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Radioactivity
Radiation Notion
Oct 30, 2022
Alan Jo
Alan Jo
Oct 30, 2022
๋ฐฉ์‚ฌ๋Šฅ์€ ๋ฐฉ์‚ฌ์„ ์„ ๋ฐฉ์ถœํ•˜๋Š” ๋Šฅ๋ ฅ
fc7c58c6ed174802b99495f2d7c3c235
ํ•ต๋ฐฉ์‚ฌ์„ 
Radiation Usages
Apr 5, 2020
Alan Jo
Alan Jo
Oct 30, 2022
- ์•ŒํŒŒ๋ฐฉ์‚ฌ์„  - ํ—ฌ๋ฅจ ์›์žํ•ต โ† ๋™์œ„์›์†Œ isotope > - ์›์žํ•ต์€ ๊ฐ•๋ ฅ๊ณผ ์ „์ž๊ธฐ๋ ฅ ์‚ฌ์ด ๊ท ํ˜•์„ ๋งž์ถ”๋ ค๊ณ  ์š”๋™์นœ๋‹ค - ๋ฒ ํƒ€๋ฐฉ์‚ฌ์„  - ์ „์ž - ๊ฐ๋งˆ๋ฐฉ์‚ฌ์„  - ๊ฐ๋งˆ์„  - ์ค‘์„ฑ์ž๋ฐฉ์‚ฌ์„  ๋ชจ๋‘ ๊ณ ์—๋„ˆ์ง€์ด๋‹ค ์–‘์ด ์†Œ๋Ÿ‰์ด์ง€๋งŒ ๋ชจ๋“  ๋ฌผ์งˆ์ด ๋ฐฉ์‚ฌ์„ฑ์ด๋‹ค sv sievert ๋‹จ์œ„ ์ผ๋ฐ˜์  0.003sv๋†์ดŒ ์—ฐ๊ฐ„ ๋„์‹œ 0.006sv ๋ณธ์ธ 0.0006sv 1 ์‹œ๋ฒ„ํŠธ ์ˆœ์‹๊ฐ„ ๋‚ด โ†’ ์ˆ˜์‹œ๊ฐ„ ๋‚ด ๋ฉ”์Šค๊บผ์›€ 2 ์ด์ƒ์ด๋ฉด ํ†  4 ์ด์ƒ์ด๋ฉด ๋Œ€๋ถ€๋ถ„ 30์ผ ๋‚ด์— ์ฃฝ๋Š”๋‹ค 8 ์ด์ƒ์ด๋ฉด ๊ทธ๋ƒฅ์ฃฝ xray 1ํšŒ 0.00005sv
36efada809f94a829cf1de3d8e013d30
์ „์ž๊ธฐ๋ฐฉ์‚ฌ์„ 
Radiation Usages
Apr 5, 2020
Alan Jo
Alan Jo
Oct 30, 2022
Electromagnetic radiation ๋ชจ๋“  ์ „์ž๊ธฐํŒŒ ์˜์—ญ์„ ํ†ต์นญํ•œ๋‹ค ์›์ž์—์„œ ์ „์ž๋ฅผ ๋•Œ๊ฒŒ ๋งŒ๋“ค ์ˆ˜ ์žˆ๋Š” ์ž์™ธ์„  ์ดํ•˜์˜ ์˜์—ญ์ด ์ด์˜จํ™”๋ฅผ ์ผ์œผ์ผœ ๋ถ„์ž๊ตฌ์กฐ๋ฅผ ๋ณ€๊ฒฝ์‹œํ‚ค๊ธฐ ๋•Œ๋ฌธ์— ์„ธํฌ๋ฅผ ์†์ƒ์‹œํ‚จ๋‹ค ์ด๋Ÿฐ ๋ฐฉ์‚ฌ์„ ์„ ์ „๋ฆฌ๋ฐฉ์‚ฌ์„  ํ˜น์€ ์ด์˜จํ™”๋ฐฉ์‚ฌ์„ ์ด๋ผ ํ•œ๋‹ค ionizing radiation ๋‹ค๋ฅธ ์• ๋“ค์ด ๋น„์ด์˜จํ™” ๋ฐฉ์‚ฌ์„  non ionizing radiation
5c55fb352b004ebea77049c494fba30d
Black Body
Radiation Usages
Oct 30, 2022
Alan Jo
Alan Jo
Oct 30, 2022
### Black Body Notion |Title| |:-:| |[Black Body Radiation](https://texonom.com/black-body-radiation-bfd17dcd66dc4e13988f15103a9e2c58)|
b9a9452eab68492cbf2e2cbf6cbbcb3b
ฤŒerenkov effect
Radiation Usages
Aug 28, 2023
Alan Jo
Alan Jo
Aug 29, 2023
[Sonic Boom](https://texonom.com/sonic-boom-775aef3bf2a74899994f9f39bcf7db63)
### Vavilovโ€“Cherenkov radiation charged particle์ด ๋งค์งˆ์—์„œ ๋น›์˜ ์œ„์ƒ์†๋„๋ณด๋‹ค ๋น ๋ฅธ ์†๋„๋กœ ์›€์ง์ผ ๋•Œ ์ „์ž๊ธฐํŒŒ๋ฅผ ๋ฐฉ์ถœํ•˜๋Š” ํšจ๊ณผ ![](https://www.notion.so/image/https%3A%2F%2Fupload.wikimedia.org%2Fwikipedia%2Fcommons%2Fthumb%2F8%2F87%2FCherenkov_radiation-animation.gif%2F330px-Cherenkov_radiation-animation.gif?table=block&id=0e5d113c-3335-4fa5-92c4-56ccf1399ada&cache=v2)
3f9345c114e34419ab2dd53330f06765
Black Body Radiation
Black Body Notion
Oct 30, 2022
Alan Jo
Alan Jo
Oct 30, 2022
bfd17dcd66dc4e13988f15103a9e2c58
Template Page
Volt Notion
Sep 4, 2022
Alan Jo
Alan Jo
Sep 4, 2022
f17ec0c262b94b86b19c71a044e4786a
Free Volt
Volt Usages
Sep 4, 2022
Alan Jo
Alan Jo
Sep 4, 2022
์ „์•• ์ƒ๊ด€์—†์ด 110 220 ๊ฝƒ์œผ๋ฉด ๋˜๋Š”๊ฑฐ
c774bdb958ff451896ffcbd699eb53f0
Condensed Matter Physics
Electromagnetism Topics
May 5, 2021
Alan Jo
Alan Jo
Jul 11, 2022
์‘์ง‘๋ฌผ์งˆ๋ฌผ๋ฆฌํ•™ ๋ฌผ์งˆ์˜ ์‘์ง‘๋œ ์ƒ์˜ ๋ฌผ๋ฆฌ์ ์ธ ํŠน์„ฑ์„ ๋‹ค๋ฃจ๋Š” ๋ฌผ๋ฆฌํ•™์˜ ๋ถ„์•ผ [Debye model](https://texonom.com/debye-model-be7f1818fe5442aa9dbaa713b6cfb46c) [phonon](https://texonom.com/phonon-8a1c9f4bcfc84c5d885129d727782a31)
a8f411ef23384df0a7a46e6dfc637cd4
Currency in Magnet
Electromagnetism Topics
Jul 21, 2020
Alan Jo
Alan Jo
Jul 11, 2022
์ €ํ•ญ๊ณผ ์Šคํ•€์˜ ๊ด€๊ณ„ [Giant Magneto Resistance (GMR)](https://texonom.com/giant-magneto-resistance-gmr-c9db06130f59419f9009fda1814144fb) [Spin Transfer Torque](https://texonom.com/spin-transfer-torque-aa4f8d7b17494a3baedfedee0c57129a) ์šด๋™๊ณผ ์Šคํ•€์˜ ๊ด€๊ณ„ [Spin Hall Effect (SHE)](https://texonom.com/spin-hall-effect-she-e76d837a5427462c90d12ec327d7681f) [์•„์ธ์Šˆํƒ€์ธ-๋“œ ํ•˜์Šค ํšจ๊ณผ](https://texonom.com/ac4f14774280496890f8c04e034f26b4) [Barnett Effect](https://texonom.com/barnett-effect-6f0d5c6aefb9467595e45a3f3ecf6113) ์—ด๊ณผ ์Šคํ•€์˜ ๊ด€๊ณ„ [Spin Seeback Effect (SSE)](https://texonom.com/spin-seeback-effect-sse-0e0ff42ac2a04f1bb2144c513968d6ec) ![](https://www.notion.so/image/https%3A%2F%2Fs3-us-west-2.amazonaws.com%2Fsecure.notion-static.com%2F8c255421-6b2d-4eca-917d-297934968cff%2FScreenshot_20200719-115819_YouTube.jpg?table=block&id=0cdb24f2-52a5-40ca-a957-bcd28ec30502&cache=v2) ![](https://www.notion.so/image/https%3A%2F%2Fs3-us-west-2.amazonaws.com%2Fsecure.notion-static.com%2Fdf4067d8-daf2-4ea3-af0e-53da51dc52d6%2FScreenshot_20200719-115909_YouTube.jpg?table=block&id=7fbe0c0c-df36-4006-99bc-b2a58a1ece48&cache=v2) ![](https://www.notion.so/image/https%3A%2F%2Fs3-us-west-2.amazonaws.com%2Fsecure.notion-static.com%2F84d27a9c-c683-495b-99c7-b443daf505ed%2FScreenshot_20200719-115334_YouTube.jpg?table=block&id=aa128231-28c5-4876-84c9-0367358ed9c4&cache=v2)
