šต๋‹ˆ๊นŒ? ์—ด์šฉ๋Ÿ‰ ๋น„์œจ์ด๋ž€ ์—ด์šฉ๋Ÿ‰ ๋น„์œจ ๊ณ„์‚ฐ ๋ฐฉ๋ฒ• ์—ด์šฉ๋Ÿ‰ ์šฉ๋Ÿ‰์„ ์–ด๋–ป๊ฒŒ ๊ณ„์‚ฐํ•ฉ๋‹ˆ๊นŒ? ์—ด์šฉ๋Ÿ‰์„ ๊ฒฐ์ •ํ•˜๋Š” ๋ฐฉ๋ฒ• ๋น„์—ด ๋ฐฉ์ •์‹ ์ผ์ •ํ•œ ์••๋ ฅ์—์„œ ์—ด์šฉ๋Ÿ‰๋ฅผ ๊ณ„์‚ฐํ•˜๋Š” ๋ฐฉ๋ฒ• ์—ด๋Ÿ‰๊ณ„๋ฅผ ์‚ฌ์šฉํ•˜์—ฌ ์—ด์šฉ๋Ÿ‰์„ ์ฐพ๋Š” ๋ฐฉ๋ฒ• ์—ด์šฉ๋Ÿ‰์œผ๋กœ ์ตœ์ข… ์˜จ๋„๋ฅผ ์ฐพ๋Š” ๋ฐฉ๋ฒ• ์–ด๋–ค ๋ฌผ์งˆ์ด ๊ฐ€์žฅ ๋†’์€ ์—ด์šฉ๋Ÿ‰ ๋น„์—ด ๋‹จ์œ„ ๋ชฐ ์—ด์šฉ๋Ÿ‰์„ ์—ด์šฉ๋Ÿ‰๋กœ ๋ณ€ํ™˜ํ•˜๋Š” ๋ฐฉ๋ฒ• ์—ด์šฉ๋Ÿ‰ ์Œ์ˆ˜์ผ ์ˆ˜ ์žˆ์Šต๋‹ˆ๊นŒ? ์—ด์šฉ๋Ÿ‰์ด ์Œ์ˆ˜์ผ ์ˆ˜ ์žˆ๋‹ค๋Š” ๊ฒƒ์€ ์ผ๋ฐ˜์ ์ธ ์˜คํ•ด์ž…๋‹ˆ๋‹ค. ๊ฐ’์ด ์–‘์ˆ˜์ด๊ฑฐ๋‚˜ 0์ผ ์ˆ˜๋„ ์žˆ์ง€๋งŒ ๊ฒฐ์ฝ” ์Œ์ˆ˜์ผ ์ˆ˜๋Š” ์—†์Šต๋‹ˆ๋‹ค. ์˜คํ•ด๋Š” ์• ์ดˆ์— ์—ด์šฉ๋Ÿ‰์ด ๋ฌด์—‡์ธ์ง€ ์ดํ•ดํ•˜์ง€ ๋ชปํ•˜๋Š” ๋ฐ์„œ ์˜ต๋‹ˆ๋‹ค. ๋น„์—ด์€ ๋ฌผ์งˆ 1g์„ ์„ญ์”จ 1๋„ ์˜ฌ๋ฆฌ๋Š” ๋ฐ ํ•„์š”ํ•œ ์—๋„ˆ์ง€๋ฅผ ๋‚˜ํƒ€๋ƒ…๋‹ˆ๋‹ค. ์—ด์šฉ๋Ÿ‰์€(๋Š”) ๋ฌด์—‡์— ์‚ฌ์šฉ๋ฉ๋‹ˆ๊นŒ? ๋น„์—ด์€ ํŠน์ • ๋ฌผ์งˆ์˜ ์ฃผ์–ด์ง„ ์งˆ๋Ÿ‰์˜ ์˜จ๋„๋ฅผ ์ผ์ •๋Ÿ‰ ์ฆ๊ฐ€์‹œํ‚ค๋Š” ๋ฐ ํ•„์š”ํ•œ ์—ด ์—๋„ˆ์ง€์˜ ์–‘์„ ๋‚˜ํƒ€๋‚ด๋Š” ์—ด์—ญํ•™ ๋ฐ ์—ด๋Ÿ‰๊ณ„์—์„œ ์‚ฌ์šฉ๋˜๋Š” ์ธก์ •์ž…๋‹ˆ๋‹ค. ์—ด์šฉ๋Ÿ‰ ๋ฌผ์งˆ์„ ์‹๋ณ„ํ•˜๋Š” ๋ฐ ์‚ฌ์šฉํ•  ์ˆ˜ ์žˆ์Œ ๋น„์—ด์€ ์กด์žฌํ•˜๋Š” ๋ฌผ์งˆ์˜ ์–‘์— ์˜์กดํ•˜์ง€ ์•Š๋Š” ์ง‘์ค‘์ ์ธ ํŠน์„ฑ(๋ฐ€๋„, ์ƒ‰์ƒ ๋“ฑ)์ž…๋‹ˆ๋‹ค. ์˜ˆ, ์ด๊ฒƒ์€ ์—ด์šฉ๋Ÿ‰์„ ์‚ฌ์šฉํ•˜์—ฌ ๋ฌผ์งˆ์„ ์‹๋ณ„ํ•  ์ˆ˜ ์žˆ๋„๋ก ํ•ฉ๋‹ˆ๋‹ค. ๋น„์—ด ๊ธฐํ˜ธ CP ๋น„์—ด ๋Œ€ ์—ด์šฉ๋Ÿ‰ ๋น„์—ด์€ ๋ฌผ์งˆ์˜ ๋‹จ์œ„ ์งˆ๋Ÿ‰์ด ์˜จ๋„๋ฅผ 1โ„ƒ ๋˜๋Š” 1k ์˜ฌ๋ฆฌ๋Š”๋ฐ ํ•„์š”ํ•œ ์—ด์—๋„ˆ์ง€์˜ ์–‘์ž…๋‹ˆ๋‹ค. ๋ฐ˜๋ฉด์— ์—ด์šฉ๋Ÿ‰์€ ๋ฌผ์งˆ์ด ์˜จ๋„๋ฅผ 1โ„ƒ ๋˜๋Š” 1K ์˜ฌ๋ฆฌ๋Š” ๋ฐ ํ•„์š”ํ•œ ์—ด์—๋„ˆ์ง€์˜ ์–‘์ž…๋‹ˆ๋‹ค. ๋น„์—ด ๋Œ€ ์ž ์—ด ์ž ์—ด์€ ๋ฌผ์งˆ์ด ์ƒ ๋ณ€ํ™”๋ฅผ ๊ฒช์„ ๋•Œ ํก์ˆ˜๋˜๊ฑฐ๋‚˜ ๋ฐฉ์ถœ๋˜๋Š” ์—๋„ˆ์ง€์ž…๋‹ˆ๋‹ค. ๋น„์—ด์€ ์ผ์ •ํ•œ ์••๋ ฅ์—์„œ ๋ฌผ์งˆ 1g์˜ ์˜จ๋„๋ฅผ ์„ญ์”จ 1๋„(๋˜๋Š” 1์ผˆ๋นˆ) ๋†’์ด๋Š” ๋ฐ ํ•„์š”ํ•œ ์—ด๋Ÿ‰์ž…๋‹ˆ๋‹ค. ๋น„์—ด ๋Œ€ ์—ด์ „๋„์œจ ์—ด์ „๋„์œจ์€ ์—ด์„ ์ „๋‹ฌํ•˜๋Š” ๋Šฅ๋ ฅ์ด๊ณ  ์—ด์šฉ๋Ÿ‰๋Š” ํŠน์ • ์–‘์˜ ์—ด์„ ๋ณด์œ ํ•˜๋Š” ๋Šฅ๋ ฅ์ž…๋‹ˆ๋‹ค. ์—ด์šฉ๋Ÿ‰์€(๋Š”) ์˜จ๋„์™€ ์–ด๋–ค ๊ด€๋ จ์ด ์žˆ์Šต๋‹ˆ๊นŒ? ์ด ์—ด์šฉ๋Ÿ‰๊ณผ ๋‹ฌ๋ฆฌ ์—ด์šฉ๋Ÿ‰ ์šฉ๋Ÿ‰์€ ์งˆ๋Ÿ‰์ด๋‚˜ ๋ถ€ํ”ผ์™€ ๋ฌด๊ด€ํ•ฉ๋‹ˆ๋‹ค. ๊ทธ๊ฒƒ์€ ์ฃผ์–ด์ง„ ๋ฌผ์งˆ์˜ ์˜จ๋„๋ฅผ ์„ญ์”จ 1๋„ ์˜ฌ๋ฆฌ๊ธฐ ์œ„ํ•ด ์ฃผ์–ด์ง„ ๋ฌผ์งˆ์˜ ๋‹จ์œ„ ์งˆ๋Ÿ‰์— ์–ผ๋งˆ๋‚˜ ๋งŽ์€ ์—ด์„ ๊ฐ€ํ•ด์•ผ ํ•˜๋Š”์ง€๋ฅผ ์„ค๋ช…ํ•ฉ๋‹ˆ๋‹ค. ์—ด์šฉ๋Ÿ‰๊ณผ ์—ด์šฉ๋Ÿ‰๋Š” C=cm ๋˜๋Š” c=C/m๋กœ ๊ด€๋ จ๋ฉ๋‹ˆ๋‹ค. ์—ด์šฉ๋Ÿ‰ ๋น„์œจ ๊ณ„์‚ฐ ๋ฐฉ๋ฒ• K = cp / cv. ์—ด์šฉ๋Ÿ‰์˜ ๋น„์œจ์€ ๋‹ค์Œ๊ณผ ๊ฐ™์ด ํ‘œํ˜„ํ•  ์ˆ˜ ์žˆ์Šต๋‹ˆ๋‹ค. K = cp / cv ์—ด์šฉ๋Ÿ‰s ฮณ = CP/CV์˜ ๋น„์œจ์€ ๋‹จ์—ด ์—”์ง„ ํ”„๋กœ์„ธ์Šค์™€ ๊ฐ€์Šค์—์„œ ์Œ์†์„ ๊ฒฐ์ •ํ•˜๋Š” ์š”์ธ์ž…๋‹ˆ๋‹ค. ๋น„์—ด ๋ฐฉ์ •์‹ Cv = Q / (ฮ”T โจ‰ m) . ์—ด์šฉ๋Ÿ‰ ์šฉ๋Ÿ‰์€ ์ผ์ •ํ•œ ๋ถ€ํ”ผ์˜ ๋ฌผ์งˆ 1๋‹จ์œ„ ์งˆ๋Ÿ‰์„ 1ยฐC๋งŒํผ ๋ณ€ํ™”์‹œํ‚ค๋Š” ๋ฐ ํ•„์š”ํ•œ ์—ด ๋˜๋Š” ์—๋„ˆ์ง€์ž…๋‹ˆ๋‹ค. ๊ณต์‹์€ Cv = Q / (ฮ”T โจ‰ m) ์ž…๋‹ˆ๋‹ค. ์—ด์šฉ๋Ÿ‰์œผ๋กœ ์ตœ์ข… ์˜จ๋„๋ฅผ ์ฐพ๋Š” ๋ฐฉ๋ฒ• ๋น„์—ด ๋ฐฉ์ •์‹ Q=mcฮ”T๋ฅผ ๋‹ค์‹œ ์ž‘์„ฑํ•ฉ๋‹ˆ๋‹ค. ๋ฌธ์ž "Q"๋Š” ์นผ๋กœ๋ฆฌ ๊ตํ™˜์œผ๋กœ ์ „๋‹ฌ๋œ ์—ด, "m"์€ ๊ฐ€์—ด๋˜๋Š” ๋ฌผ์งˆ์˜ ์งˆ๋Ÿ‰(g), "c"๋Š” ์—ด์šฉ๋Ÿ‰ ์šฉ๋Ÿ‰ ๋ฐ ์ •์  ๊ฐ’, "ฮ”T"๋Š” ๋ณ€ํ™”๋Ÿ‰์ž…๋‹ˆ๋‹ค. ์˜จ๋„ ๋ณ€ํ™”๋ฅผ ๋ฐ˜์˜ํ•˜๊ธฐ ์œ„ํ•ด ์„ญ์”จ ์˜จ๋„๋กœ ํ‘œ์‹œํ•ฉ๋‹ˆ๋‹ค. ์–ด๋–ค ๋ฌผ์งˆ์ด ๊ฐ€์žฅ ๋†’์€๊ฐ€ ์—ด์šฉ๋Ÿ‰ ๋ฌผ. ๋ฌผ์˜ ๋น„์—ด์€ ๋‹ค๋ฅธ ์–ด๋–ค ๋ฌผ์งˆ์ด๋‚˜ ๋งค์งˆ๋ณด๋‹ค ๋†’์Šต๋‹ˆ๋‹ค. ๋ฌผ์€ ๋ชจ๋“  ๋ฌผ์งˆ์˜ ์˜จ๋„๋ฅผ ์กฐ์ ˆํ•˜๋Š” ๋ฐ ์ค‘์š”ํ•œ ์—ญํ• ์„ ํ•ฉ๋‹ˆ๋‹ค. ๋น„์—ด ๋‹จ์œ„ ์—ด์šฉ๋Ÿ‰์˜ SI ๋‹จ์œ„๋Š” ์ค„๋‹น ์ผˆ๋นˆ ๋ฐ ํ‚ฌ๋กœ๊ทธ๋žจ, J/(K kg)์ž…๋‹ˆ๋‹ค. cal/gยบC์ผ ์ˆ˜๋„ ์žˆ์Šต๋‹ˆ๋‹ค. ๋ชฐ ์—ด์šฉ๋Ÿ‰์„ ์—ด์šฉ๋Ÿ‰์œผ๋กœ ๋ณ€ํ™˜ํ•˜๋Š” ๋ฐฉ๋ฒ• ๋ชฐ ์—ด์šฉ๋Ÿ‰์œผ๋กœ ๋ณ€ํ™˜ํ•˜๋ ค๋ฉด ๋ชฐ ์—ด์šฉ๋Ÿ‰ ๊ณต์‹์„ ์‚ฌ์šฉํ•  ์ˆ˜ ์žˆ์Šต๋‹ˆ๋‹ค. ์—ด์šฉ๋Ÿ‰์— ๋ฉ”ํƒ„์˜ ๋ชฐ ์งˆ๋Ÿ‰์„ ๊ณฑํ•ฉ๋‹ˆ๋‹ค. ๋น„๋””์˜ค: ์—ด์šฉ๋Ÿ‰, ์—ด์šฉ๋Ÿ‰ ๋ฐ... ์ด์ œ "์—ด์šฉ๋Ÿ‰, ์—ด์šฉ๋Ÿ‰, ๊ทธ๋ฆฌ๊ณ ..."๋ผ๋Š” ๊ด€๋ จ ๋น„๋””์˜ค๋ฅผ ๋ณด์—ฌ๋“œ๋ฆฌ๊ณ  ์‹ถ์Šต๋‹ˆ๋‹ค. ํŒ: ํ•„์š”ํ•œ ๊ฒฝ์šฐ ์บก์…˜ ๋ฒ„ํŠผ์„ ์ผœ์‹ญ์‹œ์˜ค. ์˜์–ด์— ์ต์ˆ™ํ•˜์ง€ ์•Š์€ ๊ฒฝ์šฐ ์„ค์ • ๋ฒ„ํŠผ์—์„œ "์ž๋™ ๋ฒˆ์—ญ"์„ ์„ ํƒํ•˜์‹ญ์‹œ์˜ค. ์ธ์šฉ ๊ณผ์ œ ๋‚˜ ์—์„ธ์ด์— ์‚ฌ์‹ค์ด๋‚˜ ์ •๋ณด๋ฅผ ํฌํ•จํ•ด์•ผ ํ•  ๋•Œ ํ•ด๋‹น ์ •๋ณด๋ฅผ ์–ด๋””์„œ ์–ด๋–ป๊ฒŒ ์ฐพ์•˜๋Š”์ง€ ํฌํ•จํ•ด์•ผ ํ•ฉ๋‹ˆ๋‹ค (์—ด์šฉ๋Ÿ‰). ๊ทธ๊ฒƒ์€ ๋‹น์‹ ์˜ ๋…ผ๋ฌธ์— ์‹ ๋ขฐ์„ฑ์„ ์ œ๊ณตํ•˜๊ณ  ๋•Œ๋กœ๋Š” ๊ณ ๋“ฑ ๊ต์œก์—์„œ ํ•„์š”ํ•ฉ๋‹ˆ๋‹ค. ๋‹น์‹ ์˜ ์ธ์ƒ์„ ์‰ฝ๊ฒŒ (๋ฐ ์ธ์šฉ) ์‰ฝ๊ฒŒํ•˜๊ธฐ ์œ„ํ•ด ๊ทธ๋ƒฅ ๋ณต์‚ฌํ•˜๊ณ  ๊ณผ์ œ ๋˜๋Š” ์—์„ธ์ด์— ์•„๋ž˜์˜ ์ •๋ณด๋ฅผ ๋ถ™์—ฌ : Luz, Gelson. ์—ด์šฉ๋Ÿ‰. ๋ฌผ์ž ๋ธ”๋กœ๊ทธ. 