mirror of
https://github.com/danbulant/notes
synced 2026-05-19 04:18:49 +00:00
vault backup: 2023-09-21 14:23:39
This commit is contained in:
Daniel Bulant
parent
8a7691d7eb
commit
1eb25d5944
5 changed files with 333 additions and 6 deletions
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@ -13,7 +13,7 @@
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@ -1346,7 +1346,7 @@
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@ -1 +1 @@
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2
notes/.obsidian/workspace.json
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2
notes/.obsidian/workspace.json
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@ -270,9 +270,9 @@
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"mat/Funkce/Goniometrické funkce.md",
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"data/Uplny odraz svetla 2023-09-21 12.58.19.excalidraw.md",
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"fyz/Svetlo/Odraz světla.md",
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"mat/Funkce/Vlastnosti funkcí.md",
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@ -8,6 +8,14 @@ tags: [excalidraw]
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beta ^734WcwHE
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120 ^hv6MdNCY
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%%
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@ -119,7 +436,7 @@ tags: [excalidraw]
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@ -94,4 +94,14 @@ $x_2=15cm$
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Určete úhel dopadu světla na rozhraní vody ($n_v = 1.33$) a skla ($n_s = 1,5$), svírá-li odražený paprsek s paprskem lomeným úhel $120\degree$.
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![[Odraz světla 2023-09-21 14.11.58.excalidraw]]
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![[Odraz světla 2023-09-21 14.11.58.excalidraw]]
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$\frac{\sin\alpha}{\sin60\degree\cos\alpha-\cos60\degree\sin\alpha}=\frac{n_2}{n_1}$
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$\frac{n_1}{n_2}=\frac{\sin60\degree\cos\alpha-\cos60\degree\sin\alpha}{\sin\alpha}$
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$=\sin60\degree\frac{\cos\alpha}{\sin\alpha}-\cos60\degree$
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$\frac{\frac{n_1}{n_2}+\cos60\degree}{\sin60\degree}=\frac{\cos\alpha}{\sin\alpha}$
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$\frac{\sin\alpha}{\cos\alpha}=\tg\alpha=\frac{\sin60\degree}{\frac{n_1}{n_2}+\cos60\degree}=0.62$
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$\frac{\sin\alpha}{\sin(60\degree-\alpha)}=\frac{n_2}{n_1}$
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$\alpha\dot=32\degree$
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||||
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|
|
|||
Loading…
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