faa493d382194c9491b9819070859ede
Electric Field
Electromagnetism Topics
Nov 10, 2022
Alan Jo
Alan Jo
Nov 10, 2022
6728ac8d57154500862a3aa2ce3b090f
**Fine-structure constant**
Electromagnetism Topics
Apr 22, 2023
Alan Jo
Alan Jo
Apr 22, 2023
## **Sommerfeld constant** ๋ฌด์ฐจ์› ์ƒ์ˆ˜์ด๊ธฐ์— ๋‹จ์œ„๊ณ„์— ์˜์กด์ ์ธ ๋‹ค๋ฅธ ์ƒ์ˆ˜๋“ค์— ๋น„ํ•ด ๋ณด๋‹ค ๊ทผ๋ณธ์ ์ธ ์ž์—ฐ์˜ ์„ฑ์งˆ์„ ๋‚˜ํƒ€๋‚ธ๋‹ค๊ณ  ์ƒ๊ฐ๋˜๊ธฐ๋„ ํ•ด ๋ฏธ์„ธ๊ตฌ์กฐ์ƒ์ˆ˜์— ๋งค๋ฃŒ๋œ ๋ฌผ๋ฆฌํ•™์ž๋“ค์ด ๋งŽ์•˜๋‹ค > [Fine-structure constant](https://en.wikipedia.org/wiki/Fine-structure_constant)
78f97fc19d204a63ab8b02b755bdb9ac
Magnetic Field
Electromagnetism Topics
Nov 10, 2022
Alan Jo
Alan Jo
Nov 10, 2022
> [The Electromagnetic field, how Electric and Magnetic forces arise](https://youtu.be/XoVW7CRR5JY)
a507c493a6f24b1eb0c547b7039949a7
Maxwell Equation
Electromagnetism Topics
Jul 21, 2020
Alan Jo
Alan Jo
Jul 11, 2022
๋ฌผ๋ฆฌ์—์„œ ๊ทธ๋ฆผ์œผ๋กœ ์„ค๋ช… ๊ฐ€๋Šฅํ•œ ๋ช‡ ์•ˆ๋˜๋Š” ์ˆ˜์‹
5f0eea3000ea4849a67f0aa39e605324
Debye model
Condensed Matter Physics
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ํฌ๋…ผ์„ ์‚ฌ์šฉํ•˜์—ฌ ๊ฒฐ์ •์˜ ๋น„์—ด์„ ์„ค๋ช…ํ•˜๋Š” ๋ชจํ˜• > [๋””๋ฐ”์ด๋ชจํ˜•](https://naverkpsdictionary.miraheze.org/w/index.php?title=%EB%94%94%EB%B0%94%EC%9D%B4%EB%AA%A8%ED%98%95&mobileaction=toggle_view_desktop)
be7f1818fe5442aa9dbaa713b6cfb46c
phonon
Condensed Matter Physics
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๊ฒฉ์ž์ง„๋™ > [๋””๋ฐ”์ด๋ชจํ˜•](https://naverkpsdictionary.miraheze.org/w/index.php?title=%EB%94%94%EB%B0%94%EC%9D%B4%EB%AA%A8%ED%98%95&mobileaction=toggle_view_desktop)
8a1c9f4bcfc84c5d885129d727782a31
์•„์ธ์Šˆํƒ€์ธ-๋“œ ํ•˜์Šค ํšจ๊ณผ
Currency in Magnet
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์ž๊ธฐ์žฅ ๊ฑธ์–ด์„œ ์ „์ž ์Šคํ•€ ์ •๋ ฌํ•˜๋ฉด ๋ฌผ์ฒด๋„ ๋ˆ๋‹ค
ac4f14774280496890f8c04e034f26b4
Barnett Effect
Currency in Magnet
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2018๋…„ ๋ฌผ์ฒด๋ฅผ ๋Œ๋ฆฌ๋ฉด ์ž์„์ด ๋˜๋Š”๊ฑฐ ์•„๋‹Œ๊ฐ€ ์กฐ๊ธˆ์ด์ง€๋งŒ ๋œ๋‹ค ![](https://www.notion.so/image/https%3A%2F%2Fs3-us-west-2.amazonaws.com%2Fsecure.notion-static.com%2F72c85feb-a9f3-4df6-b2da-46663c743db4%2FUntitled.png?table=block&id=619608f9-ac64-4b83-9c24-e460da6bd71d&cache=v2) 2016 ์œ ์ฒด ![](https://www.notion.so/image/https%3A%2F%2Fs3-us-west-2.amazonaws.com%2Fsecure.notion-static.com%2Ff93f0397-a89e-4ab0-8b85-58dc8ce6893c%2FUntitled.png?table=block&id=faaf4d85-583a-457d-aa4a-4e9fe1b1b2a7&cache=v2)
6f0d5c6aefb9467595e45a3f3ecf6113
Giant Magneto Resistance (GMR)
Currency in Magnet
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1988 ๊ฑฐ๋Œ€์ž๊ธฐ์ €ํ•ญํšจ๊ณผ ์ž์„ ์‚ฌ์ด์˜ ๊ฑฐ๋ฆฌ์— ๋”ฐ๋ผ ์ž๊ธฐ๋ ฅ์˜ ๋ฐฉํ–ฅ์ด ๋ฐ˜๋ณต๋˜๋”๋ผ ๊ทธ๋ƒฅ ์›์ž์  ์„ฑ์งˆ์ด๊ณ  ๋” ์ฃผ์š”ํ•œ ๊ฒƒ์€ ![](https://www.notion.so/image/https%3A%2F%2Fs3-us-west-2.amazonaws.com%2Fsecure.notion-static.com%2F00957b03-06af-481c-a8a3-37e08d3f9be2%2FUntitled.png?table=block&id=2203098c-d6c4-4780-83a5-2d1ce9be4f4b&cache=v2) ![](https://www.notion.so/image/https%3A%2F%2Fs3-us-west-2.amazonaws.com%2Fsecure.notion-static.com%2F531d1834-7c04-47ef-9472-f25d98286597%2FUntitled.png?table=block&id=c2e1e931-4e8f-45c0-a7cd-1a8a8fcf3c11&cache=v2) ์—ฌ๊ธฐ๋‹ค๊ฐ€ ์ „๋ฅ˜๋ฅผ ํ˜๋ฆฌ๋ฉด ์–ด๋–ป๊ฒŒ ๋ ๊นŒ? ํ‰ํ–‰ํ•  ๋•Œ๋Š” ์ €ํ•ญ์ด > ### small resistance > ### big resistance ![](https://www.notion.so/image/https%3A%2F%2Fs3-us-west-2.amazonaws.com%2Fsecure.notion-static.com%2Fd0a9c7b7-9150-482e-abc3-732a34be556b%2FUntitled.png?table=block&id=06e89f1c-cd43-4915-8c92-850432e932d6&cache=v2) ์ด๊ฒŒ ํ•˜๋“œ ๋””์Šคํฌ์— ์“ฐ์—ฌ์„œ ์œ„ ๋‘์‚ฌ๋žŒ ๋…ธ๋ฒจ์ƒ ๋ฐ›์Œ ![](https://www.notion.so/image/https%3A%2F%2Fs3-us-west-2.amazonaws.com%2Fsecure.notion-static.com%2F164e8e2a-a462-43d9-bbd2-e8444f6c3c90%2FUntitled.png?table=block&id=1ab372e5-5781-49b9-8f13-b3f6472c153a&cache=v2) ํ•˜๋“œ๋””์Šคํฌ์— ์ž๊ธฐ๋ ฅ ๋ฐฉํ–ฅ์— ๋”ฐ๋ผ ๋ฐ์ดํ„ฐ ์ €์žฅ ํ—ค๋“œ ์œ„์—๋Š” ํ† ํฌ ๊ณ ์ • ์•„๋ž˜๋Š” ๋ฐ”๋€Œ๋Š”๋ฐ ํ—ค๋“œ ํ‰ํ–‰ ๋ฐ˜ํ‰ํ–‰ ๋ฐ”๋€Œ๋ฉฐ ์ €ํ•ญ ๋ฐ”๋€œ [rkky](https://texonom.com/rkky-b7ba303eaac34d10bc7669557a0ce2da) > [Untitled](https://www.youtube.com/results?search_query=%EC%A0%84%EC%9E%90%EA%B8%B0%ED%95%99+%EA%B1%B0%EB%8C%80+%EC%9E%90%EA%B8%B0+%EC%A0%80%ED%95%AD+%ED%9A%A8%EA%B3%BC)
c9db06130f59419f9009fda1814144fb
Spin Hall Effect (SHE)
Currency in Magnet
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### ์ „์ž๊ฐ€ ์Šคํ•€์„ ๊ฐ€์ง€๊ณ  ์žˆ์œผ๋ฉด ์›€์ง์ผ๋•Œ ํœ˜์–ด์•ผ ํ•˜์ง€ ์•Š๋‚˜? 2004 ์•ผ๊ตฌ๊ณต์ด๋‚˜ ์ถ•๊ตฌ๊ณต์ด ํœ˜๋Š”๊ฑฐ์ฒ˜๋Ÿผ ์ „๋ฅ˜๋„ ํœœ๋‹ค ![](https://www.notion.so/image/https%3A%2F%2Fs3-us-west-2.amazonaws.com%2Fsecure.notion-static.com%2F74eb530a-b11c-4b85-9bb1-5c3c4f8e10dd%2FUntitled.png?table=block&id=2fc99e44-afda-4d1c-b652-3f4009f47480&cache=v2) [Spin Currency](https://texonom.com/spin-currency-66d9367344ef4ba58be09afa65a758a2)
e76d837a5427462c90d12ec327d7681f
Spin Seeback Effect (SSE)
Currency in Magnet
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2008 ๋ฌผ์ฒด์˜ ์˜จ๋„์— ๋”ฐ๋ผ ๋“ฑ๋ฐฉ์„ฑ์ด ๊นจ์ง„ ๋ฌผ์ฒด์—์„œ ์Šคํ•€์ด ์—ด์— ๋”ฐ๋ผ ๋‚˜๋‰œ๋‹ค spin seeback mechanical force ๊ทธ๋Ÿฌ๋ฉด ๋ฌผ์ฒด๋„ ํšŒ์ „ํ•œ๋‹ค 2019 ![](https://www.notion.so/image/https%3A%2F%2Fs3-us-west-2.amazonaws.com%2Fsecure.notion-static.com%2Ffb420072-a564-4116-9a49-19601dacfaec%2FUntitled.png?table=block&id=b2dc66cb-9668-43fb-bacc-dcbdad47bfc4&cache=v2)
0e0ff42ac2a04f1bb2144c513968d6ec
Spin Transfer Torque
Currency in Magnet
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1999 ์ „์ž์˜ ํ๋ฆ„์ด ์ž์„์˜ ๋ฐฉํ–ฅ์— ์˜ํ–ฅ์„ ๋ฐ›์œผ๋‹ˆ ์ž์„์˜ ๋ฐฉํ–ฅ์— ๋”ฐ๋ผ ์ „์ž์˜ ํ๋ฆ„๋„ ์˜ํ–ฅ์„ ๋ฐ›๊ฒ ์ง€? ์ €ํ•ญํฐ ์Šคํ•€ ๋ฐ˜๋Œ€์ธ ์ „์ž๊ฐ€ ๋Œ์•„๊ฐ€๋ฉฐ ์ž๊ธฐ ๋ฒกํ„ฐ๋„ ๋Œ์•„๊ฐ„๋‹ค > [https://www.youtube.com/watch?v=QK3saJHgLNc&t=4049s](https://www.youtube.com/watch?v=QK3saJHgLNc&t=4049s)
aa4f8d7b17494a3baedfedee0c57129a
rkky
Giant Magneto Resistance (GMR)
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b7ba303eaac34d10bc7669557a0ce2da
Spin Currency
Spin Hall Effect (SHE)
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+์ด๋™, - ์ด๋™์ฒ˜๋Ÿผ ์Šคํ•€์ด๋™๋„ ์Šคํ•€์ „๋ฅ˜๋Š” ๊ฒฐ๊ณผ๊ฐ€ ๋ฐ”๋€Œ๋Š” ํ–‰๋™์ด๋‹ค ![](https://www.notion.so/image/https%3A%2F%2Fs3-us-west-2.amazonaws.com%2Fsecure.notion-static.com%2Fd3d9c042-36cb-46d8-84af-28316158dda7%2FUntitled.png?table=block&id=ac1b6ad0-7268-427b-b24c-73100fe90d56&cache=v2)
66d9367344ef4ba58be09afa65a758a2
์• ๋‹ˆ์˜จ
Fractional quantum Hall effect
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null
null
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์ž…์ž์ด๋ฉด์„œ ์ž…์ž๊ฐ€ ์•„๋‹ˆ๊ธฐ๋„ ํ•ด์„œ ๊ฐ€์ƒ์˜ ์ž…์ž ๋ฏธ์ƒ์  ์–‘์ž ์ƒํƒœ์˜ ์ค€์ž…์ž ### quasiparticles ๊ฐ„์„ญํŒจํ„ด์˜ ์–‘์žํ™”๋œ ๋ชจ์Šต์œผ๋กœ ์• ๋‹ˆ์˜จ ์กด์žฌ ์ฆ๋ช… ์–‘์ž ์ปดํ“จํ„ฐ์— ์ด์šฉ ๊ฐ€๋Šฅ [Quantum Computing](https://texonom.com/quantum-computing-f7299cf6bc554d58aeae450df6bc6248) ์œ„์ƒ ์žฌ๋ฃŒ๋กœ ํ๋น„ํŠธ๋ฅผ ํ™œ์šฉํ•˜๊ณ  ๋ฌผ๋ฆฌ์  ์ฐจ์›์—์„œ decoherence ์–ต์ œํ•ด์„œ ์ค‘์ฒฉ ์œ ์ง€์ƒํƒœ์—์„œ ์• ๋‹ˆ์˜จ ์ œ์–ด๋ฅผ ํ†ตํ•ด ์–‘์ž ์ปดํ“จํŒ…์ด ๊ฐ€๋Šฅํ•ด์ง„๋‹ค > [[์ตœ์‹ ๋‰ด์Šค] ์ž…์ž์ด๋ฉด์„œ ์ž…์ž๊ฐ€ ์•„๋‹Œ ์ค€์ž…์ž. ์œ ์‚ฌ์ž…์ž์˜ ๋ฐœ๊ฒฌ](https://www.youtube.com/watch?v=XOFbSO4GHD0)
63c20f2352db434a8cef50c776e51767
Variational Method
Hartreeโ€“Fock methods