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C = Q/ฮ”ฮธ C = m.c ์–ด๋””, - C: ์—ด ์šฉ๋Ÿ‰(cal/ยฐC ๋˜๋Š” J/K) - Q: ์—ด๋Ÿ‰(๋ผ์ž„ ๋˜๋Š” J) - ฮ”ฮธ: ์˜จ๋„ ๋ณ€ํ™”(ยฐC ๋˜๋Š” K) - m: ์งˆ๋Ÿ‰(g ๋˜๋Š” Kg) - c: ์—ด์šฉ๋Ÿ‰ (cal/gยฐC ๋˜๋Š” J/KgK) ## ์œ„ํ‚คํ”ผ๋””์•„์— ๋”ฐ๋ฅด๋ฉดโ€ฆ ์—ด์—ญํ•™์—์„œ ๋ฌผ์งˆ์˜ ์—ด์šฉ๋Ÿ‰ ์šฉ๋Ÿ‰(๊ธฐํ˜ธ cp)์€ ๋ฌผ์งˆ ์‹œ๋ฃŒ์˜ ์—ด์šฉ๋Ÿ‰์„ ์‹œ๋ฃŒ์˜ ์งˆ๋Ÿ‰์œผ๋กœ ๋‚˜๋ˆˆ ๊ฐ’์ž…๋‹ˆ๋‹ค. ๋น„๊ณต์‹์ ์œผ๋กœ, ์˜จ๋„๋ฅผ ํ•œ ๋‹จ์œ„ ์ฆ๊ฐ€์‹œํ‚ค๊ธฐ ์œ„ํ•ด ๋ฌผ์งˆ์˜ ํ•œ ๋‹จ์œ„ ์งˆ๋Ÿ‰์— ์ถ”๊ฐ€ํ•ด์•ผ ํ•˜๋Š” ์—ด์˜ ์–‘์ž…๋‹ˆ๋‹ค. ## ๋ชฉ์ฐจ ์ด์ œ ๋‹ค์Œ์— ๋Œ€ํ•ด ์ด์•ผ๊ธฐํ•  ์‹œ๊ฐ„์ž…๋‹ˆ๋‹ค. - ์—ด์šฉ๋Ÿ‰์€(๋Š”) ๋ฌด์Šจ ๋œป์ธ๊ฐ€์š”? - ์—ด์šฉ๋Ÿ‰์ด ์Œ์ˆ˜์ผ ์ˆ˜ ์žˆ์Šต๋‹ˆ๊นŒ? - ์—ด์šฉ๋Ÿ‰์€ ๋ฌด์—‡์„ ์ธก์ •ํ•ฉ๋‹ˆ๊นŒ? - ์—ด์šฉ๋Ÿ‰์€(๋Š”) ๋ฌด์—‡์— ์‚ฌ์šฉ๋ฉ๋‹ˆ๊นŒ? - ์—ด์šฉ๋Ÿ‰ ๋ฌผ์งˆ์„ ์‹๋ณ„ํ•˜๋Š” ๋ฐ ์‚ฌ์šฉํ•  ์ˆ˜ ์žˆ์Šต๋‹ˆ๊นŒ? - ๋น„์—ด ๊ธฐํ˜ธ - ๋น„์—ด ๋Œ€ ์—ด์šฉ๋Ÿ‰ - ๋น„์—ด ๋Œ€ ์ž ์—ด - ๋น„์—ด ๋Œ€ ์—ด์ „๋„์œจ - ์—ด์šฉ๋Ÿ‰์€(๋Š”) ์˜จ๋„์™€ ์–ด๋–ค ๊ด€๋ จ์ด ์žˆ์Šต๋‹ˆ๊นŒ? - ์—ด์šฉ๋Ÿ‰ ๋น„์œจ์ด๋ž€ - ์—ด์šฉ๋Ÿ‰ ๋น„์œจ ๊ณ„์‚ฐ ๋ฐฉ๋ฒ• - ์—ด์šฉ๋Ÿ‰ ์šฉ๋Ÿ‰์„ ์–ด๋–ป๊ฒŒ ๊ณ„์‚ฐํ•ฉ๋‹ˆ๊นŒ? - ์—ด์šฉ๋Ÿ‰์„ ๊ฒฐ์ •ํ•˜๋Š” ๋ฐฉ๋ฒ• - ๋น„์—ด ๋ฐฉ์ •์‹ - ์ผ์ •ํ•œ ์••๋ ฅ์—์„œ ์—ด์šฉ๋Ÿ‰๋ฅผ ๊ณ„์‚ฐํ•˜๋Š” ๋ฐฉ๋ฒ• - ์—ด๋Ÿ‰๊ณ„๋ฅผ ์‚ฌ์šฉํ•˜์—ฌ ์—ด์šฉ๋Ÿ‰์„ ์ฐพ๋Š” ๋ฐฉ๋ฒ• - ์—ด์šฉ๋Ÿ‰์œผ๋กœ ์ตœ์ข… ์˜จ๋„๋ฅผ ์ฐพ๋Š” ๋ฐฉ๋ฒ• - ์–ด๋–ค ๋ฌผ์งˆ์ด ๊ฐ€์žฅ ๋†’์€ ์—ด์šฉ๋Ÿ‰ - ๋น„์—ด ๋‹จ์œ„ - ๋ชฐ ์—ด์šฉ๋Ÿ‰์„ ์—ด์šฉ๋Ÿ‰๋กœ ๋ณ€ํ™˜ํ•˜๋Š” ๋ฐฉ๋ฒ• ## ์—ด์šฉ๋Ÿ‰ ์Œ์ˆ˜์ผ ์ˆ˜ ์žˆ์Šต๋‹ˆ๊นŒ? **์—ด์šฉ๋Ÿ‰์ด ์Œ์ˆ˜์ผ ์ˆ˜ ์žˆ๋‹ค๋Š” ๊ฒƒ์€ ์ผ๋ฐ˜์ ์ธ ์˜คํ•ด์ž…๋‹ˆ๋‹ค. ๊ฐ’์ด ์–‘์ˆ˜์ด๊ฑฐ๋‚˜ 0์ผ ์ˆ˜๋„ ์žˆ์ง€๋งŒ ๊ฒฐ์ฝ” ์Œ์ˆ˜์ผ ์ˆ˜๋Š” ์—†์Šต๋‹ˆ๋‹ค.** ์˜คํ•ด๋Š” ์• ์ดˆ์— ์—ด์šฉ๋Ÿ‰์ด ๋ฌด์—‡์ธ์ง€ ์ดํ•ดํ•˜์ง€ ๋ชปํ•˜๋Š” ๋ฐ์„œ ์˜ต๋‹ˆ๋‹ค. ๋น„์—ด์€ ๋ฌผ์งˆ 1g์„ ์„ญ์”จ 1๋„ ์˜ฌ๋ฆฌ๋Š” ๋ฐ ํ•„์š”ํ•œ ์—๋„ˆ์ง€๋ฅผ ๋‚˜ํƒ€๋ƒ…๋‹ˆ๋‹ค. ## ์—ด์šฉ๋Ÿ‰์€(๋Š”) ๋ฌด์—‡์— ์‚ฌ์šฉ๋ฉ๋‹ˆ๊นŒ? ๋น„์—ด์€ ํŠน์ • ๋ฌผ์งˆ์˜ ์ฃผ์–ด์ง„ ์งˆ๋Ÿ‰์˜ ์˜จ๋„๋ฅผ ์ผ์ •๋Ÿ‰ ์ฆ๊ฐ€์‹œํ‚ค๋Š” ๋ฐ ํ•„์š”ํ•œ ์—ด ์—๋„ˆ์ง€์˜ ์–‘์„ ๋‚˜ํƒ€๋‚ด๋Š” ์—ด์—ญํ•™ ๋ฐ ์—ด๋Ÿ‰๊ณ„์—์„œ ์‚ฌ์šฉ๋˜๋Š” ์ธก์ •์ž…๋‹ˆ๋‹ค. ## ์—ด์šฉ๋Ÿ‰ ๋ฌผ์งˆ์„ ์‹๋ณ„ํ•˜๋Š” ๋ฐ ์‚ฌ์šฉํ•  ์ˆ˜ ์žˆ์Œ ๋น„์—ด์€ ์กด์žฌํ•˜๋Š” ๋ฌผ์งˆ์˜ ์–‘์— ์˜์กดํ•˜์ง€ ์•Š๋Š” ์ง‘์ค‘์ ์ธ ํŠน์„ฑ(๋ฐ€๋„, ์ƒ‰์ƒ ๋“ฑ)์ž…๋‹ˆ๋‹ค. ์˜ˆ, ์ด๊ฒƒ์€ ์—ด์šฉ๋Ÿ‰์„ ์‚ฌ์šฉํ•˜์—ฌ ๋ฌผ์งˆ์„ ์‹๋ณ„ํ•  ์ˆ˜ ์žˆ๋„๋ก ํ•ฉ๋‹ˆ๋‹ค. ## ๋น„์—ด ๊ธฐํ˜ธ **CP** ## ๋น„์—ด ๋Œ€ ์—ด์šฉ๋Ÿ‰ ๋น„์—ด์€ ๋ฌผ์งˆ์˜ ๋‹จ์œ„ ์งˆ๋Ÿ‰์ด ์˜จ๋„๋ฅผ 1โ„ƒ ๋˜๋Š” 1k ์˜ฌ๋ฆฌ๋Š”๋ฐ ํ•„์š”ํ•œ ์—ด์—๋„ˆ์ง€์˜ ์–‘์ž…๋‹ˆ๋‹ค. ๋ฐ˜๋ฉด์— ์—ด์šฉ๋Ÿ‰์€ ๋ฌผ์งˆ์ด ์˜จ๋„๋ฅผ 1โ„ƒ ๋˜๋Š” 1K ์˜ฌ๋ฆฌ๋Š” ๋ฐ ํ•„์š”ํ•œ ์—ด์—๋„ˆ์ง€์˜ ์–‘์ž…๋‹ˆ๋‹ค. ## ๋น„์—ด ๋Œ€ ์ž ์—ด ์ž ์—ด์€ ๋ฌผ์งˆ์ด ์ƒ ๋ณ€ํ™”๋ฅผ ๊ฒช์„ ๋•Œ ํก์ˆ˜๋˜๊ฑฐ๋‚˜ ๋ฐฉ์ถœ๋˜๋Š” ์—๋„ˆ์ง€์ž…๋‹ˆ๋‹ค. ๋น„์—ด์€ ์ผ์ •ํ•œ ์••๋ ฅ์—์„œ ๋ฌผ์งˆ 1g์˜ ์˜จ๋„๋ฅผ ์„ญ์”จ 1๋„(๋˜๋Š” 1์ผˆ๋นˆ) ๋†’์ด๋Š” ๋ฐ ํ•„์š”ํ•œ ์—ด๋Ÿ‰์ž…๋‹ˆ๋‹ค. ## ๋น„์—ด ๋Œ€ ์—ด์ „๋„์œจ ์—ด์ „๋„์œจ์€ ์—ด์„ ์ „๋‹ฌํ•˜๋Š” ๋Šฅ๋ ฅ์ด๊ณ  ์—ด์šฉ๋Ÿ‰๋Š” ํŠน์ • ์–‘์˜ ์—ด์„ ๋ณด์œ ํ•˜๋Š” ๋Šฅ๋ ฅ์ž…๋‹ˆ๋‹ค. ## ์—ด์šฉ๋Ÿ‰์€(๋Š”) ์˜จ๋„์™€ ์–ด๋–ค ๊ด€๋ จ์ด ์žˆ์Šต๋‹ˆ๊นŒ? ์ด ์—ด์šฉ๋Ÿ‰๊ณผ ๋‹ฌ๋ฆฌ ์—ด์šฉ๋Ÿ‰ ์šฉ๋Ÿ‰์€ ์งˆ๋Ÿ‰์ด๋‚˜ ๋ถ€ํ”ผ์™€ ๋ฌด๊ด€ํ•ฉ๋‹ˆ๋‹ค. ๊ทธ๊ฒƒ์€ ์ฃผ์–ด์ง„ ๋ฌผ์งˆ์˜ ์˜จ๋„๋ฅผ ์„ญ์”จ 1๋„ ์˜ฌ๋ฆฌ๊ธฐ ์œ„ํ•ด ์ฃผ์–ด์ง„ ๋ฌผ์งˆ์˜ ๋‹จ์œ„ ์งˆ๋Ÿ‰์— ์–ผ๋งˆ๋‚˜ ๋งŽ์€ ์—ด์„ ๊ฐ€ํ•ด์•ผ ํ•˜๋Š”์ง€๋ฅผ ์„ค๋ช…ํ•ฉ๋‹ˆ๋‹ค. ์—ด์šฉ๋Ÿ‰๊ณผ ์—ด์šฉ๋Ÿ‰๋Š” C=cm ๋˜๋Š” c=C/m๋กœ ๊ด€๋ จ๋ฉ๋‹ˆ๋‹ค. ## ์—ด์šฉ๋Ÿ‰ ๋น„์œจ ๊ณ„์‚ฐ ๋ฐฉ๋ฒ• **K = cp / cv.** ์—ด์šฉ๋Ÿ‰์˜ ๋น„์œจ์€ ๋‹ค์Œ๊ณผ ๊ฐ™์ด ํ‘œํ˜„ํ•  ์ˆ˜ ์žˆ์Šต๋‹ˆ๋‹ค. K = cp / cv ์—ด์šฉ๋Ÿ‰s ฮณ = CP/CV์˜ ๋น„์œจ์€ ๋‹จ์—ด ์—”์ง„ ํ”„๋กœ์„ธ์Šค์™€ ๊ฐ€์Šค์—์„œ ์Œ์†์„ ๊ฒฐ์ •ํ•˜๋Š” ์š”์ธ์ž…๋‹ˆ๋‹ค. ## ๋น„์—ด ๋ฐฉ์ •์‹ **Cv = Q / (ฮ”T โจ‰ m) .** ์—ด์šฉ๋Ÿ‰ ์šฉ๋Ÿ‰์€ ์ผ์ •ํ•œ ๋ถ€ํ”ผ์˜ ๋ฌผ์งˆ 1๋‹จ์œ„ ์งˆ๋Ÿ‰์„ 1ยฐC๋งŒํผ ๋ณ€ํ™”์‹œํ‚ค๋Š” ๋ฐ ํ•„์š”ํ•œ ์—ด ๋˜๋Š” ์—๋„ˆ์ง€์ž…๋‹ˆ๋‹ค. ๊ณต์‹์€ Cv = Q / (ฮ”T โจ‰ m) ์ž…๋‹ˆ๋‹ค. ## ์—ด์šฉ๋Ÿ‰์œผ๋กœ ์ตœ์ข… ์˜จ๋„๋ฅผ ์ฐพ๋Š” ๋ฐฉ๋ฒ• ๋น„์—ด ๋ฐฉ์ •์‹ Q=mcฮ”T๋ฅผ ๋‹ค์‹œ ์ž‘์„ฑํ•ฉ๋‹ˆ๋‹ค. ๋ฌธ์ž "Q"๋Š” ์นผ๋กœ๋ฆฌ ๊ตํ™˜์œผ๋กœ ์ „๋‹ฌ๋œ ์—ด, "m"์€ ๊ฐ€์—ด๋˜๋Š” ๋ฌผ์งˆ์˜ ์งˆ๋Ÿ‰(g), "c"๋Š” ์—ด์šฉ๋Ÿ‰ ์šฉ๋Ÿ‰ ๋ฐ ์ •์  ๊ฐ’, "ฮ”T"๋Š” ๋ณ€ํ™”๋Ÿ‰์ž…๋‹ˆ๋‹ค. ์˜จ๋„ ๋ณ€ํ™”๋ฅผ ๋ฐ˜์˜ํ•˜๊ธฐ ์œ„ํ•ด ์„ญ์”จ ์˜จ๋„๋กœ ํ‘œ์‹œํ•ฉ๋‹ˆ๋‹ค. ## ์–ด๋–ค ๋ฌผ์งˆ์ด ๊ฐ€์žฅ ๋†’์€๊ฐ€ ์—ด์šฉ๋Ÿ‰ **๋ฌผ.