Jun 6, 2023
Alan Jo
Alan Jo
Jun 6, 2023
๋ฐ”๋‹ฅ ์ƒํƒœ ์—๋„ˆ์ง€๋ฅผ ๊ทผ์‚ฌํ•˜๋Š” ๊ณ„์‚ฐ๋ฒ• ์‹ค์ œ์˜ ๊ฒฝ๋กœ๋Š” action functional์˜ ์ •๋ฅ˜์ ์— ์กด์žฌํ•œ๋‹ค๋Š” ์›๋ฆฌ(Stationary Action Principle)๋กœ๋ถ€ํ„ฐ ์šด๋™ ๋ฐฉ์ •์‹(Eulerโ€“Lagrange equation)์„ ์œ ๋„ ๊ธฐ์šธ๊ธฐ ฮป๊ฐ€ ์ฃผ์–ด์งˆ ๋•Œ, concave functionย *g(x) = log(x)*๋ฅผ ์ง์„ ์œผ๋กœ ๊ทผ์‚ฌ ![](https://www.notion.so/image/https%3A%2F%2Fs3-us-west-2.amazonaws.com%2Fsecure.notion-static.com%2Fe3796093-2c41-4b6d-b2ff-111de07d708c%2FUntitled.png?table=block&id=8184a962-bd01-4309-9399-e0c32fb13cee&cache=v2) ![](https://www.notion.so/image/https%3A%2F%2Fs3-us-west-2.amazonaws.com%2Fsecure.notion-static.com%2F190d8161-2e18-4fdc-9f3e-cd145effc2b4%2FUntitled.png?table=block&id=2c0d2d0c-0498-4126-a544-ea15f2699dfd&cache=v2) ![](https://www.notion.so/image/https%3A%2F%2Fs3-us-west-2.amazonaws.com%2Fsecure.notion-static.com%2F32c01f87-022b-4297-93a7-52dee6cd9663%2FUntitled.png?table=block&id=d9141eb4-f75d-4617-a72a-fe7dfc59bcde&cache=v2) ![](https://www.notion.so/image/https%3A%2F%2Fs3-us-west-2.amazonaws.com%2Fsecure.notion-static.com%2F72d6088a-dea0-4c5e-b99e-6c221e39fd6a%2FUntitled.png?table=block&id=906ba62c-a054-4ec4-b02a-313d3c15eced&cache=v2) in this example, log ๋ณต์žก์„ฑ์„ ๊ฐ„๋‹จํ•œ ํ•จ์ˆ˜ x๋กœ ํก์ˆ˜ > [Variational Inference ์•Œ์•„๋ณด๊ธฐ - MLE, MAP๋ถ€ํ„ฐ ELBO๊นŒ์ง€](https://modulabs.co.kr/blog/variational-inference-intro/) > [Variational method (quantum mechanics)](https://en.wikipedia.org/wiki/Variational_method_(quantum_mechanics))
da57d88f392e4a20978a6b7a39fb7350
Gapless System
Many Body System Notion
Jun 19, 2022
Alan Jo
Alan Jo
Jun 19, 2022
93835eeed0734658a55ed22b1b005554
Gapped System
Many Body System Notion
Jun 19, 2022
Alan Jo
Alan Jo
Jun 19, 2022
### Gapped System Notion |Title| |:-:| |[Excited State](https://texonom.com/excited-state-0f9e0d7e83624a948dce2db94c3ba2b6)| |[Spectral Gap](https://texonom.com/spectral-gap-00de68f7d7b74a3db2e413a364d0c75c)| |[Ground State](https://texonom.com/ground-state-74e43f3623594b93af31971f5764f3fd)|
76b5e63aa01545bb9cdd25ba4f8bcb3b
Excited State
Gapped System Notion
Jun 19, 2022
Alan Jo
Alan Jo
Jun 19, 2022
๋“ค๋œฌ ์ƒํƒœ
0f9e0d7e83624a948dce2db94c3ba2b6
Ground State
Gapped System Notion
Jun 19, 2022
Alan Jo
Alan Jo
Jun 19, 2022
74e43f3623594b93af31971f5764f3fd
Spectral Gap
Gapped System Notion
Jun 19, 2022
Alan Jo
Alan Jo
Jun 19, 2022
00de68f7d7b74a3db2e413a364d0c75c
non-locality
Quantum Entanglement
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null
null
null
null
๋น„๊ตญ์†Œ์„ฑ ์•„์ธ์Šˆํƒ€์ธ์ด ๋ถ€์ •ํ•œ ๋‚ด์šฉ (์ฝ”ํŽœํ•˜๊ฒ ํ•ด์„)
426f1d31c48d459fb8cbbc2ff81935e8
EPR Controversy
Quantum mechanics Histories
Nov 5, 2019
null
null
null
null
[๊ฒฐ์ •๋ก ](https://texonom.com/faa57b12e73f43288ed7d02e8cc2a664) # Error 1. ์‹ค์žฌ์„ฑ ๊ณ ์ „์—ญํ•™ ์šด๋™๋Ÿ‰ ๋ณด์กด ๋ฒ•์น™์œผ๋กœ ๋ฐ˜๋Œ€ ์ž…์ž์˜ ์œ„์น˜์˜ˆ์ธก ๋‚˜๋จธ์ง€ ํ•˜๋‚˜๋กœ ๊ฐ€๋Šฅ์ด ๋ถˆํ™•์ •์„ฑ ์›๋ฆฌ์™€ใ„ฒใ„ฒRealism๋Š” ์ธ์‹๋ก ์—์„œ, ์˜์‹์ด๋‚˜ ์ฃผ๊ด€, ์ธก์ • ๊ด€๊ณ„์—†์ด ๋…๋ฆฝ์ ์œผ๋กœ ์กด์žฌํ•œ๋‹ค๋Š” ์ด๋ก  ์–‘์ž๋ก ์€ ์•„์ธ์Šˆํƒ€์ธ์˜ ์‹ค์žฌ๋ก  ์กฐ๊ฑด์„ ๋งŒ์กฑํ•˜์ง€ ์•Š์Šต๋‹ˆ๋‹ค. ๊ทธ ๋ณธ์งˆ์ ์ธ ์ด์œ ๋Š” โ€˜์ธก์ •โ€™์— ์žˆ์Šต๋‹ˆ๋‹ค. ์–‘์ž๋ก ์—์„œ๋Š” ์ธก์ •๋œ ๋ฌผ๋ฆฌ๋Ÿ‰๋งŒ์„ ์˜๋ฏธ ์žˆ๋Š” ๊ฒƒ์œผ๋กœ ๋ฐ›์•„๋“ค์ž…๋‹ˆ๋‹ค. ๋”ฐ๋ผ์„œ, ์–‘์ž๋ก ์€ ์•„์ธ์Šˆํƒ€์ธ์˜ ์‹ค์žฌ๋ก  ์กฐ๊ฑด์„ ๋งŒ์กฑํ•˜์ง€ ์•Š์Šต๋‹ˆ๋‹ค # Error 2. ๊ตญ์†Œ์„ฑ ์ •๋ณด์ „๋‹ฌ์ด ๋น›์˜ ์†๋„ ์ด์ƒ์ž„์ด ์ƒ์ถฉ > ์ •๋ณด๊ฐ€ ๋น›๋ณด๋‹ค ๋น ๋ฅด๊ฒŒ ์ „๋‹ฌ๋˜๋Š”๊ฒŒ ๋ฏธ๋ž˜์™€ ๊ณผ๊ฑฐ๊ฐ€ ๋™์‹œ์— ๊ฒฐ์ •๋˜์ง€๋งŒ , ์˜๋„ํ•œ ์ •๋ณด๋ฅผ ์ „๋‹ฌํ•˜๋Š” ๊ฒƒ์ด ์•„๋‹ˆ๊ธฐ ๋•Œ๋ฌธ์— ์ธ๊ณผ๊ด€๊ณ„๋ฅผ ์–ด์ง€๋Ÿฝํžˆ์ง€ ์•Š๋Š”๋‹ค # Quantum Spin ๊ฐ์šด๋™๋Ÿ‰ 0์ธ ์ž…์ž 1๊ฐœ๊ฐ€ ๋ถ•๊ดด ์–‘์ž์˜ ์ž์ „์šด๋™์— ์˜ํ•œ ์Šคํ•€์ด ๋ฐ˜๋Œ€๋กœ ๋ถ•๊ดด (up (1/2) and down(-1/2)) ์ „์ž ๊ฐ๊ฐ spin์ด ์ค‘์ฒฉ๋œ ์ƒํƒœ๋กœ ๋ถ•๊ดด๋˜์–ด ๋‚ ์•„๊ฐ 1๊ฐœ๋ฅผ ์ธก์ •ํ•˜๋ฉด ๋ฌดํ•œํžˆ ๋ฉ€์–ด์ง„ ๋ฐ˜๋Œ€ ์ „์ž๊ฐ€ ๋ฐ˜๋Œ€ ์Šคํ•€์œผ๋กœ ์ •ํ•ด์ง > ์ˆจ์€๋ณ€์ˆ˜ ์ด๋ก  bu ์•„์ธ์Šˆํƒ€์ธ > ์–‘์ž์—ญํ•™์— ์ˆจ์€๋ณ€์ˆ˜๊ฐ€ ์žˆ๋Š”๊ฑฐ๊ณ  ์ด๋ฏธ ๊ฒฐ์ •๋œ ์ƒํƒœ๋กœ spin ๋‚ ์•„๊ฐ but ๊ณ ์ •์  ์„ ํ˜•๊ด€๊ณ„๋กœ ์•ˆ๋‚˜์˜ค๊ณ  ํŠน์ • spin ๊ฐ€์งˆ ํ™•๋ฅ  ๋†’์€ sinํŒŒ ํ˜•ํƒœ๋ฅผ ๊ฐ€์ง # ๊ฒฐ๋ก  EPR์˜ ๋…ผ์ฆ์€ ๋ฒจ์˜ ๋ถ€๋“ฑ์‹๊ณผ ์•„์ŠคํŽ˜์˜ ์‹คํ—˜์— ์˜ํ•ด ๋ถ€์ •๋˜์—ˆ์Šต๋‹ˆ๋‹ค ์šฐ์ฃผ๊ฐ€ ๋น„๊ตญ์†Œ์ ์ž„(์–ฝํž˜)์ด ํ™•์ธ๋œ ๊ฒƒ์ž…๋‹ˆ๋‹ค. ์—ฌ๊ธฐ์„œ ํ™•์ธ๋œ ๊ฒƒ์€ ์ƒํ˜ธ์ž‘์šฉ ๋Œ€์ƒ(๊ฒฐ์–ด๊ธ‹๋‚จ์˜ ๊ฐ„์„ญ ์ƒ๋Œ€)๊ณผ ๋ถ„๋ฆฌ๋œ ์ƒํƒœ์—์„œ ๋…๋ฆฝ์ ์ธ ์†์„ฑ์„ ๊ฐ€์งˆ ์ˆ˜ ์—†๋‹ค๋Š” ์‚ฌ์‹ค์ž…๋‹ˆ๋‹ค. ๊ฒฐ๊ตญ ์–‘์ž์  ํŠน์„ฑ์„ ์žƒ๋Š” ๊ณผ์ • local realism์„ ๋ฒ—์–ด๋‚˜ holistic realism์˜ ๊ด€๊ณ„๋ก ์  ์šฐ์ฃผ๋ก ์˜ ์‹œ์ž‘
5b60eed376f24b79872abe879b9dbd4f
๊ฒฐ์ •๋ก 
EPR Controversy
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null
null
null
null
์ธ๊ณผ์œจ์ด๋ž€ ์–ด๋–ค ์‚ฌ๊ฑด์˜ ์›์ธ์ด ์žˆ์€ ๋‹ค์Œ ๊ฒฐ๊ณผ๊ฐ€ ๋ฐœ์ƒํ•œ๋‹ค๋Š” ๊ฒƒ์ž…๋‹ˆ๋‹ค. ๊ทธ๋ฆฌ๊ณ  ์ด ์›์ธ๊ณผ ๊ฒฐ๊ณผ ์‚ฌ์ด์— ์ตœ์†Œํ•œ ๋น›์˜ ์†๋„์— ํ•ด๋‹นํ•˜๋Š” ์‹œ๊ฐ„ ๊ฒฝ๊ณผ๊ฐ€ ์ „์ œ๋˜์–ด์•ผ ํ•ฉ๋‹ˆ๋‹ค. ์ด๋ฅผ ์•„์ธ์Šˆํƒ€์ธ์˜ ๊ตญ์†Œ์  ์ธ๊ณผ์œจ์ด๋ผ๊ณ  ํ•ฉ๋‹ˆ๋‹ค. ์ด๋ฅผํ…Œ๋ฉด ์›์ธ๊ณผ ๊ฒฐ๊ณผ๊ฐ€ ์ฆ‰๊ฐ์ ์œผ๋กœ ํ˜น์€ ๋™์‹œ์— ๋ฐœ์ƒํ•œ๋‹ค๋ฉด ์ด๋Š” ๊ตญ์†Œ์  ์ธ๊ณผ์œจ์„ ์œ„๋ฐฐํ•˜๋Š” ๊ฒƒ์ž…๋‹ˆ๋‹ค. ์ด๋Ÿฐ ์ ์—์„œ ์–‘์ž๋ก ์€ ๊ตญ์†Œ์  ์ธ๊ณผ์œจ์„ ์œ„๋ฐฐํ•ฉ๋‹ˆ๋‹ค. โ€˜EPR ๋…ผ์Ÿโ€™์—์„œ ์‚ดํŽด๋ณด์•˜๋“ฏ์ด ์–‘์ž๋ก ์—์„œ๋Š” ์•„์ธ์Šˆํƒ€์ธ์˜ ๊ตญ์†Œ์  ์ธ๊ณผ์œจ์ด ์„ฑ๋ฆฝํ•˜์ง€ ์•Š์Šต๋‹ˆ๋‹ค. ํ•œ ์ž…์ž์— ๋Œ€ํ•œ ๊ด€์ธก ํ–‰์œ„๊ฐ€ ๊ณต๊ฐ„์ ์œผ๋กœ ๋–จ์–ด์ ธ ์žˆ๋Š” ๊ทธ ์ž…์ž์˜ ์Œ์ž…์ž์—๊ฒŒ ์ฆ‰๊ฐ์ ์œผ๋กœ ์˜ํ–ฅ์„ ๋ฏธ์น˜๋Š” ๊ธฐ๋ฌ˜ํ•œ ํ˜„์ƒ์ด ๋ฐœ์ƒํ•ฉ๋‹ˆ๋‹ค. ์ด์ฒ˜๋Ÿผ ์–‘์ž๋ก ์—๋Š” ๊ณ ์ „์—ญํ•™๊ณผ ์ƒ๋Œ€๋ก ์˜ ์ธ๊ณผ์œจ์„ ์ ์šฉํ•  ์ˆ˜ ์—†๋Š” ๊ฒƒ์ด ๋ถ„๋ช…ํ•ฉ๋‹ˆ๋‹ค. **๋”ฐ๋ผ์„œ ์ผ์ •ํ•œ ์ธ๊ณผ๋ฒ•์น™์ด ์„ฑ๋ฆฝํ•˜์ง€ ์•Š๋Š”๋‹ค๋ฉด ์ด์— ๋”ฐ๋ฅธ ๊ฒฐ์ •๋ก ์„ ๊ธฐ๋Œ€ํ•˜๋Š” ๊ฒƒ์€ ๋ฌด๋ฆฌ์ž…๋‹ˆ๋‹ค.** ๊ทธ๋Ÿฌ๋‚˜ ์–‘์ž๋ก ์—์„œ๋Š” ์ธ๊ณผ์œจ์ด ์ „ํ˜€ ์„ฑ๋ฆฝํ•˜์ง€ ์•Š๋Š”๋‹ค๊ณ  ๋งํ•˜๊ธฐ๋„ ํž™๋“ญ๋‹ˆ๋‹ค. ์ธ๊ณผ์œจ์ด ์ „์ œ๋˜์ง€ ์•Š์€ ์ž์—ฐ๊ณผํ•™์€ ์„ฑ๋ฆฝํ•  ์ˆ˜ ์—†๊ธฐ ๋•Œ๋ฌธ์ž…๋‹ˆ๋‹ค. ๋‹ค๋งŒ ์–‘์ž๋ก ์€ ๊ณ ์ „์—ญํ•™๊ณผ ์ƒ๋Œ€์„ฑ์ด๋ก ๊ณผ๋Š” ๋‹ค๋ฅธ ์ƒˆ๋กœ์šด ํŒจ๋Ÿฌ๋‹ค์ž„์˜ ์ธ๊ณผ์œจ, ์ฆ‰ ํ™•๋ฅ ์— ๊ทผ๊ฑฐํ•œ โ€˜ํ™•๋ฅ ๋ก ์  ์ธ๊ณผ์œจโ€™๊ณผ โ€˜ํ™•๋ฅ ๋ก ์  ๊ฒฐ์ •๋ก โ€™์„ ๋‚ดํฌํ•œ๋‹ค๊ณ  ๋งํ•  ์ˆ˜ ์žˆ์Šต๋‹ˆ๋‹ค. # Reference > [์–‘์ž๋ก ์  ์šฐ์ฃผ๊ด€ ... โž€๋น„๊ฒฐ์ •๋ก ](http://www.injurytime.kr/news/articleView.html?idxno=4865)
faa57b12e73f43288ed7d02e8cc2a664
Pauli exclusion priciple
Quantum Principles
Feb 16, 2020
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null
null
5fd3d6cb2b83477bb9de9e093e5b076e
**Uncertainty principle**
Quantum Principles
Sep 17, 2023
Alan Jo
Alan Jo
Sep 17, 2023
[Werner Heisenberg](https://texonom.com/werner-heisenberg-ec7bef9815ec465085bf5a60828c88b7)
### **Heisenberg's uncertainty principle** > [Complete set of commuting observables](https://en.wikipedia.org/wiki/Complete_set_of_commuting_observables) > [Uncertainty principle](https://en.wikipedia.org/wiki/Uncertainty_principle)
875508f6ffd44a7db5ac83a22c5a1f45
**Schrรถdingerโ€™s Cat**
Quantum superposition
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null
ee79c4a29ce74960b6f556810f668055
FTL
Relative Mechanics Notion
Nov 5, 2019
Alan Jo
Seong-lae Cho
Mar 28, 2023
[Light](https://texonom.com/light-4197aa5e74f34f0ca1792703459afc94)
๋น›๋ณด๋‹ค ๋น ๋ฅธ ๊ฒƒ์ด ์กด์žฌํ•˜์ง€ ์•Š๋Š”๋‹ค๋Š” ๊ฑด ํ”ํžˆ ์•Œ๋ ค์ง„ ์ž˜๋ชป๋œ ์‚ฌ์‹ค Cosmological horizon์ด๋“  ๋ญ๋“  ์ƒ๋Œ€์†๋„๊ฐ€ ๋น›๋ณด๋‹ค ๋น ๋ฅผ ์ˆ˜ ์žˆ๋Š” ๊ฒฝ์šฐ๋Š” ๋ฌดํ•œํ•˜๋‹ค ๋‹ฌ ์ „์ฒด๋ฅผ ๋‹จ๋ฒˆ์— ๋น„์ถ”๋Š” ์—„์ฒญ๋‚˜๊ฒŒ ๊ฐ•๋ ฅํ•œ ์  ๊ด‘์› ์†์ „๋“ฑ์œผ๋กœ ๋‹ฌ์„ ๋น„์ถ˜๋’ค, ์†๊ฐ€๋ฝ์œผ๋กœ ์™ผ์ชฝ์—์„œ ์˜ค๋ฅธ์ชฝ์œผ๋กœ ๊ทธ๋ฆผ์ž๋ฅผ ๋“œ๋ฆฌ์šฐ๋ฉด ๋‹ฌ ํ‘œ๋ฉด์ƒ์—์„œ ๊ทธ๋ฆผ์ž๊ฐ€ ์ด๋™ํ•˜๋Š” ์†๋„๋Š” ๋น›๋ณด๋‹ค ๋น ๋ฅด๋‹ค ํ•˜์ง€๋งŒ ์ด๋Ÿฐ ํ˜„์ƒ์œผ๋กœ ์ •๋ณด๋ฅผ ์ „๋‹ฌํ•˜๋Š” ๊ฒƒ์€ ๋ฌผ๋ฆฌ์ ์œผ๋กœ ๋ถˆ๊ฐ€๋Šฅ ์งˆ๋Ÿ‰์„ ์ง€๋‹Œ ๋ฌผ์ฒด๋„ ๊ทธ ์ž์ฒด๊ฐ€ ์ •๋ณด๋ฅผ ์ง€๋‹Œ ์กด์žฌ์ด๋ฏ€๋กœ ์ •๋ณด๋ฅผ ์ „๋‹ฌํ•˜๋Š” ์ƒํ™ฉ, ์ฆ‰ "ํ”ํžˆ๋“ค ์ƒ๊ฐํ•˜๋Š” ์ด๋™" ์ค‘์ผ ๋•Œ๋Š” ์ด์— ๋ฌด์กฐ๊ฑด์ ์œผ๋กœ ๊ตฌ์† ### ****We all move at the Speed of Light**** > [We all move at the Speed of Light](https://www.youtube.com/watch?v=au0QJYISe4c&t=612s) > [Untitled](https://namu.wiki/w/%EC%B4%88%EA%B4%91%EC%86%8D)
4f712f216ad3420c87899e8b4e24744b
General Relativity
Relative Mechanics Notion
Aug 28, 2022
Alan Jo
Alan Jo
Jun 11, 2023
[Gravity](https://texonom.com/gravity-28be39f47f6148d7be852b4821b0779b) [Geodesic Distance](https://texonom.com/geodesic-distance-b3fce1b60ef848e481da3e9d0a65e188) [Special Relativity](https://texonom.com/special-relativity-bf2d1a6d183f4eeeb5892ac3c929f8f7)
### General Relativity Notion |Title| |:-:| |[Einstein Field Equations](https://texonom.com/einstein-field-equations-707f1f0433934dfb8200e41f5f1a796c)| ### Visualize ([Space](https://texonom.com/space-4e5b6983629644d6908e263fcb4a3dcd) is not bended) > [A new way to visualize General Relativity](https://www.youtube.com/watch?v=wrwgIjBUYVc) > [Untitled](https://www.youtube.com/watch?v=xodtfM1r9FA&list=PLu7cY2CPiRjVY-VaUZ69bXHZr5QslKbzo)
72239ab84ec84197b89ae29e0cdf8db1
**Special Relativity**
Relative Mechanics Notion
Aug 28, 2022
Alan Jo
Alan Jo
Aug 28, 2022
### **Special Relativity Notion** |Title| |:-:| |[Lorentz contraction](https://texonom.com/lorentz-contraction-7fa52fb0509b45218c9411739a65fb34)| |[Minkowski space](https://texonom.com/minkowski-space-7883153709ff415296238727e4c04085)| |[Lorentz transformation](https://texonom.com/lorentz-transformation-32b3384de4814b88a03bcb861845bbba)| |[Twin Paradox](https://texonom.com/twin-paradox-49ca040526974ff5929302e91b485c23)| |[Relative Velocity](https://texonom.com/relative-velocity-5957ce61788f4c2e8308599e96acf70d)|
bf2d1a6d183f4eeeb5892ac3c929f8f7
Speed
Relative Mechanics Notion
Jul 23, 2021
Alan Jo
Alan Jo
Mar 28, 2023
[Speed of Light](https://texonom.com/speed-of-light-7f56f8bd5d7344c28bef9ec3e6ec3aa2)
### Speed is angle between two trajectories in [Spacetime](https://texonom.com/spacetime-cb5736b026fa4c19b6b35c614b50c6b9) angle is usually called rapidity ![](https://www.notion.so/image/https%3A%2F%2Fs3-us-west-2.amazonaws.com%2Fsecure.notion-static.com%2F1e36fd87-8b41-4388-9f99-353381399e83%2FUntitled.png?table=block&id=d4f46b63-c196-4ba1-8047-23d201c77408&cache=v2) ์ง„๊ณต ์†์˜ ๋น›์˜ ์†๋„๋ณด๋‹ค ๋น ๋ฅด๊ฒŒ ์ •๋ณด๋ฅผ ์ „๋‹ฌ ํ•  ์ˆ˜ ์—†๋‹ค๋Š” ๊ฒƒ ์•„์ธ์Šˆํƒ€์ธ ๋…ผ๋ฌธ ์ด๋ฆ„ - ์›€์ง์ด๋Š” ๋ฌผ์ฒด์˜ ์ „๊ธฐ์—ญํ•™์— ๋Œ€ํ•˜์—ฌ ์•„์ธ์Šˆํƒ€์ธ ์Šค์Šน ํ—ค๋ฅด๋งŒ ๋ฏผ์ฝ”ํ”„์Šคํ‚ค์˜ ๋ฏผ์ฝ”ํ”„์Šคํ‚ค ์‹œ๊ณต์„ธ๊ณ„๋ฅผ ๊ธฐ๋ฐ˜์œผ๋กœ ํƒ„์ƒ ![](https://www.notion.so/image/https%3A%2F%2Fs3-us-west-2.amazonaws.com%2Fsecure.notion-static.com%2Fc0fab6bd-59be-4277-9956-84b866c0794f%2FScreenshot_20190717-015040_YouTube.jpg?table=block&id=0c444cd2-cb7d-4ab3-b922-342d86278343&cache=v2) > [Visualizing Time Dilation](https://www.youtube.com/watch?v=5qQheJn-FHc) > [We all move at the Speed of Light](https://youtu.be/au0QJYISe4c)
90bf26ebd94f472bb6e4404d63492e84
Einstein Field Equations
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๋ฐฉ์ •์‹์˜ ์ขŒ๋ณ€์€ ์‹œ๊ณต๊ฐ„์˜ ๊ธฐํ•˜ํ•™์  ์ •๋ณด๋ฅผ ๋‚˜ํƒ€๋‚ด๊ณ , ์šฐ๋ณ€์€ ์—๋„ˆ์ง€์˜ ๋ถ„ํฌ๋ฅผ ๋‚˜ํƒ€๋‚ธ๋‹ค $$R_{ฮผฮฝ}โˆ’\frac{1}{2}g_{ฮผฮฝ}R+ฮ›g_{ฮผฮฝ}=\frac{8ฯ€G}{c^4}T_{ฮผฮฝ},G_{ฮผฮฝ}=R_{ฮผฮฝ}โˆ’\frac{1}{2}g_{ฮผฮฝ}R$$ > [Untitled](https://arxiv.org/pdf/physics/9905030.pdf) > [The Maths of General Relativity (7/8) - The Einstein equation](https://www.youtube.com/watch?v=PCujLVSRuMk) > [Sitzungsberichte der Kรถniglich Preussischen Akademie der Wissenschaften zu Berlin : Deutsche Akademie der Wissenschaften zu Berlin : Free Download, Borrow, and Streaming : Internet Archive](https://archive.org/details/sitzungsberichte1915deut/page/844/mode/2up)
707f1f0433934dfb8200e41f5f1a796c
Cosmological Constant