** ๋ฌผ์˜ ๋น„์—ด์€ ๋‹ค๋ฅธ ์–ด๋–ค ๋ฌผ์งˆ์ด๋‚˜ ๋งค์งˆ๋ณด๋‹ค ๋†’์Šต๋‹ˆ๋‹ค. ๋ฌผ์€ ๋ชจ๋“  ๋ฌผ์งˆ์˜ ์˜จ๋„๋ฅผ ์กฐ์ ˆํ•˜๋Š” ๋ฐ ์ค‘์š”ํ•œ ์—ญํ• ์„ ํ•ฉ๋‹ˆ๋‹ค. ## ๋น„์—ด ๋‹จ์œ„ ์—ด์šฉ๋Ÿ‰์˜ SI ๋‹จ์œ„๋Š” ์ค„๋‹น ์ผˆ๋นˆ ๋ฐ ํ‚ฌ๋กœ๊ทธ๋žจ, J/(K kg)์ž…๋‹ˆ๋‹ค. cal/gยบC์ผ ์ˆ˜๋„ ์žˆ์Šต๋‹ˆ๋‹ค. ## ๋ชฐ ์—ด์šฉ๋Ÿ‰์„ ์—ด์šฉ๋Ÿ‰์œผ๋กœ ๋ณ€ํ™˜ํ•˜๋Š” ๋ฐฉ๋ฒ• ๋ชฐ ์—ด์šฉ๋Ÿ‰์œผ๋กœ ๋ณ€ํ™˜ํ•˜๋ ค๋ฉด ๋ชฐ ์—ด์šฉ๋Ÿ‰ ๊ณต์‹์„ ์‚ฌ์šฉํ•  ์ˆ˜ ์žˆ์Šต๋‹ˆ๋‹ค. ์—ด์šฉ๋Ÿ‰์— ๋ฉ”ํƒ„์˜ ๋ชฐ ์งˆ๋Ÿ‰์„ ๊ณฑํ•ฉ๋‹ˆ๋‹ค. ## ๋น„๋””์˜ค: ์—ด์šฉ๋Ÿ‰, ์—ด์šฉ๋Ÿ‰ ๋ฐ... ์ด์ œ "์—ด์šฉ๋Ÿ‰, ์—ด์šฉ๋Ÿ‰, ๊ทธ๋ฆฌ๊ณ ..."๋ผ๋Š” ๊ด€๋ จ ๋น„๋””์˜ค๋ฅผ ๋ณด์—ฌ๋“œ๋ฆฌ๊ณ  ์‹ถ์Šต๋‹ˆ๋‹ค. ํŒ: ํ•„์š”ํ•œ ๊ฒฝ์šฐ ์บก์…˜ ๋ฒ„ํŠผ์„ ์ผœ์‹ญ์‹œ์˜ค. ์˜์–ด์— ์ต์ˆ™ํ•˜์ง€ ์•Š์€ ๊ฒฝ์šฐ ์„ค์ • ๋ฒ„ํŠผ์—์„œ "์ž๋™ ๋ฒˆ์—ญ"์„ ์„ ํƒํ•˜์‹ญ์‹œ์˜ค. ## ์ธ์šฉ ๊ณผ์ œ ๋‚˜ ์—์„ธ์ด์— ์‚ฌ์‹ค์ด๋‚˜ ์ •๋ณด๋ฅผ ํฌํ•จํ•ด์•ผ ํ•  ๋•Œ ํ•ด๋‹น ์ •๋ณด๋ฅผ ์–ด๋””์„œ ์–ด๋–ป๊ฒŒ ์ฐพ์•˜๋Š”์ง€ ํฌํ•จํ•ด์•ผ ํ•ฉ๋‹ˆ๋‹ค (์—ด์šฉ๋Ÿ‰). ๊ทธ๊ฒƒ์€ ๋‹น์‹ ์˜ ๋…ผ๋ฌธ์— ์‹ ๋ขฐ์„ฑ์„ ์ œ๊ณตํ•˜๊ณ  ๋•Œ๋กœ๋Š” ๊ณ ๋“ฑ ๊ต์œก์—์„œ ํ•„์š”ํ•ฉ๋‹ˆ๋‹ค. ๋‹น์‹ ์˜ ์ธ์ƒ์„ ์‰ฝ๊ฒŒ (๋ฐ ์ธ์šฉ) ์‰ฝ๊ฒŒํ•˜๊ธฐ ์œ„ํ•ด ๊ทธ๋ƒฅ ๋ณต์‚ฌํ•˜๊ณ  ๊ณผ์ œ ๋˜๋Š” ์—์„ธ์ด์— ์•„๋ž˜์˜ ์ •๋ณด๋ฅผ ๋ถ™์—ฌ : Luz, Gelson. ์—ด์šฉ๋Ÿ‰. ๋ฌผ์ž ๋ธ”๋กœ๊ทธ. 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[![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiKTmL-6p4ptHqi6fV2Mi1zvVp5PQ8yrub-R257AeXjZhTLo__sr7MItWOV-OXpS55Hyb5X7dNrGaTqFW-BAkG0DIRvd3LkEa_8FqMIlileqYZB9YAWb-huUI_VZnyr4e6hrWkAl-obXVo/s320/%25EC%2597%25B4%25EC%259A%25A9%25EB%259F%2589.webp)](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiKTmL-6p4ptHqi6fV2Mi1zvVp5PQ8yrub-R257AeXjZhTLo__sr7MItWOV-OXpS55Hyb5X7dNrGaTqFW-BAkG0DIRvd3LkEa_8FqMIlileqYZB9YAWb-huUI_VZnyr4e6hrWkAl-obXVo/s780/%25EC%2597%25B4%25EC%259A%25A9%25EB%259F%2589.webp) **์—ด์šฉ๋Ÿ‰** ์€ ์ˆ˜์‹ ๋œ ์—ด ๋ฐ ์—ด ๋ณ€ํ™”์™€ ๊ด€๋ จ๋œ ๋ฌผ๋ฆฌ์  ์›…์žฅํ•จ์ž…๋‹ˆ๋‹ค. ๊ทธ๊ฒƒ์€ ์šฐ๋ฆฌ์—๊ฒŒ ์›์†Œ ๋˜๋Š” ๋ฌผ์งˆ์˜ ๊ฐ 1g์— ๋Œ€ํ•ด 1 ยฐ C์˜ ์˜จ๋„๋ฅผ ์ฆ๊ฐ€ (๋˜๋Š” ๊ฐ์†Œ)ํ•˜๋Š” ๋ฐ ํ•„์š”ํ•œ ์—ด์˜ ์–‘์„ ์•Œ๋ ค์ค๋‹ˆ๋‹ค. ์ฆ‰, ๋ฌผ์งˆ์˜ ์—ด์šฉ๋Ÿ‰๊ฐ€ ๋†’์„์ˆ˜๋ก ์˜จ๋„ ๋ณ€ํ™”๊ฐ€ ๋ฐœ์ƒํ•˜๊ธฐ ์œ„ํ•ด ๊ณต๊ธ‰(๋˜๋Š” ์ œ๊ฑฐ)ํ•ด์•ผ ํ•˜๋Š” ์—ด์˜ ์–‘์ด ํด ์ˆ˜ ์žˆ์Šต๋‹ˆ๋‹ค. ## ํฌ๋ฎฌ๋Ÿฌ ์šฐ๋ฆฌ๋Š” ๋ฌผ์งˆ์˜ ์—ด์šฉ๋Ÿ‰๋ฅผ ๊ณ„์‚ฐํ•˜๊ธฐ ์œ„ํ•ด ๋‹ค์Œ๊ณผ ๊ฐ™์€ ๊ณต์‹์„ ์‚ฌ์šฉํ•ฉ๋‹ˆ๋‹ค : c = Q/(m.