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### ์šฐ์ฃผ์ƒ์ˆ˜ 1. ์ •์  ์šฐ์ฃผ๋ฅผ ํ‘œํ˜„ํ•˜๋ ค๊ณ  ์•„์ธ์Šˆํƒ€์ธ ๋ฐฉ์ •์‹์˜ ์•„์ธ์Šˆํƒ€์ธ ํ…์„œ์— ์ถ”๊ฐ€ 2. ํ˜„๋Œ€ ์ฒœ์ฒด๋ฌผ๋ฆฌํ•™์˜ ๊ด€์ธก ์‚ฌ์‹ค๋กœ๋ถ€ํ„ฐ ฮ›๊ฐ€ ์ถ”๊ฐ€๋˜๊ธฐ ์ „์˜ ์ดˆ๊ธฐ ๋ชจ๋ธ์ธ ์•„์ธ์Šˆํƒ€์ธ ๋ฐฉ์ •์‹์ด ์˜คํžˆ๋ ค ๋ธ”๋ž™ํ™€๋ฟ๋งŒ์•„๋‹ˆ๋ผ ํŒฝ์ฐฝ์šฐ์ฃผ๋ฅผ ์„ค๋ช…ํ•˜๋Š”๋ฐ ์ ํ•ฉ 3. ์•„์ธ์Šˆํƒ€์ธ์€ ์ดˆ๊ธฐ ์•„์ธ์Šˆํƒ€์ธ ๋ฐฉ์ •์‹ ๊ณ„์‚ฐ์œผ๋กœ๋ถ€ํ„ฐ ์šฐ์ฃผ ๋ชจ๋ธ์ด ์œ ๋™์ ์ด๋ผ๋Š” ์‚ฌ์‹ค์„ ์ธ์ง€ํ•œ๊ฒƒ์œผ๋กœ ์—ฌ๊ฒจ์ง„๋‹ค 4. ์ตœ๊ทผ์—๋Š” ํŒฝ์ฐฝ์šฐ์ฃผ๋ฅผ ์—„์ฒญ๋‚˜๊ฒŒ ๋น ๋ฅธ ๊ฐ€์†๋„์—์„œ ๋‹ค๋ฃจ๊ธฐ ์œ„ํ•ด ์ด๋Ÿฌํ•œ ๋งฅ๋ฝ์—์„œ ์šฐ์ฃผ ์ƒ์ˆ˜ ฮ›๋ฅผ ๋ณ€์ˆ˜์ฒ˜๋Ÿผ ์‚ฌ์šฉํ•˜๋Š” ๊ฒฝ์šฐ๋„ ์žˆ๋‹ค > [Untitled](https://namu.wiki/w/%EC%95%84%EC%9D%B8%EC%8A%88%ED%83%80%EC%9D%B8%20%EB%B0%A9%EC%A0%95%EC%8B%9D#fn-1)
dcd8fb5b1655474f8e4f8b607b289e10
**Einstein tensor**
Einstein Field Equation Notion
Apr 22, 2023
Alan Jo
Alan Jo
Apr 22, 2023
์‹œ๊ณต์˜ ๊ณก๋ฅ ์„ ๋‚˜ํƒ€๋‚ด๋Š” ์•„์ธ์Šˆํƒ€์ธ ํ…์„œ๋Š” ๋ฌผ์งˆ์ด ๋ฐœ์ƒ์‹œํ‚ค๋Š” ์—๋„ˆ์ง€-์šด๋™๋Ÿ‰ ํ…์„œ์— ๋น„๋ก€
b0f3518034b343aab1cead2d9f3ed87a
**Einsteinโ€“Hilbert action**
Einstein Field Equation Notion
Apr 22, 2023
Alan Jo
Alan Jo
Apr 22, 2023
ef8df42b1ffa454c88ed0b7f7d9aad2d
FLRW Metric
Einstein Field Equation Notion
Apr 22, 2023
Alan Jo
Alan Jo
Apr 22, 2023
[Standard model of cosmology](https://texonom.com/standard-model-of-cosmology-f81198e095fa481baef9afa313687b62) [Cosmological principle](https://texonom.com/cosmological-principle-23c01007dee946a881843248f93d24bf)
## Friedmannโ€“Lemaรฎtreโ€“Robertsonโ€“Walker metric > [Friedmannโ€“Lemaรฎtreโ€“Robertsonโ€“Walker metric](https://en.wikipedia.org/wiki/Friedmannโ€“Lemaรฎtreโ€“Robertsonโ€“Walker_metric)
2bdfbcf9016d40c08418396fd4e60f92
Minkowski metric
Einstein Field Equation Notion
Apr 22, 2023
Alan Jo
Alan Jo
Apr 22, 2023
## pseudo-Riemannian metric [Special Relativity](https://texonom.com/special-relativity-bf2d1a6d183f4eeeb5892ac3c929f8f7) ์„ค๋ช…ํ•˜๋ฉฐ [Minkowski space](https://texonom.com/minkowski-space-7883153709ff415296238727e4c04085) ๋„ Minkowski metric์œผ๋กœ ์ž˜ ์„ค๋ช…ํ•œ๋‹ค > [Minkowski Metric -- from Wolfram MathWorld](https://mathworld.wolfram.com/MinkowskiMetric.html)
c47fb86d7f224d41b1a927827fdadbfb
**Reissner-Nordstrรถm metric**
Einstein Field Equation Notion
Apr 22, 2023
Alan Jo
Alan Jo
Apr 22, 2023
5878b3ca8bda4919b1414d1f5455bcc3
Schwarzschild Metric
Einstein Field Equation Notion
Apr 22, 2023
Alan Jo
Alan Jo
Apr 22, 2023
[Schwarzschild radius](https://texonom.com/schwarzschild-radius-0458384bc43a4dc0af4b886ee6e095ad)
์Šˆ๋ฐ”๋ฅด์ธ ์‹คํŠธ ๊ณ„๋Ÿ‰ ๋˜๋Š” ์Šˆ๋ฐ”๋ฅด์ธ ์‹คํŠธ ํ•ด ๊ตฌํ˜• ๋Œ€์นญ์ด๋ฉฐ ๋Œ€์ „๋˜๊ฑฐ๋‚˜ ํšŒ์ „ํ•˜์ง€ ์•Š๊ณ , ์ •์ ์ธ ์งˆ๋Ÿ‰ ๋ถ„ํฌ๋ฅผ ๋‚˜ํƒ€๋‚ด๋Š” ์•„์ธ์Šˆํƒ€์ธ ๋ฐฉ์ •์‹์˜ ํ•ด > [Untitled](https://www.youtube.com/watch?v=PCujLVSRuMk)
de13672a4d9349a09d366f087a78f15f
**Lorentz contraction**
Special Relativity Notion
Jul 5, 2022
Alan Jo
Alan Jo
Aug 28, 2022
1892๋…„ H. A. ๋กœ๋ Œ์ธ ์™€ G. F. ํ”ผ์ธ ์ œ๋Ÿด๋“œ๊ฐ€ ๊ฐ๊ธฐ ๋…์ž์ ์œผ๋กœ ์ œ์ฐฝํ•œ ์„ค ์ด ํšจ๊ณผ์˜ ์˜๋ฏธ๋Š” 1905๋…„ A. ์•„์ธ์Šˆํƒ€์ธ์˜ ์ƒ๋Œ€์„ฑ ์ด๋ก ์—์„œ ํ•œ์ธต ๊ทน๋ช…ํ•˜๊ฒŒ ๋“œ๋Ÿฌ๋‚ฌ๋‹ค ๋งˆ์ด์ปฌ์Šจ-๋ชฐ๋ฆฌ์˜ ์‹คํ—˜ ๊ฒฐ๊ณผ๋ฅผ ์„ค๋ช…ํ•  ๋•Œ ์ด์šฉ > [๋กœ๋ Œ์ธ  ์ˆ˜์ถ•(Lorentz contraction) | ๊ณผํ•™๋ฌธํ™”ํฌํ„ธ ์‚ฌ์ด์–ธ์Šค์˜ฌ](https://www.scienceall.com/%EB%A1%9C%EB%A0%8C%EC%B8%A0-%EC%88%98%EC%B6%95lorentz-contraction/)
7fa52fb0509b45218c9411739a65fb34
Lorentz transformation
Special Relativity Notion
May 31, 2023
Alan Jo
Alan Jo
Jul 28, 2023
[Magnetic Field](https://texonom.com/magnetic-field-a507c493a6f24b1eb0c547b7039949a7) has also hyperbolic > [Hyperbolic rotations of spacetime](https://youtu.be/qdycfWfAtsM)
32b3384de4814b88a03bcb861845bbba
Minkowski **space**
Special Relativity Notion
Aug 28, 2022
Alan Jo
Alan Jo
May 31, 2023
[Lorentz transformation](https://texonom.com/lorentz-transformation-32b3384de4814b88a03bcb861845bbba)
## Minkowski Diagram ![](https://www.notion.so/image/https%3A%2F%2Fs3-us-west-2.amazonaws.com%2Fsecure.notion-static.com%2F41ed31f5-9cd5-4cbc-91c0-bf05683fe160%2FUntitled.png?table=block&id=05b05ded-a0ff-422f-a783-99e0147e7045&cache=v2) ์ƒ๋Œ€์„ฑ ์ด๋ก ์„ ์ขŒํ‘œํ‰๋ฉด ์ƒ์—์„œ ์ž˜ ๊ธฐ์ˆ ํ•˜๋Š” ์‹œ๊ณต๊ฐ„์˜ ์ˆ˜ํ•™์  ๋ชจ๋ธ **์ƒ๋Œ€์„ฑ ์ด๋ก ์„ ์™„๋ฒฝํžˆ ์ดํ•ดํ•˜๊ธฐ ์œ„ํ•ด์„  ์ด ๊ณต๊ฐ„์˜ ์ดํ•ด๊ฐ€ ํ•„์—ฐ์ ** ์ƒ๋Œ€์„ฑ ์ด๋ก ์—์„œย **์‚ฌ๊ฑด**์ด๋ผ๋Š” ๊ฒƒ์€ ์ด ๋ฏผ์ฝ”ํ”„์Šคํ‚ค ์‹œ๊ณต๊ฐ„์˜ ํ•œ ์  ์ด ๊ณต๊ฐ„์—์„œ๋Š” ์ผ๋ฐ˜์ ์ธ 3์ฐจ์› ๊ณต๊ฐ„์™€ 1์ฐจ์›์˜ ์‹œ๊ฐ„์ด ์„œ๋กœ ์กฐํ•ฉ๋˜์–ด ์‹œ๊ณต๊ฐ„์˜ 4์ฐจ์› ๋‹ค์–‘์ฒด๋ฅผ ํ‘œํ˜„ํ•˜์—ฌ ๊ธฐํ•˜ํ•™์ ์œผ๋กœ ํ†ตํ•ฉ๋œ ๊ด€์  Hyperspace of the present์—์„œ ์ž…์ž์— ์˜ํ–ฅ์ค„ ์ˆ˜ ์žˆ๋Š” ๊ฑด ํ•˜๋‚˜๋„ ์—†๋‹ค (๊ทธ ์ž…์ž์˜ ์ ๋งŒ ์กด์žฌ) ### Minkowski **space Notion** |Title| |:-:| |[World Line](https://texonom.com/world-line-fa8bb3f4ec0f407cb5cc6a1032d4e8c5)| |[Light Cone](https://texonom.com/light-cone-1f9c4bd793524f2cb584f7add19d9768)| |[Spacetime interval](https://texonom.com/spacetime-interval-02c10f7bfe344e94b9563ab74c50c162)| > [The Maths of General Relativity (7/8) - The Einstein equation](https://www.youtube.com/watch?v=PCujLVSRuMk)
7883153709ff415296238727e4c04085
Relative Velocity
Special Relativity Notion
May 31, 2023
Alan Jo
Alan Jo
May 31, 2023
[Lorentz transformation](https://texonom.com/lorentz-transformation-32b3384de4814b88a03bcb861845bbba)
- ์ƒ๋Œ€ ์†๋„ ๋”ํ• ๋•Œ ๋น›์˜ ์†๋„ ๋„˜์ง€ ์•Š๋Š” ์ด์œ  - ๋ชจ๋“  ์ขŒํ‘œ๊ณ„์—์„œ ๋น›์˜ ์†๋„๊ฐ€ c์ธ ์ด์œ 
5957ce61788f4c2e8308599e96acf70d
Twin Paradox
Special Relativity Notion
May 31, 2023
Alan Jo
Alan Jo
May 31, 2023
49ca040526974ff5929302e91b485c23
Light Cone
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2์ฐจ์› ๊ณต๊ฐ„์„ ์ƒ๊ฐํ•  ๊ฒฝ์šฐ ์„ธ๊ณ„์„ ์˜ ์ง‘ํ•ฉ์€ ์›๋ฟ”์„ ๊ทธ๋ฆฌ๊ธฐ ๋•Œ๋ฌธ ๊ด‘์›๋ฟ”์˜ ์ ‘์ ๋ณด๋‹ค ์œ„์ชฝ ์˜์—ญ์„ ์ž…์ž์˜ ๋ฏธ๋ž˜, ์•„๋ž˜ ์˜์—ญ์„ ๊ณผ๊ฑฐ๋กœ ๊ทœ์ • ![](https://www.notion.so/image/https%3A%2F%2Fs3-us-west-2.amazonaws.com%2Fsecure.notion-static.com%2F41ed31f5-9cd5-4cbc-91c0-bf05683fe160%2FUntitled.png?table=block&id=1056980f-e4b3-4086-bc15-c10809218998&cache=v2)
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S**pacetime interval**
Minkowski space Notion
Aug 28, 2022
Alan Jo
Alan Jo
May 31, 2023
$$S^2=โˆ’c^2t^2+x^2+y^2+z^2$$ $-c^2t^2$ is spacetime interval ์‹œ๊ณต๊ฐ„ ๊ฐ„๊ฒฉ์€ 0์ด ๋  ์ˆ˜๋„ ์Œ์ˆ˜ ๋˜ํ•œ ๊ฐ€๋Šฅ ### Spacelike Interval $S^2 > 0$ ### Lightlike Interval $S^2 = 0$ ### Timelike Interval $S^2 < 0$
02c10f7bfe344e94b9563ab74c50c162
World Line
Minkowski space Notion
Aug 28, 2022
Alan Jo
Alan Jo
May 31, 2023
์ž…์ž๊ฐ€ ๋ฏผ์ฝ”ํ”„์Šคํ‚ค ์‹œ๊ณต๊ฐ„์— ๊ทธ๋ฆฌ๋Š” ๊ถค์ ์„ย **์„ธ๊ณ„์„ ** ํ•ด๋‹น ์ž…์ž์˜ ์„ธ๊ณ„์„ ์€ ๊ณง ํ•ด๋‹น ์ž…์ž์˜ ์‹œ๊ฐ„์ถ• ๊ณต๊ฐ„์ถ•์€ ๋น›์˜ ์„ธ๊ณ„์„ ๊ณผ ๋Œ€์นญ์ด ๋จ
fa8bb3f4ec0f407cb5cc6a1032d4e8c5
Nucleus
Physics Histories
Mar 7, 2020
Alan Jo
Alan Jo
Aug 17, 2021
### Gallary |Title| |:-:| |[์ดํœ˜์†Œ](https://texonom.com/cbe13428e73940a3b585a089c934e728)|
708a480d28cd496bafb0bae3d6f5c462
์ดํœ˜์†Œ
Gallary
Mar 7, 2020
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์ž๋ฐœ์ ์œผ๋กœ ๋Œ€์นญ์„ฑ์ด ๋ถ€์„œ์ง„ ๊ฒŒ์ด์ง€ ์ด๋ก ์˜ ์žฌ๊ทœ๊ฒฉํ™”
cbe13428e73940a3b585a089c934e728
Isotrope
Physics Terms
Jul 21, 2020
Alan Jo
Alan Jo
May 30, 2022
๋“ฑ๋ฐฉ์„ฑ ๋ฌผ์ฒด๋ฅผ ๊ด€์ฐฐํ•˜๋Š” ๋ฐฉํ–ฅ์ด ๋‹ฌ๋ผ์ ธ๋„ ์„ฑ์งˆ์ด ๋ณ€ํ•˜์ง€ ์•Š๋Š” ๊ฒƒ ๊ธฐ์ฒด๋‚œ ์•ก์ฒด ๋“ฑ ๋น„์ •์งˆ ๊ณ ์ฒด๋Š” ๋“ฑ๋ฐฉ์„ฑ์„ ๋‚˜ํƒ€๋‚ด๊ณ  ํƒ„์„ฑ์ฒด๋‚˜ ์†Œ์„ฑ์ฒด๋Š” ๋ณ€ํ˜•์— ๋Œ€ํ•ด ๋“ฑ๋ฐฉ์„ฑ์„ ๊ฐ–๋Š”๋‹ค๊ณ  ๊ฐ€์ •ํ•˜๊ณ  ์—ฐ๊ตฌํ•œ๋‹ค ์—ด์„ ์ผ๋ถ€์— ๊ฐ€ํ•˜๊ฑฐ๋‚˜ ๋ณ€ํ˜•์„ ์ฃผ๋Š” ๊ฒƒ์„ ๋“ฑ๋ฐฉ์„ฑ์ด ๊นจ์ง„ ์ƒํ™ฉ์ด๋ผ๊ณ  ํ•œ๋‹ค ๊ธฐ์ฒด๋‚˜ ๋ณดํ†ต์˜ ์•ก์ฒด ๋ฐ ๋น„์ •์งˆ์ธ ๊ณ ์ฒด๋Š” ๋“ฑ๋ฐฉ์„ฑ์„ ๋‚˜ํƒ€๋‚ธ๋‹ค > [๋“ฑ๋ฐฉ์„ฑ](https://terms.naver.com/entry.nhn?docId=1085745&cid=40942&categoryId=32227)
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