ฮ”ฮธ), c = C/m (์ผ๋ฐ˜์ ์œผ๋กœ ์ด ์ˆ˜์‹์€ Q=m.c.ฮ”ฮธ๋กœ ํ‘œ์‹œ๋ฉ๋‹ˆ๋‹ค. ์กด์žฌ: - c: ์—ด์šฉ๋Ÿ‰ (cal/gยฐC ๋˜๋Š” J/Kg.K) - Q: ์—ด๋Ÿ‰(๋ผ์ž„ ๋˜๋Š” J) - m: ์งˆ๋Ÿ‰(g ๋˜๋Š” Kg) - ฮ”ฮธ: ์˜จ๋„ ๋ณ€ํ™”(ยฐC ๋˜๋Š” K) - C: ์—ด ์šฉ๋Ÿ‰(cal/ยฐC ๋˜๋Š” J/K) ## ์œ ๋‹› ### ๊ตญ์ œ ์‹œ์Šคํ…œ(SI) ์—ด์šฉ๋Ÿ‰๋Š” J/Kg.K(ํ‚ฌ๋กœ๊ทธ๋žจ๋‹น ์ค„๊ณผ ์ผˆ๋นˆ)๋กœ ์ธก์ •๋ฉ๋‹ˆ๋‹ค. ### ๊ธฐ์กด cal/g.ยฐC ๋‹จ์œ„(๊ทธ๋žจ๋‹น ์นผ๋กœ๋ฆฌ๋ฐ ์„ญ์”จ ์ •๋„)๋Š” ์—ฌ์ „ํžˆ ๋งค์šฐ ์ผ๋ฐ˜์ ์ž…๋‹ˆ๋‹ค. ## ์—ด์šฉ๋Ÿ‰ ๋ชฐ์–ด (kg) ๋˜๋Š” (g)์—์„œ ๋ฌผ์งˆ์„ ์ •์˜ํ•˜๋Š” ๋Œ€์‹ , ์šฐ๋ฆฌ๋Š” ์›์ž ๋˜๋Š” ๋ถ„์ž์˜ "mol" ๋˜๋Š” ์ˆ˜๋ฅผ ์‚ฌ์šฉํ•ฉ๋‹ˆ๋‹ค. ## ์—ด ์šฉ๋Ÿ‰ ์—ด ์šฉ๋Ÿ‰์€ ์ฒด๋‚ด์— ์กด์žฌํ•˜๋Š” ์—ด์˜ ์–‘์œผ๋กœ, ๊ทธ๊ฒƒ์— ์˜ํ•ด ๊ณ ํ†ต๋ฐ›๋Š” ์˜จ๋„ ๋ณ€ํ™”์™€ ๊ด€๋ จํ•˜์—ฌ. ๋‹ค์Œ ์ˆ˜์‹: ์œผ๋กœ ๊ณ„์‚ฐํ•  ์ˆ˜ ์žˆ์Šต๋‹ˆ๋‹ค. C = Q/ฮ”ฮธ C = m.c ์–ด๋””, - C: ์—ด ์šฉ๋Ÿ‰(cal/ยฐC ๋˜๋Š” J/K) - Q: ์—ด๋Ÿ‰(๋ผ์ž„ ๋˜๋Š” J) - ฮ”ฮธ: ์˜จ๋„ ๋ณ€ํ™”(ยฐC ๋˜๋Š” K) - m: ์งˆ๋Ÿ‰(g ๋˜๋Š” Kg) - c: ์—ด์šฉ๋Ÿ‰ (cal/gยฐC ๋˜๋Š” J/KgK) ## ์œ„ํ‚คํ”ผ๋””์•„์— ๋”ฐ๋ฅด๋ฉดโ€ฆ ์—ด์—ญํ•™์—์„œ ๋ฌผ์งˆ์˜ ์—ด์šฉ๋Ÿ‰ ์šฉ๋Ÿ‰(๊ธฐํ˜ธ cp)์€ ๋ฌผ์งˆ ์‹œ๋ฃŒ์˜ ์—ด์šฉ๋Ÿ‰์„ ์‹œ๋ฃŒ์˜ ์งˆ๋Ÿ‰์œผ๋กœ ๋‚˜๋ˆˆ ๊ฐ’์ž…๋‹ˆ๋‹ค. ๋น„๊ณต์‹์ ์œผ๋กœ, ์˜จ๋„๋ฅผ ํ•œ ๋‹จ์œ„ ์ฆ๊ฐ€์‹œํ‚ค๊ธฐ ์œ„ํ•ด ๋ฌผ์งˆ์˜ ํ•œ ๋‹จ์œ„ ์งˆ๋Ÿ‰์— ์ถ”๊ฐ€ํ•ด์•ผ ํ•˜๋Š” ์—ด์˜ ์–‘์ž…๋‹ˆ๋‹ค. ## ๋ชฉ์ฐจ ์ด์ œ ๋‹ค์Œ์— ๋Œ€ํ•ด ์ด์•ผ๊ธฐํ•  ์‹œ๊ฐ„์ž…๋‹ˆ๋‹ค. - ์—ด์šฉ๋Ÿ‰์€(๋Š”) ๋ฌด์Šจ ๋œป์ธ๊ฐ€์š”? - ์—ด์šฉ๋Ÿ‰์ด ์Œ์ˆ˜์ผ ์ˆ˜ ์žˆ์Šต๋‹ˆ๊นŒ? - ์—ด์šฉ๋Ÿ‰์€ ๋ฌด์—‡์„ ์ธก์ •ํ•ฉ๋‹ˆ๊นŒ? - ์—ด์šฉ๋Ÿ‰์€(๋Š”) ๋ฌด์—‡์— ์‚ฌ์šฉ๋ฉ๋‹ˆ๊นŒ? - ์—ด์šฉ๋Ÿ‰ ๋ฌผ์งˆ์„ ์‹๋ณ„ํ•˜๋Š” ๋ฐ ์‚ฌ์šฉํ•  ์ˆ˜ ์žˆ์Šต๋‹ˆ๊นŒ? - ๋น„์—ด ๊ธฐํ˜ธ - ๋น„์—ด ๋Œ€ ์—ด์šฉ๋Ÿ‰ - ๋น„์—ด ๋Œ€ ์ž ์—ด - ๋น„์—ด ๋Œ€ ์—ด์ „๋„์œจ - ์—ด์šฉ๋Ÿ‰์€(๋Š”) ์˜จ๋„์™€ ์–ด๋–ค ๊ด€๋ จ์ด ์žˆ์Šต๋‹ˆ๊นŒ? - ์—ด์šฉ๋Ÿ‰ ๋น„์œจ์ด๋ž€ - ์—ด์šฉ๋Ÿ‰ ๋น„์œจ ๊ณ„์‚ฐ ๋ฐฉ๋ฒ• - ์—ด์šฉ๋Ÿ‰ ์šฉ๋Ÿ‰์„ ์–ด๋–ป๊ฒŒ ๊ณ„์‚ฐํ•ฉ๋‹ˆ๊นŒ? - ์—ด์šฉ๋Ÿ‰์„ ๊ฒฐ์ •ํ•˜๋Š” ๋ฐฉ๋ฒ• - ๋น„์—ด ๋ฐฉ์ •์‹ - ์ผ์ •ํ•œ ์••๋ ฅ์—์„œ ์—ด์šฉ๋Ÿ‰๋ฅผ ๊ณ„์‚ฐํ•˜๋Š” ๋ฐฉ๋ฒ• - ์—ด๋Ÿ‰๊ณ„๋ฅผ ์‚ฌ์šฉํ•˜์—ฌ ์—ด์šฉ๋Ÿ‰์„ ์ฐพ๋Š” ๋ฐฉ๋ฒ• - ์—ด์šฉ๋Ÿ‰์œผ๋กœ ์ตœ์ข… ์˜จ๋„๋ฅผ ์ฐพ๋Š” ๋ฐฉ๋ฒ• - ์–ด๋–ค ๋ฌผ์งˆ์ด ๊ฐ€์žฅ ๋†’์€ ์—ด์šฉ๋Ÿ‰ - ๋น„์—ด ๋‹จ์œ„ - ๋ชฐ ์—ด์šฉ๋Ÿ‰์„ ์—ด์šฉ๋Ÿ‰๋กœ ๋ณ€ํ™˜ํ•˜๋Š” ๋ฐฉ๋ฒ• ## ์—ด์šฉ๋Ÿ‰ ์Œ์ˆ˜์ผ ์ˆ˜ ์žˆ์Šต๋‹ˆ๊นŒ? **์—ด์šฉ๋Ÿ‰์ด ์Œ์ˆ˜์ผ ์ˆ˜ ์žˆ๋‹ค๋Š” ๊ฒƒ์€ ์ผ๋ฐ˜์ ์ธ ์˜คํ•ด์ž…๋‹ˆ๋‹ค. ๊ฐ’์ด ์–‘์ˆ˜์ด๊ฑฐ๋‚˜ 0์ผ ์ˆ˜๋„ ์žˆ์ง€๋งŒ ๊ฒฐ์ฝ” ์Œ์ˆ˜์ผ ์ˆ˜๋Š” ์—†์Šต๋‹ˆ๋‹ค.** ์˜คํ•ด๋Š” ์• ์ดˆ์— ์—ด์šฉ๋Ÿ‰์ด ๋ฌด์—‡์ธ์ง€ ์ดํ•ดํ•˜์ง€ ๋ชปํ•˜๋Š” ๋ฐ์„œ ์˜ต๋‹ˆ๋‹ค. ๋น„์—ด์€ ๋ฌผ์งˆ 1g์„ ์„ญ์”จ 1๋„ ์˜ฌ๋ฆฌ๋Š” ๋ฐ ํ•„์š”ํ•œ ์—๋„ˆ์ง€๋ฅผ ๋‚˜ํƒ€๋ƒ…๋‹ˆ๋‹ค. ## ์—ด์šฉ๋Ÿ‰์€(๋Š”) ๋ฌด์—‡์— ์‚ฌ์šฉ๋ฉ๋‹ˆ๊นŒ? ๋น„์—ด์€ ํŠน์ • ๋ฌผ์งˆ์˜ ์ฃผ์–ด์ง„ ์งˆ๋Ÿ‰์˜ ์˜จ๋„๋ฅผ ์ผ์ •๋Ÿ‰ ์ฆ๊ฐ€์‹œํ‚ค๋Š” ๋ฐ ํ•„์š”ํ•œ ์—ด ์—๋„ˆ์ง€์˜ ์–‘์„ ๋‚˜ํƒ€๋‚ด๋Š” ์—ด์—ญํ•™ ๋ฐ ์—ด๋Ÿ‰๊ณ„์—์„œ ์‚ฌ์šฉ๋˜๋Š” ์ธก์ •์ž…๋‹ˆ๋‹ค. ## ์—ด์šฉ๋Ÿ‰ ๋ฌผ์งˆ์„ ์‹๋ณ„ํ•˜๋Š” ๋ฐ ์‚ฌ์šฉํ•  ์ˆ˜ ์žˆ์Œ ๋น„์—ด์€ ์กด์žฌํ•˜๋Š” ๋ฌผ์งˆ์˜ ์–‘์— ์˜์กดํ•˜์ง€ ์•Š๋Š” ์ง‘์ค‘์ ์ธ ํŠน์„ฑ(๋ฐ€๋„, ์ƒ‰์ƒ ๋“ฑ)์ž…๋‹ˆ๋‹ค. ์˜ˆ, ์ด๊ฒƒ์€ ์—ด์šฉ๋Ÿ‰์„ ์‚ฌ์šฉํ•˜์—ฌ ๋ฌผ์งˆ์„ ์‹๋ณ„ํ•  ์ˆ˜ ์žˆ๋„๋ก ํ•ฉ๋‹ˆ๋‹ค. ## ๋น„์—ด ๊ธฐํ˜ธ **CP** ## ๋น„์—ด ๋Œ€ ์—ด์šฉ๋Ÿ‰ ๋น„์—ด์€ ๋ฌผ์งˆ์˜ ๋‹จ์œ„ ์งˆ๋Ÿ‰์ด ์˜จ๋„๋ฅผ 1โ„ƒ ๋˜๋Š” 1k ์˜ฌ๋ฆฌ๋Š”๋ฐ ํ•„์š”ํ•œ ์—ด์—๋„ˆ์ง€์˜ ์–‘์ž…๋‹ˆ๋‹ค. ๋ฐ˜๋ฉด์— ์—ด์šฉ๋Ÿ‰์€ ๋ฌผ์งˆ์ด ์˜จ๋„๋ฅผ 1โ„ƒ ๋˜๋Š” 1K ์˜ฌ๋ฆฌ๋Š” ๋ฐ ํ•„์š”ํ•œ ์—ด์—๋„ˆ์ง€์˜ ์–‘์ž…๋‹ˆ๋‹ค. ## ๋น„์—ด ๋Œ€ ์ž ์—ด ์ž ์—ด์€ ๋ฌผ์งˆ์ด ์ƒ ๋ณ€ํ™”๋ฅผ ๊ฒช์„ ๋•Œ ํก์ˆ˜๋˜๊ฑฐ๋‚˜ ๋ฐฉ์ถœ๋˜๋Š” ์—๋„ˆ์ง€์ž…๋‹ˆ๋‹ค. ๋น„์—ด์€ ์ผ์ •ํ•œ ์••๋ ฅ์—์„œ ๋ฌผ์งˆ 1g์˜ ์˜จ๋„๋ฅผ ์„ญ์”จ 1๋„(๋˜๋Š” 1์ผˆ๋นˆ) ๋†’์ด๋Š” ๋ฐ ํ•„์š”ํ•œ ์—ด๋Ÿ‰์ž…๋‹ˆ๋‹ค. ## ๋น„์—ด ๋Œ€ ์—ด์ „๋„์œจ ์—ด์ „๋„์œจ์€ ์—ด์„ ์ „๋‹ฌํ•˜๋Š” ๋Šฅ๋ ฅ์ด๊ณ  ์—ด์šฉ๋Ÿ‰๋Š” ํŠน์ • ์–‘์˜ ์—ด์„ ๋ณด์œ ํ•˜๋Š” ๋Šฅ๋ ฅ์ž…๋‹ˆ๋‹ค. ## ์—ด์šฉ๋Ÿ‰์€(๋Š”) ์˜จ๋„์™€ ์–ด๋–ค ๊ด€๋ จ์ด ์žˆ์Šต๋‹ˆ๊นŒ? ์ด ์—ด์šฉ๋Ÿ‰๊ณผ ๋‹ฌ๋ฆฌ ์—ด์šฉ๋Ÿ‰ ์šฉ๋Ÿ‰์€ ์งˆ๋Ÿ‰์ด๋‚˜ ๋ถ€ํ”ผ์™€ ๋ฌด๊ด€ํ•ฉ๋‹ˆ๋‹ค. ๊ทธ๊ฒƒ์€ ์ฃผ์–ด์ง„ ๋ฌผ์งˆ์˜ ์˜จ๋„๋ฅผ ์„ญ์”จ 1๋„ ์˜ฌ๋ฆฌ๊ธฐ ์œ„ํ•ด ์ฃผ์–ด์ง„ ๋ฌผ์งˆ์˜ ๋‹จ์œ„ ์งˆ๋Ÿ‰์— ์–ผ๋งˆ๋‚˜ ๋งŽ์€ ์—ด์„ ๊ฐ€ํ•ด์•ผ ํ•˜๋Š”์ง€๋ฅผ ์„ค๋ช…ํ•ฉ๋‹ˆ๋‹ค. ์—ด์šฉ๋Ÿ‰๊ณผ ์—ด์šฉ๋Ÿ‰๋Š” C=cm ๋˜๋Š” c=C/m๋กœ ๊ด€๋ จ๋ฉ๋‹ˆ๋‹ค. ## ์—ด์šฉ๋Ÿ‰ ๋น„์œจ ๊ณ„์‚ฐ ๋ฐฉ๋ฒ• **K = cp / cv.** ์—ด์šฉ๋Ÿ‰์˜ ๋น„์œจ์€ ๋‹ค์Œ๊ณผ ๊ฐ™์ด ํ‘œํ˜„ํ•  ์ˆ˜ ์žˆ์Šต๋‹ˆ๋‹ค. K = cp / cv ์—ด์šฉ๋Ÿ‰s ฮณ = CP/CV์˜ ๋น„์œจ์€ ๋‹จ์—ด ์—”์ง„ ํ”„๋กœ์„ธ์Šค์™€ ๊ฐ€์Šค์—์„œ ์Œ์†์„ ๊ฒฐ์ •ํ•˜๋Š” ์š”์ธ์ž…๋‹ˆ๋‹ค. ## ๋น„์—ด ๋ฐฉ์ •์‹ **Cv = Q / (ฮ”T โจ‰ m) .** ์—ด์šฉ๋Ÿ‰ ์šฉ๋Ÿ‰์€ ์ผ์ •ํ•œ ๋ถ€ํ”ผ์˜ ๋ฌผ์งˆ 1๋‹จ์œ„ ์งˆ๋Ÿ‰์„ 1ยฐC๋งŒํผ ๋ณ€ํ™”์‹œํ‚ค๋Š” ๋ฐ ํ•„์š”ํ•œ ์—ด ๋˜๋Š” ์—๋„ˆ์ง€์ž…๋‹ˆ๋‹ค. ๊ณต์‹์€ Cv = Q / (ฮ”T โจ‰ m) ์ž…๋‹ˆ๋‹ค. ## ์—ด์šฉ๋Ÿ‰์œผ๋กœ ์ตœ์ข… ์˜จ๋„๋ฅผ ์ฐพ๋Š” ๋ฐฉ๋ฒ• ๋น„์—ด ๋ฐฉ์ •์‹ Q=mcฮ”T๋ฅผ ๋‹ค์‹œ ์ž‘์„ฑํ•ฉ๋‹ˆ๋‹ค. ๋ฌธ์ž "Q"๋Š” ์นผ๋กœ๋ฆฌ ๊ตํ™˜์œผ๋กœ ์ „๋‹ฌ๋œ ์—ด, "m"์€ ๊ฐ€์—ด๋˜๋Š” ๋ฌผ์งˆ์˜ ์งˆ๋Ÿ‰(g), "c"๋Š” ์—ด์šฉ๋Ÿ‰ ์šฉ๋Ÿ‰ ๋ฐ ์ •์  ๊ฐ’, "ฮ”T"๋Š” ๋ณ€ํ™”๋Ÿ‰์ž…๋‹ˆ๋‹ค. ์˜จ๋„ ๋ณ€ํ™”๋ฅผ ๋ฐ˜์˜ํ•˜๊ธฐ ์œ„ํ•ด ์„ญ์”จ ์˜จ๋„๋กœ ํ‘œ์‹œํ•ฉ๋‹ˆ๋‹ค. ## ์–ด๋–ค ๋ฌผ์งˆ์ด ๊ฐ€์žฅ ๋†’์€๊ฐ€ ์—ด์šฉ๋Ÿ‰ **๋ฌผ.** ๋ฌผ์˜ ๋น„์—ด์€ ๋‹ค๋ฅธ ์–ด๋–ค ๋ฌผ์งˆ์ด๋‚˜ ๋งค์งˆ๋ณด๋‹ค ๋†’์Šต๋‹ˆ๋‹ค. ๋ฌผ์€ ๋ชจ๋“  ๋ฌผ์งˆ์˜ ์˜จ๋„๋ฅผ ์กฐ์ ˆํ•˜๋Š” ๋ฐ ์ค‘์š”ํ•œ ์—ญํ• ์„ ํ•ฉ๋‹ˆ๋‹ค. ## ๋น„์—ด ๋‹จ์œ„ ์—ด์šฉ๋Ÿ‰์˜ SI ๋‹จ์œ„๋Š” ์ค„๋‹น ์ผˆ๋นˆ ๋ฐ ํ‚ฌ๋กœ๊ทธ๋žจ, J/(K kg)์ž…๋‹ˆ๋‹ค. cal/gยบC์ผ ์ˆ˜๋„ ์žˆ์Šต๋‹ˆ๋‹ค. ## ๋ชฐ ์—ด์šฉ๋Ÿ‰์„ ์—ด์šฉ๋Ÿ‰์œผ๋กœ ๋ณ€ํ™˜ํ•˜๋Š” ๋ฐฉ๋ฒ• ๋ชฐ ์—ด์šฉ๋Ÿ‰์œผ๋กœ ๋ณ€ํ™˜ํ•˜๋ ค๋ฉด ๋ชฐ ์—ด์šฉ๋Ÿ‰ ๊ณต์‹์„ ์‚ฌ์šฉํ•  ์ˆ˜ ์žˆ์Šต๋‹ˆ๋‹ค. ์—ด์šฉ๋Ÿ‰์— ๋ฉ”ํƒ„์˜ ๋ชฐ ์งˆ๋Ÿ‰์„ ๊ณฑํ•ฉ๋‹ˆ๋‹ค. ## ๋น„๋””์˜ค: ์—ด์šฉ๋Ÿ‰, ์—ด์šฉ๋Ÿ‰ ๋ฐ... ์ด์ œ "์—ด์šฉ๋Ÿ‰, ์—ด์šฉ๋Ÿ‰, ๊ทธ๋ฆฌ๊ณ ..."๋ผ๋Š” ๊ด€๋ จ ๋น„๋””์˜ค๋ฅผ ๋ณด์—ฌ๋“œ๋ฆฌ๊ณ  ์‹ถ์Šต๋‹ˆ๋‹ค. ํŒ: ํ•„์š”ํ•œ ๊ฒฝ์šฐ ์บก์…˜ ๋ฒ„ํŠผ์„ ์ผœ์‹ญ์‹œ์˜ค. ์˜์–ด์— ์ต์ˆ™ํ•˜์ง€ ์•Š์€ ๊ฒฝ์šฐ ์„ค์ • ๋ฒ„ํŠผ์—์„œ "์ž๋™ ๋ฒˆ์—ญ"์„ ์„ ํƒํ•˜์‹ญ์‹œ์˜ค. ## ์ธ์šฉ ๊ณผ์ œ ๋‚˜ ์—์„ธ์ด์— ์‚ฌ์‹ค์ด๋‚˜ ์ •๋ณด๋ฅผ ํฌํ•จํ•ด์•ผ ํ•  ๋•Œ ํ•ด๋‹น ์ •๋ณด๋ฅผ ์–ด๋””์„œ ์–ด๋–ป๊ฒŒ ์ฐพ์•˜๋Š”์ง€ ํฌํ•จํ•ด์•ผ ํ•ฉ๋‹ˆ๋‹ค (์—ด์šฉ๋Ÿ‰). ๊ทธ๊ฒƒ์€ ๋‹น์‹ ์˜ ๋…ผ๋ฌธ์— ์‹ ๋ขฐ์„ฑ์„ ์ œ๊ณตํ•˜๊ณ  ๋•Œ๋กœ๋Š” ๊ณ ๋“ฑ ๊ต์œก์—์„œ ํ•„์š”ํ•ฉ๋‹ˆ๋‹ค. ๋‹น์‹ ์˜ ์ธ์ƒ์„ ์‰ฝ๊ฒŒ (๋ฐ ์ธ์šฉ) ์‰ฝ๊ฒŒํ•˜๊ธฐ ์œ„ํ•ด ๊ทธ๋ƒฅ ๋ณต์‚ฌํ•˜๊ณ  ๊ณผ์ œ ๋˜๋Š” ์—์„ธ์ด์— ์•„๋ž˜์˜ ์ •๋ณด๋ฅผ ๋ถ™์—ฌ : Luz, Gelson. ์—ด์šฉ๋Ÿ‰. ๋ฌผ์ž ๋ธ”๋กœ๊ทธ. Gelsonluz.com. dd mm yyyy. URL. ์ด์ œ dd, mm ๋ฐ yyyy๋ฅผ ์ด ํŽ˜์ด์ง€๋ฅผ ํƒ์ƒ‰ํ•œ ์ผ, ์›” ๋ฐ ์—ฐ๋„๋กœ ๋Œ€์ฒดํ•ฉ๋‹ˆ๋‹ค. ๋˜ํ•œ ์ด ํŽ˜์ด์ง€์˜ ์‹ค์ œ URL์— ๋Œ€ํ•œ URL์„ ๋Œ€์ฒดํ•ฉ๋‹ˆ๋‹ค. ์ด ์ธ์šฉ ํ˜•์‹์€ MLA๋ฅผ ๊ธฐ๋ฐ˜์œผ๋กœ ํ•ฉ๋‹ˆ๋‹ค.
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